Improved pin shaft

Abstract

The invention relates to the technical field of pin shafts, in particular to an improved pin shaft which comprises a pin shaft body, a preformed hole is formed in the surface of the pin shaft body, one end of a shaft body of the pin shaft body is sleeved with a buckle plate, a wear-resistant sleeve is fixed to the surface of the buckle plate and arranged on the shaft body of the pin shaft body in a sleeving mode, and a preformed groove is formed in the other end of the pin shaft body. A screw rod is inserted into the surface of the preformed groove, one end of the screw rod is fixed to the surface of the wear-resistant sleeve, the other end of the screw rod is sleeved with a nut in a threaded mode, two hoop plates are fixed to the surface of the buckle plate and used for clamping a barrier strip, and two rubber check rings are fixedly arranged on a rod body of the barrier strip in a sleeving mode; the pin shaft has the beneficial effects that the wear-resistant sleeve is sleeved on the pin shaft body, so that the wear resistance of the pin shaft is effectively improved. And the wear-resistant sleeve is made of a high-strength and high-wear-resistant material, so that the wear-resistant sleeve can bear larger friction force and wear and protect the pin shaft body from being damaged. The buckle plate and the pin shaft body are tightly connected through the structures such as the rubber clamping ring and the clamping groove, and the pin shaft is effectively prevented from loosening and falling off.

Description

Technical Field

[0001] The invention relates to the field of pins, in particular to an improved pin. Background Art

[0002] In traditional mechanical connections, pins are a common connection element widely used in various mechanical equipment and structures to connect and fix two or more parts. However, traditional pins have some problems during use, such as insufficient wear resistance, poor connection stability, and easy loosening. These problems are particularly prominent in situations where large loads and frequent movements are required.

[0003] In order to improve the wear resistance and connection stability of the pin, people have tried to improve the pin. A common improvement method is to add a wear-resistant layer to the surface of the pin, such as spraying wear-resistant materials or installing wear-resistant sleeves. However, these methods often have problems such as the wear-resistant layer easily falling off and the connection is not firm. In addition, traditional pins also have inconveniences during installation and removal, such as the need to use special tools and complicated operations.

[0004] Therefore, there is an urgent need for a new type of pin that can improve wear resistance and simplify the installation and disassembly process while ensuring connection stability. Summary of the invention

[0005] The object of the present invention is to provide an improved pin shaft 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: an improved pin shaft, comprising a pin shaft body, a reserved hole is opened on the surface of the pin shaft body, a buckle plate is sleeved on one end of the shaft body of the pin shaft body, a wear-resistant sleeve is fixed on the surface of the buckle plate, the wear-resistant sleeve is sleeved on the shaft body of the pin shaft body, a reserved groove is opened on the other end of the pin shaft body, a screw is inserted on the surface of the reserved groove, one end of the screw is fixed on the surface of the wear-resistant sleeve, and a nut is threaded on the other end of the screw, two sets of hoops are fixed on the surface of the buckle plate for clamping the baffle bar, and two rubber retaining rings are sleeved and fixed on the rod body of the baffle bar.

[0007] Preferably, the buckle plate is a concave-shaped circular plate, and a rubber clamping ring is fixed to the inner ring surface of the buckle plate. The inner ring diameter of the rubber clamping ring is smaller than the rod diameter of the pin shaft body. After the buckle plate is sleeved on the end of the pin shaft body, the rubber clamping ring is clamped between the buckle plate and the pin shaft body to produce elastic deformation.

[0008] Preferably, the reserved groove is an annular groove, and a plurality of through holes are formed on the surface of the reserved groove, the through holes correspond to the screw rods one by one, and the rod length of the screw rod is smaller than the thickness of the end plate of the pin shaft body.

[0009] Preferably, the inner ring surface of the reserved groove is provided with a card slot one, the card slot one is an annular groove, the outer ring surface of the reserved groove is fixed with a rubber retaining ring, the inner ring diameter of the rubber retaining ring is smaller than the inner ring diameter of the reserved groove, and the inner ring surface of the rubber retaining ring is inserted into the card slot one.

