Belt pulley structure capable of preventing belt from being separated

Abstract

The utility model discloses a belt pulley structure for preventing belt separation, which relates to the technical field of belt pulleys and comprises a belt pulley, a rotating ring is rotatably connected onto the belt pulley, two fixed shafts are fixedly mounted on the rotating ring, swing plates are rotatably sleeved on the two fixed shafts, and the swing plates are fixedly mounted on the rotating ring. Inner sliding plates are slidably connected to the interiors of the two swing plates, extrusion wheels are rotatably connected to the two inner sliding plates, pressing rods are slidably connected to the interiors of the inner sliding plates, and connecting plates are fixedly mounted at the ends, extending into the inner sliding plates, of the pressing rods. And the belt in the belt pulley is blocked, so that the belt is prevented from being separated from the belt pulley, the limiting effect on the belt is improved, and the use safety of the belt pulley is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a pulley structure for preventing a belt from falling off. Background Art

[0002] Pulleys are hub parts, which are generally relatively large in size. The manufacturing process is generally based on casting and forging (larger designs are generally cast, and the material is generally cast iron (better casting performance), and cast steel is rarely used (steel has poor casting performance); smaller ones can be designed for forging, and the material is steel). Pulleys are mainly used in situations where power is transmitted over long distances. It is worth noting that gasoline must be used for the last cleaning before assembling the pulley to ensure that all components are clean and dry, to ensure that the mating surfaces are tightly fitted and free of oil, and to ensure that there is sufficient friction.

[0003] When transmitting, a pulley is needed. However, when using some existing pulleys, the belt is usually directly installed on the pulley. However, during long-term use, due to the lack of restriction on the belt, it is easy to cause the belt to separate from the pulley, thereby causing damage to the device.

[0004] In view of the above problem, a pulley structure for preventing the belt from coming off is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a pulley structure for preventing a belt from falling off, which can solve the problems of the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulley structure for preventing a belt from detaching, comprising a pulley, a rotating ring being rotatably connected to the pulley, two fixed shafts being fixedly mounted on the rotating ring, swing plates being rotatably sleeved on the two fixed shafts, inner slides being slidably connected to the interiors of the two swing plates, extrusion wheels being rotatably connected to the two inner slides, a pressing rod being slidably connected to the interiors of the inner slides, a connecting plate being fixedly mounted on one end of the pressing rod extending to the interior of the inner slide, and the connecting plate being slidably connected to the interior of the inner slide.

[0007] Preferably, a limiting rod is fixedly installed inside the inner slide plate, and the surface of the limiting rod is slidably connected to the inside of the connecting plate.

[0008] Preferably, an elastic spring is movably sleeved on the limiting rod, one end of the elastic spring close to the connecting plate is fixedly connected to the connecting plate, and one end of the elastic spring away from the connecting plate is fixedly connected to the inside of the inner slide plate.

[0009] Preferably, a clamping rod is fixedly mounted on one side of the connecting plate, the clamping rod slides inside the inner slide plate and extends to the outside of the inner slide plate, a plurality of insertion holes are provided inside the swing plate, and the clamping rod is matched with the insertion holes.

[0010] Preferably, one end of the clamping rod is semicircular.

[0011] Preferably, the interior of the swing plate is rotatably connected with a rotating shaft, the rotating shaft rotatably passes through the swing plate and extends to the outside of the swing plate, and a handle is fixedly sleeved on one end of the rotating shaft extending to the outside of the swing plate.

[0012] Preferably, a pawl is fixedly sleeved on the rotating shaft, and a ratchet is fixedly sleeved on one end of the fixed shaft located inside the swing plate, and the pawl is meshed with the ratchet.

[0013] Preferably, a torsion spring is movably sleeved on the rotating shaft, one end of the torsion spring close to the pawl is fixedly connected to the pawl, and one end of the torsion spring away from the pawl is fixedly connected to the inside of the swing plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The pulley structure for preventing the belt from detaching is convenient for the extrusion wheel to contact the pulley through the arrangement of the swing plate, the inner slide plate and the extrusion wheel, thereby blocking the belt inside the pulley, thereby preventing the belt from detaching from the pulley, thereby improving the restraining effect on the belt and improving the safety of the pulley.

