Locking structure of guide shaft

Abstract

The utility model discloses a locking structure of a guide shaft, which belongs to the technical field of mechanical parts and comprises a shaft support, a support cover and a guide shaft, the support cover is detachably connected onto the shaft support, the guide shaft is detachably connected in the shaft support and the support cover, a limit opening is arranged on the circumferential surface of the guide shaft, a limit bulge is fixedly connected in the support cover, and the limit bulge is fixedly connected in the support cover. The limiting bulge is matched with the limiting opening; according to the locking structure, the shaft support and the support cover are assembled to lock and fix the guide shaft, the limiting protrusion in the support cover is inserted into the limiting opening in the surface of the guide shaft, so that the guide shaft is limited, and the locking structure can bear vertical bearing, transverse bearing, axial force and radial force.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts, and more specifically, to a locking structure of a guide shaft. Background Art

[0002] At present, guide shafts are widely used in mechanical equipment, usually used in conjunction with shaft supports. They are installed by locking the shaft supports to play a certain load-bearing role.

[0003] Authorization publication number "CN215058967U" discloses a guide shaft support comprising a base and a snap-fit ​​portion extending from the base, with a notch formed on the side of the base away from the snap-fit ​​portion. The notch formed at the bottom of the guide shaft support reduces the contact area of ​​the base, thereby lowering the parallelism requirements for components mating with the base. Furthermore, when the base is mated with other parts, the area where the notch is located does not need to be mated and is therefore unaffected by the overall flatness of the other parts. This notch facilitates the securement of the guide shaft support and reduces the risk of loosening.

[0004] In the above patent, the shaft support is deformed by tightening the bolts to clamp the guide shaft. The locking force of this locking method (the axial bearing capacity of the guide shaft) is limited and is affected by the degree of deformation of the support and the tightening torque of the bolts. Moreover, since the guide shaft is usually a smooth shaft, the shaft hole of the shaft support is a smooth hole without a positioning structure. If the torque is large, the guide shaft may rotate, affecting the operation of the equipment. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a locking structure for a guide shaft, aiming to solve the problem in the prior art that the shaft support is deformed by tightening the bolts to clamp the guide shaft. The locking force of this locking method (the axial bearing capacity of the guide shaft) is limited and is affected by the degree of deformation of the support and the tightening torque of the bolts. Moreover, since the guide shaft is usually a smooth shaft and the shaft hole of the shaft support is a smooth hole without a positioning structure, if the torque is large, the guide shaft may rotate, affecting the operation of the equipment.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the present invention adopts the following technical solutions:

[0009] A locking structure for a guide shaft comprises a shaft support, a support cover and a guide shaft, wherein the support cover is detachably connected to the shaft support, and the guide shaft is detachably connected to the shaft support and the support cover, a limiting opening is provided on the circumferential surface of the guide shaft, a limiting protrusion is fixedly connected in the support cover, and the limiting protrusion matches the limiting opening.

[0010] As a preferred solution of the present invention, two bolts are threadedly connected between the shaft support and the support cover, and the two bolts are symmetrically distributed.

[0011] As a preferred solution of the present invention, the bottom ends of the shaft support and the support cover are fixedly connected with a flange, and a plurality of connection holes are opened on the flange.

[0012] As a preferred solution of the present invention, an axial hole is provided between the axial support and the support cover, and the guide shaft is located in the axial hole.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In this solution, the shaft support and the support cover cooperate to form a shaft hole, which serves as a radial support. The axial bearing capacity of the guide shaft is not affected by the deformation of the bolts and the support, and the locking force is multiplied.

[0016] (2) In this solution, the limiting protrusion in the support cover matches the limiting opening on the surface of the guide shaft, which plays a positioning role. The plane of the limiting protrusion contacts the plane of the limiting opening, which limits the rotation of the guide shaft and can withstand a large torque. After the shaft support and the support cover are assembled and locked, the guide shaft cannot be pulled out of the shaft support.