[0010] Preferably, a second card slot is provided at one end of the pin shaft body, an introduction ring is inserted into the interior of the second card slot, one end of the introduction ring is fixed in the groove body of the buckle plate, and the other end of the introduction ring is sleeved and fixed with a rubber sleeve, the rubber sleeve is inserted into the second card slot, and the second card slot is an annular groove with a circular opening, and the rubber sleeve is an annular plate with a circular cross section, and the diameter of the circular surface of the rubber sleeve cross section is larger than the slot width of the second card slot.

[0011] Preferably, a limiting groove is provided on the side of the buckle plate away from the pin shaft body, the limiting groove is an arc-shaped groove, the baffle rests on the limiting groove, the two groups of hoop plates are distributed up and down, each group of hoop plates is provided with two, the two hoop plates are symmetrically distributed about the limiting groove, and the hoop plates are arc-shaped plates, a rubber gasket is fixed on the inner ring surface of the hoop plate, and the rubber gasket is clamped between the baffle and the hoop plate.

[0012] Preferably, a notch is provided on the surface of one of the hoop plates, an elastic hanging piece is inserted into the inside of the notch, one end of the elastic hanging piece is fixed to the surface of the other hoop plate, and a clamping strip is fixed to the other end of the elastic hanging piece, the clamping strip is a right-angled trapezoidal strip, and the clamping strip blocks one side of one hoop plate.

[0013] Preferably, a pull ring is fixed on the surface of the elastic hanging piece, and the pull ring and the clamping strip are symmetrically distributed about the elastic hanging piece.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The improved pin proposed in the present invention effectively improves the wear resistance of the pin and prolongs its service life by sleeve-arranging a wear-resistant sleeve on the pin body. The wear-resistant sleeve is made of high-strength and high-wear-resistant material, can withstand greater friction and wear, and protect the pin body from damage. The gusset plate and the pin body are tightly connected through structures such as a rubber clamp ring and a card slot, which effectively prevents the pin from loosening and falling off. At the same time, the addition of elastic elements such as rubber sleeves and rubber retaining rings further enhances the stability and reliability of the connection. The pin provided by the present invention has two usage forms, which can be selected according to actual needs. When higher wear resistance is required, the gusset plate and the wear-resistant sleeve can be selected; when the wear resistance requirement is not high, only the pin body can be used. This design improves the adaptability and flexibility of the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure between the gusset plate and the baffle bar of the present invention;

[0018] Figure 3 It is a top view of the structure of the present invention;

[0019] Figure 4 for Figure 3 Structural cross-section view at AA in the middle;

[0020] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 6 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 7 This is a schematic diagram of the pin body structure of the present invention;

[0023] Figure 8 It is a schematic diagram of the connection structure between the pin body and the stop bar of the present invention;

[0024] Fig. 9 This is a schematic diagram of the connection structure between the gusset plate and the wear-resistant sleeve of the present invention;

[0025] Fig.10 for Fig. 9 A magnified schematic diagram of the structure at C in the middle;

[0026] Fig.11 It is a schematic diagram of the gusset plate structure of the present invention.

[0027] In the figure: pin body 1, reserved hole 2, buckle plate 3, rubber clamping ring 4, wear-resistant sleeve 5, reserved groove 6, through hole 7, screw 8, nut 9, rubber retaining ring 10, slot 1 11, slot 2 12, introduction ring 13, rubber sleeve 14, limit groove 15, retaining bar 16, hoop plate 17, rubber gasket 18, missing groove 19, elastic hanging piece 20, retaining bar 21, pull ring 22, rubber retaining ring 23. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-Figure 11The present invention provides a technical solution: an improved pin shaft, comprising a pin shaft body 1, a reserved hole 2 is opened on the surface of the pin shaft body 1, a buckle plate 3 is sleeved on one end of the shaft body of the pin shaft body 1, the buckle plate 3 is a "concave" shaped circular plate, a rubber clamping ring 4 is fixed on the inner ring surface of the buckle plate 3, the inner ring diameter of the rubber clamping ring 4 is smaller than the rod diameter of the pin shaft body 1, after the buckle plate 3 is sleeved on the end of the pin shaft body 1, the rubber clamping ring 4 is clamped between the buckle plate 3 and the pin shaft body 1 to generate elastic deformation; a wear-resistant sleeve 5 is fixed on the surface of the buckle plate 3, and the wear-resistant sleeve 5 is sleeved on the shaft body of the pin shaft body 1. The pin shaft body A reserved groove 6 is provided at the other end of the body 1, a screw 8 is inserted into the surface of the reserved groove 6, one end of the screw 8 is fixed to the surface of the wear-resistant sleeve 5, the reserved groove 6 is an annular groove, a plurality of through holes 7 are provided on the surface of the reserved groove 6, the through holes 7 and the screw 8 correspond one to one, the rod length of the screw 8 is less than the thickness of the end plate of the pin shaft body 1, a card groove 11 is provided on the inner ring surface of the reserved groove 6, the card groove 11 is an annular groove, a rubber retaining ring 10 is fixed to the outer ring surface of the reserved groove 6, the inner ring diameter of the rubber retaining ring 10 is smaller than the inner ring diameter of the reserved groove 6, and the inner ring surface of the rubber retaining ring 10 is inserted into the card groove 11.

