Mechanical pin shaft with positioning and locking mechanism

Abstract

The invention relates to the technical field of pin shafts, in particular to a mechanical pin shaft with a positioning and locking mechanism, which comprises a pin shaft body, one end of the pin shaft body is sleeved with a positioning sleeve, one side of the positioning sleeve is rotatably connected with a blocking piece, a locking clamping block is inserted into the surface of the positioning sleeve, and the other side of the positioning sleeve is sleeved with a limiting sleeve; the limiting sleeve extrudes and pushes the locking clamping block to clamp the pin shaft body and is used for braking the positioning sleeve on a rod body of the pin shaft body; the mechanical pin shaft with the positioning and locking mechanism has the beneficial effects that by sliding the positioning sleeve and adjusting the position of the positioning sleeve on the pin shaft body, the mechanical pin shaft with the positioning and locking mechanism can be conveniently adapted to workpieces with different widths, and the universality and adaptability of the pin shaft are improved; and the positioning sleeve can be firmly fixed on the pin shaft body through the matching of the locking clamping block and the elastic band, so that the position change of the pin shaft caused by vibration or external force is effectively prevented.

Description

Technical Field

[0001] The invention relates to the field of pin shafts, in particular to a mechanical pin shaft with a positioning and locking mechanism. Background Art

[0002] In the field of mechanical connection, pins are a commonly used connector, widely used in various mechanical equipment and structures to achieve fixed or movable connections between parts. However, traditional pin connection methods often have some problems, especially in application scenarios that need to adapt to workpieces of different widths or need to withstand large swing forces.

[0003] On the one hand, traditional pins usually do not have a positioning and locking mechanism, which makes the position of the pin in the workpiece easily change due to vibration or external force, affecting the stability and reliability of the connection. On the other hand, when the workpiece needs to withstand a large swing force, the connection between the pin and the workpiece is prone to loosening or even breaking due to friction and wear, further reducing the reliability and safety of the connection.

[0004] In order to solve these problems, some mechanical pins with positioning and locking mechanisms have appeared on the market. However, these pins are often complex in structure, difficult to install and maintain, and have high costs. In addition, although some pins have positioning and locking functions, their stability and reliability still need to be improved when adapting to workpieces of different widths or bearing large swing forces. Summary of the invention

[0005] The object of the present invention is to provide a mechanical pin with a positioning and locking mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical pin shaft with a positioning and locking mechanism, comprising a pin shaft body, one end of the pin shaft body is sleeved with a positioning sleeve, one side of the positioning sleeve is rotatably connected with a blocking plate, the surface of the positioning sleeve is inserted with a locking clamp, and the other side of the positioning sleeve is sleeved with a limiting sleeve, the limiting sleeve pushes the locking clamp to clamp the pin shaft body, and is used to brake the positioning sleeve on the rod body of the pin shaft body.

[0007] Preferably, the positioning sleeve is a convex-shaped circular tube, and a rubber ring is fixed to the inner ring surface of the positioning sleeve. The rubber ring is clamped between the pin body and the positioning sleeve to generate elastic deformation.

[0008] Preferably, a limit groove is provided on one side of the pin shaft body, the limit groove is in the form of a convex circular ring, the internal rotation of the limit groove is connected with a traction swivel, the traction swivel is in the form of a convex circular ring plate, one end of the traction swivel is fixed on the surface of the baffle, and the baffle is in the form of a circular ring plate.

[0009] Preferably, a ball is embedded in the other end of the traction swivel, the ball contacts the side wall of the limiting rotation groove, a plurality of balls are provided, and the plurality of balls are distributed in a circle with the notch of the positioning sleeve as the center.

[0010] Preferably, the inner ring surface of the positioning sleeve is provided with an embedding groove, the embedding groove is a circular ring groove, the outer ring surface of the embedding groove is fixed with an elastic band, the outer ring surface of the positioning sleeve is provided with a through opening, the through opening is connected to the embedding groove, there are multiple through openings, the locking clamp is inserted in the through openings, and the locking clamp and the through openings correspond one to one.

[0011] Preferably, the thickness of the locking clamp is greater than the depth of the through opening, and an inclined surface is provided at one end of the locking clamp away from the elastic band.

