Limiting structure and pin shaft

Abstract

The utility model relates to the technical field of pin shafts, in particular to a limit structure and a pin shaft, which comprise a limit inserting strip, the limit inserting strip is inserted in a preformed hole, the preformed hole is arranged on the surface of the pin shaft, a rubber ring is sleeved and fixed on a rod body of the limit inserting strip, a clamping groove is arranged on the rod body of the limit inserting strip, one end of the preformed hole is inserted with a limit inserting block, and the other end of the preformed hole is provided with a limit groove. After the limiting insertion strips are inserted into the reserved holes, the limiting insertion blocks are inserted into the clamping grooves; the limiting structure and the pin shaft have the beneficial effects that the limiting structure and the pin shaft are provided; through cooperation of the limiting insertion strip and the preformed hole and locking of the limiting insertion block and the clamping groove, stable limiting of the pin shaft is achieved, the problem that the pin shaft loosens or falls off is effectively solved, and the stability and safety of equipment are improved; when the pin shaft needs to be mounted or dismounted, the limiting insertion strip and the limiting insertion block can be controlled only through simple operation, complex tools or steps are not needed, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of pin shafts, in particular to a limiting structure and a pin shaft. Background Art

[0002] In modern industrial production and mechanical manufacturing, pins are widely used in various mechanical equipment as an important connection and transmission element. The main function of a pin is to achieve the connection, fixation and transmission between two or more parts through its shape and size design. However, in complex mechanical systems, the connection and fixation of pins often face many challenges.

[0003] In the prior art, since mechanical equipment may generate vibration, impact and other forces during operation, these forces may affect the connection stability of the pin shaft, causing the pin shaft to loosen, fall off or be damaged. This will not only affect the normal operation of the equipment, but also may cause safety accidents.

[0004] Therefore, a limiting structure and a pin are needed to solve the problem of poor connection stability of the existing pins and to achieve a secure installation of the pins. Utility Model Content

[0005] The purpose of the utility model is to provide a limiting structure and a pin shaft to solve the problem of poor connection stability of the existing pin shaft proposed in the above background technology; and to achieve a firm installation of the pin shaft.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a limiting structure, including a limiting insert, the limiting insert is inserted in a reserved hole, the reserved hole is arranged on the surface of the pin shaft, a rubber ring is sleeved and fixed on the rod body of the limiting insert, a card slot is arranged on the rod body of the limiting insert, a limiting insert block is inserted into one end of the reserved hole, and after the limiting insert is inserted into the reserved hole, the limiting insert block is inserted in the card slot.

[0007] Preferably, both ends of the limiting insert are provided with guide slopes, and the rod diameter of the limiting insert is equal to the aperture of the reserved hole.

[0008] Preferably, an embedding groove is provided on the surface of the limiting insert, the embedding groove is an annular groove, two embedding grooves are provided, the spacing between the two embedding grooves is equal to the rod diameter of the pin shaft, the rubber ring is fixed in the embedding groove, and the outer diameter of the rubber ring is larger than the outer diameter of the limiting insert.

[0009] Preferably, the slot is an annular slot, and the height of the slot is equal to the thickness of the limiting plug.

[0010] Preferably, a mounting groove is provided at one end of the pin shaft, a through hole is provided on the surface of the mounting groove, the through hole is connected to the reserved hole, the height of the mounting groove is greater than the height of the through hole, and the limiting plug passes through the through hole and is inserted into the slot.

[0011] Preferably, a notch is formed at one end of the limiting plug away from the reserved hole, an elastic band is fixed at the center of the notch, both ends of the elastic band are fixed on the surface of the mounting groove, and the two ends of the elastic band are respectively distributed on both sides of the through hole.

[0012] Preferably, a pull rod is fixed between two parallel side walls of the notch.

[0013] A pin shaft comprises the above-mentioned limiting structure.