[0030] When in use, the pin shaft body 1 has two usage forms. The first is: the buckle plate 3 and the wear-resistant sleeve 5 are not installed on the shaft body of the pin shaft body 1. After the pin shaft body 1 passes through the workpiece, the baffle 16 is inserted into the reserved hole 2 on the surface of the pin shaft body 1. At this time, the rubber clamping ring 4 blocks the two sides of the reserved hole 2 to achieve anti-slip limit after the buckle plate 3 is inserted into the reserved hole 2; the second usage state is: the wear-resistant sleeve 5 is sleeved on the rod body of the pin shaft body 1, and the screw 8 is inserted into the reserved groove 6 through the through hole 7, the rubber baffle ring 10 is turned over and the nut 9 is sleeved and screwed on the screw 8. After locking the screw 8 and the nut 9, one end of the pin shaft body 1 is inserted into the groove body of the buckle plate 3. At this time, the wear-resistant sleeve 5 is on the outside of the rod body of the pin shaft body 1 to achieve wear-resistant protection of the rod body of the pin shaft body 1. When the wear-resistant sleeve 5 is severely worn, the wear-resistant sleeve 5 connecting the buckle plate 3 is removed from the rod body of the pin shaft body 1, and the pin shaft body 1 can be used alone.

[0031] A second card slot 12 is provided at one end of the pin shaft body 1, and an introduction ring 13 is inserted into the interior of the second card slot 12. One end of the introduction ring 13 is fixed in the groove body of the buckle plate 3, and the other end of the introduction ring 13 is sleeved and fixed with a rubber sleeve 14. The rubber sleeve 14 is inserted into the second card slot 12, and the second card slot 12 is an annular groove with a circular opening, and the rubber sleeve 14 is an annular plate with a circular cross section. The diameter of the circular surface of the rubber sleeve 14 is greater than the slot width of the second card slot 12.

[0032] During use, after one end of the pin body 1 is inserted into the buckle plate 3, the guide ring 13 and the rubber sleeve 14 are squeezed into the second groove 12, thereby pre-limiting the pin body 1 and the buckle plate 3. That is, when the screw 8 and the nut 9 are not locked, the buckle plate 3 will not be detached from the end of the pin body 1, and the rubber sleeve 14 is clamped between the buckle plate 3 and the pin body 1 and deformed, acting as an elastic gasket for the locked nut 9, thereby preventing the screw 8 and the nut 9 from loosening. The other end of the screw rod 8 is sleeved with a nut 9, and two groups of hoop plates 17 are fixed on the surface of the gusset plate 3 for clamping the stop bar 16. Two rubber retaining rings 23 are sleeved and fixed on the rod body of the stop bar 16. A limiting groove 15 is opened on the side of the gusset plate 3 away from the pin shaft body 1. The limiting groove 15 is an arc-shaped groove, and the stop bar 16 leans against the limiting groove 15. The two groups of hoop plates 17 are distributed up and down, and each group of hoop plates 17 is provided with two. The two hoop plates 17 are symmetrically distributed about the limiting groove 15, and the hoop plates 17 are arc-shaped plates. The inner annular surface of the hoop plates 17 is fixed There is a rubber gasket 18, which is clamped between the baffle 16 and the hoop plate 17; a notch 19 is opened on the surface of one of the hoop plates 17, and an elastic hanging piece 20 is inserted into the inside of the notch 19, one end of the elastic hanging piece 20 is fixed to the surface of the other hoop plate 17, and a clamping strip 21 is fixed to the other end of the elastic hanging piece 20, and the clamping strip 21 is a right-angled trapezoidal strip, and the clamping strip 21 blocks one side of one hoop plate 17; a pull ring 22 is fixed on the surface of the elastic hanging piece 20, and the pull ring 22 and the clamping strip 21 are symmetrically distributed about the elastic hanging piece 20.