[0012] Preferably, a card slot is provided at one end of the limiting sleeve, and the card slot is a circular ring groove with a circular fracture. An introduction ring is inserted into the interior of the card slot, one end of the introduction ring is fixed to the surface of the positioning sleeve, and a rubber ring is fixed on the other end of the introduction ring. The rubber ring is inserted into the card slot, and the rubber ring is a circular ring structure with a circular cross-section, and the cross-sectional diameter of the rubber ring is larger than the slot width of the card slot.

[0013] Preferably, the inner ring surface of the limiting sleeve is provided with an internal thread, and the outer ring surface of the positioning sleeve is provided with an external thread, and the internal thread and the external thread are matched and connected.

[0014] Preferably, a reserved groove is provided on the outer ring surface of the limiting sleeve, the reserved groove is a circular ring groove, and a plurality of paddles are fixed on the surface of the reserved groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The mechanical pin shaft with a positioning and locking mechanism proposed by the present invention can be easily adapted to workpieces of different widths by sliding the positioning sleeve and adjusting its position on the pin shaft body, thereby improving the versatility and adaptability of the pin shaft; the positioning sleeve can be firmly fixed on the pin shaft body through the cooperation of the locking clamp block and the elastic band, effectively preventing the position change of the pin shaft caused by vibration or external force. At the same time, the design of the baffle and the traction swivel reduces the influence of the swing of the workpiece on the installation firmness of the positioning sleeve, further improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a side view of the structure of the present invention;

[0019] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 5 This is a schematic diagram of the connection structure of the positioning sleeve and the limiting sleeve of the present invention;

[0022] Figure 6 This is a schematic diagram of the positioning sleeve structure of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the limiting sleeve of the present invention.

[0024] In the figure: pin body 1, positioning sleeve 2, rubber ring 3, embedding groove 4, through-hole 5, locking clamp 6, elastic band 7, inclined surface 8, limit sleeve 9, internal thread 10, external thread 11, reserved groove 12, paddle 13, card groove 14, guide ring 15, rubber ring 16, limit rotation groove 17, traction swivel 18, ball 19, baffle 20. DETAILED DESCRIPTION

[0025] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 The present invention provides a technical solution: a mechanical pin shaft with a positioning and locking mechanism, comprising a pin shaft body 1, one end of the pin shaft body 1 is sleeved with a positioning sleeve 2, the positioning sleeve 2 is a "convex" shaped circular tube, the inner ring surface of the positioning sleeve 2 is fixed with a rubber ring 3, the rubber ring 3 is clamped between the pin shaft body 1 and the positioning sleeve 2 to produce elastic deformation, one side of the positioning sleeve 2 is rotatably connected with a baffle 20, one side of the pin shaft body 1 is provided with a limited rotation groove 17, the limited rotation groove 17 is a "convex" shaped circular ring, the inside of the limited rotation groove 17 is rotatably connected with a traction swivel 18, the traction swivel 18 is a "convex" shaped circular ring plate, one end of the traction swivel 18 is fixed on the surface of the baffle 20, the baffle 20 is a circular ring plate, and the other end of the traction swivel 18 is embedded with a ball 19, the ball 19 contacts the side wall of the limited rotation groove 17, a plurality of balls 19 are provided, and the plurality of balls 19 are distributed in a circle with the notch of the positioning sleeve 2 as the center.

[0027] When in use, after the pin shaft body 1 passes through the pin shaft hole of the workpiece, the positioning sleeve 2 is mounted on one end of the pin shaft body 1 and braked. The positioning sleeve 2 and the end plates of the pin shaft body 1 are distributed on both sides of the workpiece. According to the width of the workpiece, the positioning sleeve 2 is pushed to slide on the pin shaft body 1 to the specified position and then braked. This makes it easy for the pin shaft body 1 to adapt to workpieces of different widths. The reason for installing the baffle 20 is that a rotating structure is added between the positioning sleeve 2 and the workpiece, that is, when the baffle 20 contacts the workpiece, after the workpiece contacts the baffle 20 during the swinging process, the baffle 20 rotates on one side of the positioning sleeve 2 through the traction swivel 18, thereby reducing the influence of the swinging of the workpiece on the installation firmness of the positioning sleeve 2.