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

[0015] The limiting structure and pin shaft proposed in the utility model realize stable limiting of the pin shaft through the cooperation of the limiting insert strip and the reserved hole, and the locking of the limiting insert block and the card slot, effectively avoiding the problem of loosening or falling off of the pin shaft, and improving the stability and safety of the equipment; when the pin shaft needs to be installed or removed, the limiting insert strip and the limiting insert block can be controlled through simple operations, without complicated tools or steps, which greatly improves work efficiency; further solves the problem of poor connection stability of the existing pin shaft; and can realize the firm installation of the pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a side view of the structure of the utility model;

[0018] Figure 3 for Figure 2 Structural cross-section at AA in the middle;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the limit insert of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the limit plug block of the utility model.

[0023] In the figure: a limit insert strip 1, an embedding groove 2, a rubber ring 3, a clamping groove 4, a mounting groove 5, a through hole 6, a limit insert block 7, a missing groove 8, an elastic band 9, a pull rod 10, a pin shaft 11, and a reserved hole 12. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.

[0025] Embodiment 1

[0026] See also Figure 1-Figure 3 The utility model provides a technical solution: a limiting structure, including a limiting insert 1, the limiting insert 1 is inserted in a reserved hole 12, the reserved hole 12 is arranged on the surface of a pin shaft 11, a rubber ring 3 is sleeved and fixed on the rod body of the limiting insert 1, a card slot 4 is arranged on the rod body of the limiting insert 1, a limiting insert block 7 is inserted into one end of the reserved hole 12, and after the limiting insert 1 is inserted into the reserved hole 12, the limiting insert block 7 is inserted in the card slot 4.

[0027] Embodiment 2

[0028] See attached Figure 4 and Figure 6 As shown, on the basis of Example 1, in order to realize the anti-slip pre-limitation of the limiting insert 1 when inserted into the reserved hole 12, both ends of the limiting insert 1 are provided with guide slopes, the rod diameter of the limiting insert 1 is equal to the aperture of the reserved hole 12, and the surface of the limiting insert 1 is provided with an embedding groove 2, the embedding groove 2 is an annular groove, and there are two embedding grooves 2, the spacing between the two embedding grooves 2 is equal to the rod diameter of the pin shaft 11, the rubber ring 3 is sleeved and fixed in the embedding groove 2, and the outer diameter of the rubber ring 3 is larger than the outer diameter of the limiting insert 1.

[0029] When inserting the limiting insert strip 1 into the reserved hole 12, it is necessary to pull out the limiting insert block 7 to prevent the limiting insert block 7 from being inserted into the reserved hole 12 and blocking the pushing in of the limiting insert strip 1. The predetermined position after the limiting insert strip 1 is inserted into the reserved hole 12 is that the limiting insert strip 1 passes through the reserved hole 12, and the two rubber rings 3 on the rod body of the limiting insert strip 1 are respectively located at the outside of the two ends of the reserved hole 12, that is, the rubber ring 3 blocks the outside of the reserved hole 12 to prevent the limiting insert strip 1 from bumping and jumping.

[0030] Embodiment 3

[0031] See attached Figure 5 and Figure 7As shown, on the basis of Example 2, in order to achieve anti-slip reinforcement after the limiting insert strip 1 is inserted into the reserved hole 12, the slot 4 is an annular slot, and the height of the slot 4 is equal to the thickness of the limiting insert block 7; a mounting slot 5 is provided at one end of the pin shaft 11, and a through hole 6 is provided on the surface of the mounting slot 5, the through hole 6 is connected to the reserved hole 12, the height of the mounting slot 5 is greater than the height of the through hole 6, and the limiting insert block 7 is inserted into the slot 4 after passing through the through hole 6; a notch 8 is provided at the end of the limiting insert block 7 away from the reserved hole 12, and an elastic band 9 is fixed at the center of the notch 8, and both ends of the elastic band 9 are fixed on the surface of the mounting slot 5, and the two ends of the elastic band 9 are respectively distributed on both sides of the through hole 6; a pull rod 10 is fixed between two parallel side walls of the notch 8.