[0017] (3) In this solution, the shaft support and the support cover are assembled to lock and fix the guide shaft, and the limiting protrusion in the support cover is inserted into the limiting opening on the surface of the guide shaft, thereby limiting the guide shaft. The locking structure can bear vertical loads and horizontal loads, and can withstand axial forces and radial forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of the utility model;

[0019] Figure 2 This is an exploded view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 This is a structural diagram of the central axis support and support cover of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Shaft support; 2. Support cover; 3. Guide shaft; 4. Limit opening; 5. Limit protrusion; 6. Bolt; 7. Flange; 8. Connecting hole. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Example:

[0028] See also Figure 1-4 A locking structure for a guide shaft includes a shaft support 1, a support cover 2 and a guide shaft 3. The support cover 2 is detachably connected to the shaft support 1. The guide shaft 3 is detachably connected to the shaft support 1 and the support cover 2. A limiting opening 4 is provided on the circumferential surface of the guide shaft 3. A limiting protrusion 5 is fixedly connected to the support cover 2, and the limiting protrusion 5 matches the limiting opening 4.

[0029] In this embodiment, one end of the guide shaft 3 is inserted into the shaft support 1 with the limit opening 4 facing outward, and then the support cover 2 is installed on the shaft support 1 so that the limit protrusion 5 is snapped into the limit opening 4 to lock and fix the guide shaft 3. By installing the shaft support 1 and the support cover 2 on the equipment, the end of the guide shaft 3 away from the shaft support 1 and the support cover 2 is used to carry various parts and equipment.

[0030] Specifically, two bolts 6 are threadedly connected between the shaft support 1 and the support cover 2, and the two bolts 6 are symmetrically distributed.

[0031] In this embodiment, two bolts 6 are used to connect and fix the shaft support 1 and the support cover 2, so that the shaft support 1 and the support cover 2 are assembled to lock and fix the guide shaft 3.

[0032] Specifically, the bottom ends of the shaft support 1 and the support cover 2 are fixedly connected with a flange 7 , and a plurality of connection holes 8 are opened on the flange 7 .

[0033] In this embodiment, the shaft support 1 and the support cover 2 are assembled to form a flange 7 at the bottom, and the flange 7 is fixed to the equipment through a plurality of connection holes 8 and screws.

[0034] Specifically, an axial hole is defined between the axial support 1 and the support cover 2 , and the guide shaft 3 is located in the axial hole.

[0035] In this embodiment, the shaft support 1 and the support cover 2 are assembled to form a circular shaft hole, and one end of the guide shaft 3 is located and fixed in the circular shaft hole.

[0036] Working principle: Insert one end of the guide shaft 3 into the shaft support 1 with the limit opening 4 facing outward, and then install the support cover 2 on the shaft support 1 through two bolts 6, so that the limit protrusion 5 is snapped into the limit opening 4 to lock and fix the guide shaft 3. By installing the flange 7 at the bottom end of the shaft support 1 and the support cover 2 on the equipment, the end of the guide shaft 3 away from the shaft support 1 and the support cover 2 is used to carry various parts and equipment.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking structure for a guide shaft, comprising a shaft support (1), a support cover (2) and a guide shaft (3), characterized in that: The support cover (2) is detachably connected to the shaft support (1), the guide shaft (3) is detachably connected to the shaft support (1) and the support cover (2), a limiting opening (4) is provided on the circumferential surface of the guide shaft (3), a limiting protrusion (5) is fixedly connected to the support cover (2), and the limiting protrusion (5) matches the limiting opening (4).

2. The locking structure of a guide shaft according to claim 1, characterized in that: Two bolts (6) are threadedly connected between the shaft support (1) and the support cover (2), and the two bolts (6) are symmetrically distributed.

3. The locking structure of a guide shaft according to claim 2, characterized in that: The bottom ends of the shaft support (1) and the support cover (2) are fixedly connected with a flange (7), and a plurality of connection holes (8) are provided on the flange (7).

4. The locking structure of a guide shaft according to claim 3, characterized in that: An axial hole is provided between the axial support (1) and the support cover (2), and the guide shaft (3) is located in the axial hole.

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