Structure for preventing positioning pin from being broken in clutch device

Abstract

The utility model relates to a structure for preventing a positioning pin from being broken in a clutch device, and belongs to the technical field of clutches. Comprising separation outer teeth, a rotating shaft and a positioning pin, one end of the rotating shaft is connected with the interior of the separation outer teeth, a key groove matched with a flat key is formed between the rotating shaft and the separation outer teeth, the flat key is installed in the key groove, a pin hole is formed in the rotating shaft, and the positioning pin penetrates through the pin hole. According to the utility model, the key slot is additionally arranged on the matching surface between the rotating shaft and the separation outer tooth, and the flat key is embedded into the key slot. By means of the design, the positioning pin does not bear shear force any more, so that the positioning pin is prevented from being broken off, the situation that the positioning pin is broken off due to the shear force in the operation process is avoided, and damage to other parts in the gearbox is reduced.

Description

Technical Field

[0001] The utility model relates to a structure for preventing a positioning pin from breaking in a clutch device, belonging to the technical field of clutches. Background Art

[0002] In existing traditional clutch devices, locating pins are commonly used to fix the relative position between the separation outer teeth and the rotating shaft. The locating pins usually penetrate the rotating shaft to keep meshing with the separation outer teeth. However, due to the shear force on the locating pins, there is a risk that they are easily broken. Once the locating pins break, the debris will fall into the gearbox, causing serious damage to the gears, bearings and other components, reducing the efficiency and accuracy of the equipment, and even causing the entire device to fail, resulting in downtime and economic losses.

[0003] Existing methods to prevent the locating pin from breaking mainly focus on improving the material, such as using higher-strength steel or alloy materials. However, these methods are costly and cannot fundamentally solve the problem of the locating pin being subjected to shear force. In addition, the shear strength of the locating pin is still limited, and there is still a risk of breaking when subjected to large shear forces. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model adds a keyway on the mating surface between the rotating shaft and the separation external tooth, and a flat key is embedded in the keyway. This design makes the positioning pin no longer bear the shear force, thereby preventing it from breaking, so as to avoid the positioning pin being broken by the shear force during operation, thereby reducing damage to other components in the gear box.

[0005] The technical solution adopted by the utility model is a structure for preventing a positioning pin from breaking in a clutch device, comprising a separation outer tooth, a rotating shaft and a positioning pin, one end of the rotating shaft is connected to the inside of the separation outer tooth, a keyway for cooperating with a flat key is provided between the rotating shaft and the separation outer tooth, the flat key is installed in the keyway, a pin hole is provided on the rotating shaft, and the positioning pin passes through the pin hole.

[0006] Furthermore, the other end of the rotating shaft is connected to the operating handle through a pull rod.

[0007] Further, the separation outer teeth are engaged with or separated from the inner teeth.

[0008] Furthermore, the pull rod is detachably connected to the operating handle.

[0009] Furthermore, the pull rod is provided with a connecting hole, and the operating handle is provided with a screw hole, and the operating handle and the pull rod are connected and fixed after a fastener penetrates the screw hole and the connecting hole.

[0010] Furthermore, the fastener is a bolt assembly.

[0011] The utility model discloses a structure for preventing a positioning pin from breaking in a clutch device. The beneficial effect is that compared with the prior art, by providing a keyway on the mating surface between the rotating shaft and the separating external teeth, the flat key placed in the keyway prevents the positioning pin from breaking due to shear force, reduces the risk of the positioning pin breaking, and improves the stability and reliability of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 The following shows a schematic cross-sectional view of the structure of Embodiment 1 of the present utility model;

[0014] Figure 2 The following shows Figure 1 a schematic cross-sectional view of the structure of the separating external teeth, the rotating shaft and the flat key in

[0015] As shown in the figure: 1, separating external teeth; 2, rotating shaft; 3, positioning pin; 4, keyway; 5, flat key; 6, pull rod; 7, operating handle; 8, internal teeth; 9, fastener. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. The description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0017] To further understand the content of the present utility model, the following further elaborates on this technical solution in combination with specific embodiments.

[0018] Embodiment 1: As Figures 1-2As shown in the figure, this embodiment provides an anti-positioning pin breakage structure in a clutch device, which includes a separating external gear 1, a rotating shaft 2, and a positioning pin 3. One end of the rotating shaft 2 is connected to the inside of the separating external gear 1. A keyway 4 for accommodating a flat key 5 is provided on the mating surface between the rotating shaft 2 and the separating external gear 1. The flat key 5 is installed in the keyway 4. A pin hole is provided on the rotating shaft 2, and the positioning pin 3 passes through the pin hole. When the separating external gear 1 meshes with the internal gear 8, the positioning pin 3 is in contact with the separating external gear 1. The other end of the rotating shaft 2 is connected to an operating handle 7 through a pull rod 6, and the other end of the pull rod 6 is detachably connected to the operating handle 7. Specifically, the pull rod 6 is provided with a connection hole, and the operating handle 7 is provided with a threaded hole. The fastener 9 passes through the threaded hole and the connection hole in sequence to connect and fix the pull rod 6 and the operating handle 7. In this embodiment, the fastener 9 is a bolt assembly, that is, a bolt passes through the threaded hole and the connection hole and is tightened by screwing a nut.

[0019] As Figure 1 shown, the separating external gear 1 meshes with the internal gear 8. When it is necessary to separate the separating external gear 1 from the internal gear 8, the operating handle 7 is pulled downward. The operating handle 7 drives the rotating shaft 2 and the separating external gear 1 to move downward through the pull rod 6, so that the separating external gear 1 is separated from the internal gear 8, and the internal gear 8 rotates while the separating external gear 1 does not rotate.

[0020] As Figure 2 shown, by providing a keyway 4 on the mating surface between the rotating shaft 2 and the separating external gear 1, and placing a flat key 5 in the keyway 4, the positioning pin 3 is no longer subjected to a shearing force, avoiding the problem of the positioning pin 3 breaking due to the shearing force, and further avoiding damage to other components.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A structure for preventing a positioning pin from breaking in a clutch device, characterized in that: The invention comprises a separation outer tooth (1), a rotating shaft (2) and a positioning pin (3); one end of the rotating shaft (2) is connected to the inside of the separation outer tooth (1); a keyway (4) for cooperating with a flat key (5) is provided between the rotating shaft (2) and the separation outer tooth (1); the flat key (5) is installed in the keyway (4); a pin hole is provided on the rotating shaft (2); and the positioning pin (3) passes through the pin hole.

2. The anti-breakage structure of the positioning pin in the clutch device according to claim 1, characterized in that: The other end of the rotating shaft (2) is connected to an operating handle (7) via a pull rod (6).

3. A structure for preventing the positioning pin from breaking in a clutch device according to claim 1 or 2, characterized in that: The external teeth (1) are separated from the internal teeth (8) to engage or separate.

4. The anti-breakage structure of the positioning pin in the clutch device according to claim 2, characterized in that: The pull rod (6) is detachably connected to the operating handle (7).

5. The anti-breakage structure of the positioning pin in the clutch device according to claim 4, characterized in that: The pull rod (6) is provided with a connection hole, and the operating handle (7) is provided with a screw hole. The operating handle (7) and the pull rod (6) are connected and fixed after a fastener (9) penetrates the screw hole and the connection hole.

6. The anti-breakage structure of the positioning pin in the clutch device according to claim 5, characterized in that: The fastener (9) is a bolt assembly.

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