[0032] The reason for installing a limit block 7 at the end of the pin shaft 11 is to better limit the limit strip 1, that is, after the limit strip 1 is inserted into the reserved hole 12, the elastic band 9 is in the initial state, and one end of the limit block 7 is inserted into the slot 4. In this way, even if the limit strip 1 is pulled out, the limit strip 1 will not be pulled out of the reserved hole 12. When the limit strip 1 needs to be removed from the reserved hole 12, the pull rod 10 is pinched by hand to pull the limit block 7, and the limit block 7 pulls the elastic band 9 to produce elastic deformation. After one end of the limit block 7 is pulled out from the slot 4, the limit strip 1 can be pulled out of the reserved hole 12.

[0033] Embodiment 4

[0034] On the basis of the third embodiment, a pin shaft is proposed, including a limiting structure.

[0035] When in use, when inserting the limit insert strip 1 into the reserved hole 12, it is necessary to pull out the limit insert block 7 to prevent the limit insert block 7 from being inserted into the reserved hole 12 to block the push-in of the limit insert strip 1. The predetermined position after the limit insert strip 1 is inserted into the reserved hole 12 is that the limit insert strip 1 passes through the reserved hole 12, and the two rubber rings 3 on the rod body of the limit insert strip 1 are respectively located at the outer sides of the two ends of the reserved hole 12, that is, the rubber ring 3 blocks the outer side of the reserved hole 12 to prevent the limit insert strip 1 from bumping and jumping; the limit insert block 7 is installed at the end of the pin shaft 11 in order to better The limit strip 1 is limited, that is, after the limit strip 1 is inserted into the reserved hole 12, the elastic band 9 is in the initial state, and one end of the limit block 7 is inserted into the slot 4. In this way, even if the limit strip 1 is pulled out, the limit strip 1 will not be pulled out of the reserved hole 12. When the limit strip 1 needs to be removed from the reserved hole 12, the limit block 7 is pulled by hand by pinching the pull rod 10. The limit block 7 pulls the elastic band 9 to produce elastic deformation, and after one end of the limit block 7 is pulled out from the slot 4, the limit strip 1 can be pulled out of the reserved hole 12.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limiting structure, comprising a limiting insert (1), the limiting insert (1) being inserted into a reserved hole (12), the reserved hole (12) being provided on the surface of a pin (11), characterized in that: A rubber ring (3) is sleeved and fixed on the rod body of the limit insert (1), a clamping groove (4) is provided on the rod body of the limit insert (1), one end of the reserved hole (12) is plugged with a limit insert block (7), and after the limit insert (1) is inserted into the reserved hole (12), the limit insert block (7) is plugged into the clamping groove (4).

2. A limiting structure according to claim 1, characterized in that: Both ends of the limiting insert (1) are provided with introduction slopes, and the rod diameter of the limiting insert (1) is equal to the hole diameter of the reserved hole (12).

3. A limiting structure according to claim 1, characterized in that: The surface of the limiting insert strip (1) is provided with an embedding groove (2), the embedding groove (2) is an annular groove, two embedding grooves (2) are provided, the spacing between the two embedding grooves (2) is equal to the rod diameter of the pin shaft (11), the rubber ring (3) is sleeved and fixed in the embedding groove (2), and the outer diameter of the rubber ring (3) is greater than the outer diameter of the limiting insert strip (1).

4. A limiting structure according to claim 1, characterized in that: The clamping groove (4) is an annular groove, and the height of the clamping groove (4) is equal to the thickness of the limiting plug (7).

5. A limiting structure according to claim 1, characterized in that: One end of the pin shaft (11) is provided with a mounting groove (5), a surface of the mounting groove (5) is provided with a through hole (6), the through hole (6) is communicated with the reserved hole (12), the height of the mounting groove (5) is greater than the height of the through hole (6), and the limiting plug (7) penetrates the through hole (6) and is inserted into the card slot (4).

6. A limiting structure according to claim 5, characterized in that: A notch (8) is formed at one end of the limiting plug (7) away from the reserved hole (12), an elastic band (9) is fixed at the center of the notch (8), both ends of the elastic band (9) are fixed on the surface of the mounting groove (5), and the two ends of the elastic band (9) are respectively distributed on both sides of the through hole (6).

7. A limiting structure according to claim 6, characterized in that: A pull rod (10) is fixed between two parallel side walls of the notch (8).

8. A pin, characterized in that: It includes the limiting structure described in any one of claims 1 to 7.

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