[0016] (2) The pulley structure that prevents the belt from being disengaged pulls the inner slide plate to slide inside the swing plate. After the length is adjusted, the pressing rod is no longer pressed, so that the clamping rod and the connecting plate are reset by the elastic force of the elastic spring, and the clamping rod is inserted into the inside of the insertion hole, thereby realizing the adjustment of the length of the inner slide plate and the swing plate, which is convenient for adjustment according to the diameter of the pulley, thereby facilitating the expansion of the use range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of a pulley structure for preventing a belt from falling off according to the utility model;

[0019] Figure 2 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0020] Figure 3 This is a schematic diagram of the interior of the inner slide plate of the utility model;

[0021] Figure 4It is the internal schematic diagram of the swing plate of the utility model.

[0022] Figure numerals: 1. pulley; 2. rotating ring; 3. swing plate; 4. fixed shaft; 5. handle; 6. rotating shaft; 7. extrusion wheel; 8. inner slide plate; 9. pressing rod; 10. connecting plate; 11. limiting rod; 12. elastic spring; 13. clamping rod; 14. socket; 15. ratchet; 16. pawl; 17. torsion spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0025] See also Figure 1-4 The utility model provides a technical solution: a pulley structure for preventing a belt from falling off, comprising a pulley 1, a rotating ring 2 being rotatably connected to the pulley 1, two fixed shafts 4 being fixedly installed on the rotating ring 2, swing plates 3 being rotatably sleeved on the two fixed shafts 4, inner slide plates 8 being slidably connected to the insides of the two swing plates 3, and extrusion wheels 7 being rotatably connected to the two inner slide plates 8.

[0026] By setting the swing plate 3, the inner slide plate 8 and the extrusion wheel 7, it is convenient for the extrusion wheel 7 to contact with the pulley 1, thereby blocking the belt inside the pulley 1, thereby preventing the belt from detaching from the pulley 1, thereby improving the restriction effect on the belt and improving the safety of the use of the pulley 1.

[0027] The inner slide plate 8 is slidably connected to a pressing rod 9, and a connecting plate 10 is fixedly installed on one end of the pressing rod 9 extending to the inside of the inner slide plate 8. The connecting plate 10 is slidably connected to the inside of the inner slide plate 8, and a limiting rod 11 is fixedly installed to the inside of the inner slide plate 8. The surface of the limiting rod 11 is slidably connected to the inside of the connecting plate 10, and an elastic spring 12 is movably sleeved on the limiting rod 11. The end of the elastic spring 12 close to the connecting plate 10 is fixedly connected to the connecting plate 10, and the end of the elastic spring 12 away from the connecting plate 10 is fixedly connected to the inside of the inner slide plate 8. A clamping rod 13 is fixedly installed on one side of the connecting plate 10, and the clamping rod 13 slides inside the inner slide plate 8 and extends to the outside of the inner slide plate 8. A plurality of sockets 14 are provided inside the swing plate 3, and the clamping rod 13 matches the sockets 14, and one end of the clamping rod 13 is semicircular.

[0028] The pressing rod 9 is pressed to make the connecting plate 10 slide inside the inner slide plate 8 and on the limiting rod 11, and the elastic spring 12 is squeezed, so that the clamping rod 13 moves with the connecting plate 10, and the clamping rod 13 is disengaged from the inside of the insertion hole 14, and the inner slide plate 8 is pulled to slide inside the swing plate 3. After the length is adjusted, the pressing rod 9 is no longer pressed, so that the clamping rod 13 and the connecting plate 10 are reset by the elastic force of the elastic spring 12, and the clamping rod 13 is inserted into the inside of the insertion hole 14, thereby realizing the adjustment of the length of the inner slide plate 8 and the swing plate 3, which is convenient for adjustment according to the diameter of the pulley 1, and thus it is convenient to expand the scope of use of the device.

[0029] The inside of the swing plate 3 is rotatably connected with a rotating shaft 6, which rotates through the swing plate 3 and extends to the outside of the swing plate 3. A handle 5 is fixedly sleeved on one end of the rotating shaft 6 extending to the outside of the swing plate 3, and a pawl 16 is fixedly sleeved on the rotating shaft 6. A ratchet 15 is fixedly sleeved on one end of the fixed shaft 4 located inside the swing plate 3, and the pawl 16 is engaged with the ratchet 15. A torsion spring 17 is movably sleeved on the rotating shaft 6, and one end of the torsion spring 17 close to the pawl 16 is fixedly connected to the pawl 16, and one end of the torsion spring 17 away from the pawl 16 is fixedly connected to the inside of the swing plate 3.