[0033] During use, when the wear-resistant sleeve 5 is installed on the rod body of the pin shaft body 1, the baffle 16 is inserted between the two groups of hoop plates 17. The two hoop plates 17 of each group are connected by an elastic hanging piece 20 and a clamping strip 21 to ensure that the two hoop plates 17 tightly clamp the baffle 16 to prevent the baffle 16 from falling off. When removing the baffle 16, pinch the pull ring 22 by hand to stretch the elastic hanging piece 20 to deform. After the clamping strip 21 no longer blocks one side of the hoop plate 17, swing the two hoop plates 17 apart and push down the baffle 16. After the baffle 16 and the hoop plate 17 are misaligned, the baffle 16 can be removed.

[0034] The process of using the improved pin is as follows:

[0035] Check the parts: confirm that the pin body 1, buckle plate 3, wear-resistant sleeve 5, rubber clamp ring 4, rubber retaining ring 10, screw 8, nut 9, guide ring 13, rubber sleeve 14, retaining bar 16, hoop plate 17, rubber gasket 18, elastic hanging piece 20, clamping strip 21 and pull ring 22 are complete and intact. Determine the use form: according to specific needs, determine which form of the pin body 1 is used: the form with buckle plate 3 and wear-resistant sleeve 5 or the form of only using the pin body 1.

[0036] 2. The first form of use (without gusset plate 3 and wear-resistant sleeve 5)

[0037] The pin body 1 is passed through the workpiece to be connected. The stop bar 16 is inserted into the reserved hole 2 on the surface of the pin body 1, and the rubber clamp ring 4 is blocked on both sides of the reserved hole 2 to prevent the gusset plate 3 (if used) from falling off.

[0038] 3. Second use form (buckle plate 3 and wear-resistant sleeve 5)

[0039] Assemble the gusset plate 3 and the wear-resistant sleeve 5: Slide the wear-resistant sleeve 5 onto the rod of the pin body 1. Slide the gusset plate 3 onto the end of the pin body 1, and ensure that the rubber clamp ring 4 is clamped between the gusset plate 3 and the pin body 1 to produce elastic deformation. Fix one end of the introduction ring 13 in the groove of the gusset plate 3. Slide the rubber sleeve 14 onto the other end of the introduction ring 13 and insert it into the card slot 2 12 at one end of the pin body 1. Pass the screw 8 through the through-holes 7 on the gusset plate 3 and the wear-resistant sleeve 5, and insert it into the reserved groove 6 at the other end of the pin body 1. Turn over the rubber retaining ring 10, sleeve the nut 9 onto the screw 8, and lock it. Insert the retaining bar 16 between the two sets of hoop plates 17 on the surface of the gusset plate 3. Use the elastic hanging piece 20 and the clamping strip 21 to connect the two hoop plates 17, and ensure that the retaining bar 16 is tightly clamped.

[0040] IV. Use and maintenance Normal use: Insert or fix the pin body 1 into the corresponding component according to the connection requirements. Replacement of the wear-resistant sleeve 5: When the wear-resistant sleeve 5 is severely worn, loosen the nut 9 and remove the wear-resistant sleeve 5 and the buckle plate 3 from the pin body 1. Only use the pin body 1, or replace with a new wear-resistant sleeve 5 and buckle plate 3. Removal of the baffle 16: When the baffle 16 needs to be removed, pinch the pull ring 22 by hand to stretch the elastic hanging piece 20 to deform. Swing and pry apart the two hoop plates 17, and push down the baffle 16 to remove it after it is misaligned with the hoop plates 17. Regular inspection: Regularly check the wear and looseness of the pin body 1, buckle plate 3, wear-resistant sleeve 5 and other components. Replace or repair if necessary.