[0028] A locking clamp 6 is inserted into the surface of the positioning sleeve 2, and a limiting sleeve 9 is provided on the other side of the positioning sleeve 2. The limiting sleeve 9 pushes the locking clamp 6 to clamp the pin shaft body 1, so as to brake the positioning sleeve 2 on the rod body of the pin shaft body 1; an embedding groove 4 is provided on the inner ring surface of the positioning sleeve 2, and the embedding groove 4 is a circular ring groove. An elastic band 7 is fixed to the outer ring surface of the embedding groove 4. A through-hole 5 is provided on the outer ring surface of the positioning sleeve 2, and the through-hole 5 is connected to the embedding groove 4. There are multiple through-holes 5, and the locking clamp 6 is inserted into the through-hole 5, and the locking clamp 6 and the through-hole 5 correspond one to one; the locking The thickness of the clamping block 6 is greater than the depth of the through-hole 5, and a bevel 8 is provided at one end of the locking clamping block 6 away from the elastic band 7; a slot 14 is provided at one end of the limiting sleeve 9, and the slot 14 is a circular ring groove with a circular fracture, and an introduction ring 15 is inserted into the interior of the slot 14, one end of the introduction ring 15 is fixed to the surface of the positioning sleeve 2, and a rubber ring 16 is fixed on the other end of the introduction ring 15, and the rubber ring 16 is inserted into the slot 14, and the rubber ring 16 is a circular ring structure with a circular cross-section, and the cross-sectional diameter of the rubber ring 16 is greater than the slot width of the slot 14.

[0029] During use, when the positioning sleeve 2 moves to the specified position along the pin shaft body 1, the rotating limit sleeve 9 slides along the positioning sleeve 2. At this time, one end of the limit sleeve 9 pushes the locking clamp 6 along the inclined surface 8, and the locking clamp 6 retracts into the through-opening 5, and the locking clamp 6 tensions the elastic band 7 to produce elastic deformation. After the limit sleeve 9 passes over the locking clamp 6, the locking clamp 6 tightly clamps the elastic band 7 on the rod body of the pin shaft body 1, increasing the friction between the locking clamp 6 and the pin shaft body 1, thereby ensuring that the positioning sleeve 2 is firmly fixed on the shaft body of the pin shaft body 1, and the guide ring 15 and the rubber ring 16 are both inserted into the slot 14 to achieve traction and limitation of the limit sleeve 9, thereby preventing the limit sleeve 9 from moving freely on the positioning sleeve 2.

[0030] The inner ring surface of the limiting sleeve 9 is provided with an internal thread 10, and the outer ring surface of the positioning sleeve 2 is provided with an external thread 11, and the internal thread 10 and the external thread 11 are matched and connected; the outer ring surface of the limiting sleeve 9 is provided with a reserved groove 12, the reserved groove 12 is a circular groove, and a plurality of paddles 13 are fixed on the surface of the reserved groove 12.

[0031] During use, in order to improve the stability of the limiting sleeve 9 in squeezing and pushing the locking clamp 6, an internal thread 10 and an external thread 11 are screwed between the positioning sleeve 2 and the limiting sleeve 9 to prevent the limiting sleeve 9 from moving randomly on the positioning sleeve 2.

[0032] The specific use process of the pin is as follows:

[0033] Basic structure installation: The pin body 1 passes through the pin hole of the workpiece to play a connecting or supporting role. The positioning sleeve 2 is sleeved on one end of the pin body 1. The shape design of the positioning sleeve 2 (convex round tube) and the elastic deformation of the rubber ring 3 enable it to be firmly retained on the pin body 1 and provide a certain buffer and friction.

[0034] Adapt to different workpiece widths: According to the width of the workpiece, the positioning sleeve 2 can slide on the pin body 1 until it reaches a suitable position. The positioning sleeve 2 and the end plate of the pin body 1 are respectively located on both sides of the workpiece. This design allows the same pin body 1 to adapt to workpieces of different widths.

[0035] Rotational function of the baffle 20: When the workpiece needs to swing, if the baffle 20 contacts the workpiece, it will rotate on the positioning sleeve 2 through the traction swivel 18. The design of the traction swivel 18 and the ball 19 reduces the impact of the workpiece swing on the installation firmness of the positioning sleeve 2, making the positioning sleeve 2 more stable.

[0036] The braking effect of the locking clamp 6: after the positioning sleeve 2 moves to the specified position, the limiting sleeve 9 is rotated to make it slide along the positioning sleeve 2. One end of the limiting sleeve 9 pushes the locking clamp 6 along the inclined surface 8, so that the locking clamp 6 is retracted into the through-hole 5, and the elastic band 7 is stretched to produce elastic deformation. When the limiting sleeve 9 passes over the locking clamp 6, the locking clamp 6 tightly clamps the pin body 1 under the action of tension, which increases friction and ensures the firm fixation of the positioning sleeve 2.