[0030] When adjusting the angle of the extrusion wheel 7, the handle 5 is pushed to rotate the rotating shaft 6, thereby rotating the pawl 16, and deforming the torsion spring 17, thereby disengaging the pawl 16 from the ratchet 15, releasing the fixation of the fixed shaft 4, and rotating the swing plate 3 on the fixed shaft 4, while limiting the two swing plates 3 to rotate only relative to each other, and can move back to back only after releasing the fixation of the fixed shaft 4, thereby facilitating the adjustment of the fit between the two extrusion wheels 7 and the belt, and thereby facilitating the belt to be restricted to prevent tooth disengagement.

[0031] Working principle:

[0032] The pressing rod 9 is pressed to make the connecting plate 10 slide inside the inner slide plate 8 and on the limiting rod 11, and the elastic spring 12 is squeezed, so that the clamping rod 13 moves with the connecting plate 10, and the clamping rod 13 is disengaged from the inside of the insertion hole 14, and the inner slide plate 8 is pulled to slide inside the swing plate 3. After the length is adjusted, the pressing rod 9 is no longer pressed, so that the clamping rod 13 and the connecting plate 10 are reset by the elastic force of the elastic spring 12, and the clamping rod 13 is inserted into the inside of the insertion hole 14, thereby realizing the adjustment of the length of the inner slide plate 8 and the swing plate 3.

[0033] When adjusting the angle of the extrusion wheel 7, the handle 5 is pushed to rotate the rotating shaft 6, thereby rotating the pawl 16, and deforming the torsion spring 17, thereby disengaging the pawl 16 from the ratchet 15, releasing the fixation of the fixed shaft 4, and then rotating the swing plate 3 on the fixed shaft 4, while limiting the two swing plates 3 to only rotate relative to each other. Only after releasing the fixation of the fixed shaft 4 can they move away from each other, thereby facilitating the adjustment of the fit between the two extrusion wheels 7 and the belt.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulley structure for preventing a belt from escaping, comprising a pulley (1), characterized in that: The pulley (1) is rotatably connected to a rotating ring (2), two fixed shafts (4) are fixedly mounted on the rotating ring (2), swing plates (3) are rotatably sleeved on the two fixed shafts (4), inner slide plates (8) are slidably connected to the inside of the two swing plates (3), extrusion wheels (7) are rotatably connected to the two inner slide plates (8), a pressing rod (9) is slidably connected to the inside of the inner slide plates (8), a connecting plate (10) is fixedly mounted on one end of the pressing rod (9) extending to the inside of the inner slide plate (8), and the connecting plate (10) is slidably connected to the inside of the inner slide plate (8).

2. A pulley structure for preventing a belt from disengaging according to claim 1, characterized in that: A limiting rod (11) is fixedly installed inside the inner slide plate (8), and the surface of the limiting rod (11) is slidably connected to the inside of the connecting plate (10).

3. A pulley structure for preventing a belt from disengaging according to claim 2, characterized in that: An elastic spring (12) is movably sleeved on the limiting rod (11), one end of the elastic spring (12) close to the connecting plate (10) is fixedly connected to the connecting plate (10), and one end of the elastic spring (12) away from the connecting plate (10) is fixedly connected to the inside of the inner slide plate (8).

4. A pulley structure for preventing a belt from disengaging according to claim 3, characterized in that: A clamping rod (13) is fixedly mounted on one side of the connecting plate (10). The clamping rod (13) slides inside the inner slide plate (8) and extends to the outside of the inner slide plate (8). A plurality of insertion holes (14) are provided inside the swing plate (3), and the clamping rod (13) matches the insertion holes (14).

5. A pulley structure for preventing a belt from disengaging according to claim 4, characterized in that: One end of the clamping rod (13) is semicircular.

6. A pulley structure for preventing a belt from disengaging according to claim 5, characterized in that: The interior of the swing plate (3) is rotatably connected to a rotating shaft (6), which rotates through the swing plate (3) and extends to the outside of the swing plate (3), and a handle (5) is fixedly sleeved on one end of the rotating shaft (6) extending to the outside of the swing plate (3).

7. A pulley structure for preventing a belt from disengaging according to claim 6, characterized in that: A ratchet pawl (16) is fixedly sleeved on the rotating shaft (6), and a ratchet wheel (15) is fixedly sleeved on one end of the fixed shaft (4) located inside the swing plate (3), and the ratchet pawl (16) is meshed with the ratchet wheel (15).

8. A pulley structure for preventing a belt from disengaging according to claim 7, characterized in that: A torsion spring (17) is movably sleeved on the rotating shaft (6); one end of the torsion spring (17) close to the pawl (16) is fixedly connected to the pawl (16); and one end of the torsion spring (17) away from the pawl (16) is fixedly connected to the inside of the swing plate (3).

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