[0041] 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. An improved pin shaft, comprising a pin shaft body (1), a surface of the pin shaft body (1) is provided with a reserved hole (2), characterized in that: A buckle plate (3) is sleeved on one end of the shaft body of the pin shaft body (1), a wear-resistant sleeve (5) is fixed on the surface of the buckle plate (3), and the wear-resistant sleeve (5) is sleeved on the shaft body of the pin shaft body (1). A reserved groove (6) is opened on the other end of the pin shaft body (1), and a screw rod (8) is inserted into the surface of the reserved groove (6). One end of the screw rod (8) is fixed on the surface of the wear-resistant sleeve (5), and a nut (9) is sleeved on the other end of the screw rod (8). Two groups of hoop plates (17) are fixed on the surface of the buckle plate (3) for clamping the blocking bar (16), and two rubber retaining rings (23) are sleeved and fixed on the rod body of the blocking bar (16).

2. An improved pin according to claim 1, characterized in that: The buckle plate (3) is a concave-shaped circular plate. A rubber clamping ring (4) is fixed to the inner ring surface of the buckle plate (3). The inner ring diameter of the rubber clamping ring (4) is smaller than the rod diameter of the pin shaft body (1). After the buckle plate (3) is sleeved on the end of the pin shaft body (1), the rubber clamping ring (4) is clamped between the buckle plate (3) and the pin shaft body (1) to generate elastic deformation.

3. An improved pin according to claim 1, characterized in that: The reserved groove (6) is an annular groove, and a plurality of through holes (7) are formed on the surface of the reserved groove (6). The through holes (7) correspond to the screw rods (8) one by one, and the length of the screw rods (8) is less than the thickness of the end plate of the pin shaft body (1).

4. The improved pin according to claim 1, characterized in that: The inner ring surface of the reserved groove (6) is provided with a clamping groove (11), which is an annular groove. A rubber retaining ring (10) is fixed to the outer ring surface of the reserved groove (6), the inner ring diameter of the rubber retaining ring (10) is smaller than the inner ring diameter of the reserved groove (6), and the inner ring surface of the rubber retaining ring (10) is inserted into the clamping groove (11).

5. The improved pin according to claim 1, characterized in that: A second clamping groove (12) is provided at one end of the pin shaft body (1), an introduction ring (13) is inserted into the interior of the second clamping groove (12), one end of the introduction ring (13) is fixed in the groove body of the buckle plate (3), and a rubber sleeve (14) is sleeved and fixed on the other end of the introduction ring (13), the rubber sleeve (14) is inserted into the second clamping groove (12), and the second clamping groove (12) is an annular groove with a circular opening, and the rubber sleeve (14) is an annular plate with a circular surface in cross section, and the circular surface diameter of the rubber sleeve (14) is greater than the slot width of the second clamping groove (12).

6. The improved pin according to claim 1, characterized in that: A limiting groove (15) is provided on a side of the buckle plate (3) away from the pin shaft body (1), the limiting groove (15) is an arc-shaped groove, the retaining bar (16) is against the limiting groove (15), two groups of hoop plates (17) are distributed up and down, each group of hoop plates (17) is provided with two, the two hoop plates (17) are symmetrically distributed about the limiting groove (15), and the hoop plates (17) are arc-shaped plates, a rubber gasket (18) is fixed on the inner ring surface of the hoop plate (17), and the rubber gasket (18) is clamped between the retaining bar (16) and the hoop plate (17).

7. An improved pin according to claim 6, characterized in that: A notch (19) is provided on the surface of one hoop plate (17), an elastic hanging piece (20) is inserted into the interior of the notch (19), one end of the elastic hanging piece (20) is fixed to the surface of the other hoop plate (17), and a clamping strip (21) is fixed to the other end of the elastic hanging piece (20), the clamping strip (21) is a right-angle trapezoidal strip, and the clamping strip (21) blocks one side of one hoop plate (17).

8. An improved pin according to claim 7, characterized in that: A pull ring (22) is fixed on the surface of the elastic hanging piece (20), and the pull ring (22) and the clamping strip (21) are symmetrically distributed with respect to the elastic hanging piece (20).

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