[0037] Traction and limitation of the limiting sleeve 9: The guide ring 15 and the rubber ring 16 are both inserted into the groove 14 of the limiting sleeve 9, further traction and limitation of the limiting sleeve 9, and prevent it from moving randomly on the positioning sleeve 2. The cross-sectional diameter of the rubber ring 16 is larger than the notch width of the groove 14, which provides additional resistance and makes the limiting sleeve 9 more stable.

[0038] Threaded connection improves stability: the external thread 11 of the positioning sleeve 2 and the internal thread 10 of the limiting sleeve 9 are connected in a cooperative manner, which further improves the stability of the limiting sleeve 9 in squeezing and pushing the locking clamp 6, ensuring that the entire mechanism is more solid.

[0039] Use of the paddle 13: The paddle 13 on the surface of the reserved groove 12 facilitates the manual operation of the rotation and movement of the limit sleeve 9, thereby improving the convenience of use.

[0040] 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 mechanical pin with a positioning and locking mechanism, comprising a pin body (1), characterized in that: A positioning sleeve (2) is sleeved on one end of the pin shaft body (1), a blocking piece (20) is rotatably connected to one side of the positioning sleeve (2), a locking clamp (6) is inserted on the surface of the positioning sleeve (2), and a limiting sleeve (9) is sleeved on the other side of the positioning sleeve (2), the limiting sleeve (9) pushes the locking clamp (6) to clamp the pin shaft body (1), and is used to brake the positioning sleeve (2) on the rod body of the pin shaft body (1).

2. A mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: The positioning sleeve (2) is a convex-shaped circular tube, and a rubber ring (3) is fixed to the inner ring surface of the positioning sleeve (2). The rubber ring (3) is clamped between the pin shaft body (1) and the positioning sleeve (2) to generate elastic deformation.

3. A mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: A limit rotation groove (17) is provided on one side of the pin shaft body (1), the limit rotation groove (17) is in the form of a convex circular ring, a traction swivel (18) is rotatably connected inside the limit rotation groove (17), the traction swivel (18) is in the form of a convex circular ring plate, one end of the traction swivel (18) is fixed to the surface of a baffle (20), and the baffle (20) is in the form of a circular ring plate.

4. A mechanical pin with a positioning and locking mechanism according to claim 3, characterized in that: A ball (19) is embedded at the other end of the traction swivel (18), and the ball (19) contacts the side wall of the limiting rotation groove (17). A plurality of balls (19) are provided, and the plurality of balls (19) are distributed in a circle with the notch of the positioning sleeve (2) as the center.

5. The mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: The inner ring surface of the positioning sleeve (2) is provided with an embedding groove (4), the embedding groove (4) is a circular ring groove, an elastic band (7) is fixed to the outer ring surface of the embedding groove (4), the outer ring surface of the positioning sleeve (2) is provided with a through opening (5), the through opening (5) is communicated with the embedding groove (4), a plurality of through openings (5) are provided, a locking clamp (6) is inserted into the through opening (5), and the locking clamp (6) and the through opening (5) correspond one to one.

6. A mechanical pin with a positioning and locking mechanism according to claim 5, characterized in that: The thickness of the locking clamp (6) is greater than the depth of the through opening (5), and an inclined surface (8) is provided at one end of the locking clamp (6) away from the elastic band (7).

7. A mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: A clamping groove (14) is provided at one end of the limiting sleeve (9), the clamping groove (14) is a circular ring groove with a circular cutout, an introduction ring (15) is inserted into the interior of the clamping groove (14), one end of the introduction ring (15) is fixed to the surface of the positioning sleeve (2), a rubber ring (16) is sleeved and fixed at the other end of the introduction ring (15), the rubber ring (16) is inserted into the clamping groove (14), the rubber ring (16) is a circular ring structure with a circular cross section, and the cross-sectional diameter of the rubber ring (16) is greater than the slot width of the clamping groove (14).

8. The mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: The inner ring surface of the limiting sleeve (9) is provided with an internal thread (10), and the outer ring surface of the positioning sleeve (2) is provided with an external thread (11), and the internal thread (10) and the external thread (11) are matched and connected.

9. The mechanical pin with a positioning and locking mechanism according to claim 1, characterized in that: The outer ring surface of the limiting sleeve (9) is provided with a reserved groove (12), the reserved groove (12) is a circular ring groove, and a plurality of paddles (13) are fixed on the surface of the reserved groove (12).

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