Pin shaft capable of preventing pin from falling off

Abstract

The pin shaft comprises a shaft cap and a shaft rod arranged on one side of the shaft cap, receding grooves are formed in the top and the bottom of the end, away from the shaft cap, of the shaft rod, inserting plates are arranged in the receding grooves, and springs are connected to the sides, away from the shaft cap, of the inserting plates. And the shaft rod is located in the two receding grooves and is further vertically provided with a positioning hole in a penetrating mode, and a positioning pin is inserted into the positioning hole. By shifting the shifting plate, the inserting plate can be far away from or block the outlet and the inlet of the positioning hole, after the positioning pin is inserted, the shifting plate is directly loosened, the positioning pin can be descended to be fixed on the shaft rod under the action of the elastic force of the spring, the positioning pin can be pulled out by shifting the shifting plate again when the positioning pin needs to be disassembled, and the whole assembling and disassembling process is simple and rapid. And after installation, due to limiting of the insertion plate, the positioning pin cannot fall off, and the safety is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pin shaft that can prevent the pin from falling off. BACKGROUND

[0002] A pin shaft is a kind of standard fastener, which is a kind of shaft, generally composed of two sections with different diameters. The section with a smaller diameter is the working part, and the section with a larger diameter is used for installation and limiting. It is generally used for the connection between two parts with relative motion, forming a hinge connection at the pin shaft. It is usually locked with a split pin, is reliable in work, and is convenient to disassemble. At present, when the pin shaft is in use, the user will insert a positioning pin into the positioning hole at the end of the pin shaft to prevent the pin shaft from falling off, thereby achieving the use purpose.

[0003] However, the existing pin shaft is not easy to operate, even lacks a rigid limiting structure, which causes the positioning pin to be unable to be quickly installed, and the positioning pin is easily loose and falls off during use, which poses a safety hazard.

[0004] Therefore, it is necessary to invent a pin shaft that can prevent the pin from falling off to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] (I) Utility model purpose

[0006] To solve the technical problems in the background art, the utility model provides a pin shaft that can prevent the pin from falling off. By pushing the push plate, the insertion plate can be away from or block the outlet and inlet of the positioning hole. When the positioning pin is inserted, the push plate is directly loosened, and the positioning pin is fixed on the shaft by the elastic force of the spring. When it needs to be disassembled, the push plate is pushed again to pull out the positioning pin. The whole installation and disassembly process is simple and fast, and after installation, the positioning pin will not fall off due to the limiting of the insertion plate, and the safety is high.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a pin shaft that can prevent the pin from falling off, comprising a shaft cap and a shaft rod arranged on one side of the shaft cap;

[0009] The top and bottom of the end of the shaft rod away from the shaft cap are provided with a let-out slot, and the let-out slot is provided with an insertion plate inside. The side of the insertion plate away from the shaft cap is connected with a spring for driving the insertion plate to move horizontally inside the let-out slot;

[0010] The shaft rod is also vertically penetrated by a positioning hole inside the two let-out slots, and the positioning hole is inserted with a positioning pin. The positioning pin is transversely penetrated by two insertion holes from top to bottom.

[0011] The positioning pin is inserted into or out of the insertion hole by the insertion plate, realizing the assembly or separation with the shaft rod.

[0012] Preferably, the two insertion plates are connected with a push plate away from the side of the shaft cap, and the push plate is provided with a groove away from the outer side surface of the spring.

[0013] Preferably, the push plate is connected with a moving plate away from the side of the shaft cap, and the insertion plate is connected with a moving plate close to the side of the shaft cap, wherein the length of the moving plate connected with the push plate is greater than the length of the other moving plate, and the spring is arranged below the moving plate.

[0014] Preferably, the left and right side walls of the shaft rod at the accommodation groove are provided with a containing groove for inserting the moving plate.

[0015] Preferably, the positioning pin is connected with a guide protrusion on one side, the length of the guide protrusion is half of the length of the positioning pin, and the shaft rod is provided with a guide groove for inserting the guide protrusion at the position where the shaft rod is attached to the positioning pin.

[0016] Preferably, the guide protrusion is provided with two sections, which are arranged on the upper and lower sides of the lower clamping groove.

[0017] Preferably, the shaft cap and the shaft rod are integrally formed, and the shaft cap is provided with an oil injection channel on one side, the oil injection channel extends horizontally to the inside of the shaft rod, and the shaft rod is provided with a transmission channel vertically at the outlet of the oil injection channel. The shaft rod is provided with an oil storage groove horizontally at the outlet of the transmission channel.

[0018] Preferably, the shaft cap is provided with a blocking member at the inlet of the oil injection channel.

[0019] Compared with the prior art, the above technical scheme of the utility model has the beneficial effects that:

[0020] The utility model discloses a push plate, which makes the insertion plate away from the outlet and the inlet of the positioning hole, and the positioning pin can be directly inserted in the inside of the positioning hole at this time, and under the action of the guide protrusion, when the positioning pin cannot continue to insert, the position of the insertion plate and the insertion hole is aligned, at this time, the push plate is loosened, the spring is not extruded, and an elastic force is applied to the insertion plate, so that the insertion plate is reset and clamped into the inside of the insertion hole, and the positioning pin is limited. When the positioning pin needs to be removed, the two push plates are directly pushed, the insertion plate is pushed out of the insertion hole, the limitation of the positioning pin is removed, and the positioning pin can be directly pulled out. The whole installation and removal process of the positioning pin is simple and rapid, and the positioning pin does not deviate after installation, so that the shaft rod has good limitation and does not fall off in use, and the safety is high. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0022] Figure 1 It is a schematic view of the overall structure of the present application.

[0023] Figure 2 It is a schematic view of the overall structure of the present application. Figure 1

[0024] Figure 3 It is a schematic view of the overall structure of the present application.

[0025] Figure 4 It is a schematic view of the overall structure of the present application.

[0026] Figure 5 It is a schematic view of the overall structure of the present application. Figure 4

[0027] Figure 6 It is an exploded view of the plug-in board and the positioning pin of the present application.

[0028] Figure 7 It is a demonstration diagram when the positioning pin is inserted.

[0029] Figure 8 It is a demonstration diagram when the plug-in board is recycled.

[0030] Explanation of reference signs:

[0031] 1 shaft cap, 2 shaft rod, 3 accommodation slot, 4 plug-in board, 5 spring, 6 positioning hole, 7 positioning pin, 8 insertion hole, 9 push plate, 10 recess, 11 moving plate, 12 containing groove, 13 guide protrusion, 14 guide groove, 15 oil injection channel, 16 transmission channel, 17 oil storage groove, 18 plugging element. DETAILED DESCRIPTION

[0032] In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail in conjunction with the drawings.

[0033] The present application provides a pin shaft capable of preventing the pin from falling off, as shown in the accompanying drawings. Figures 1-8

[0034] ​​​The shaft rod 2 is provided with a let slot 3 at the top and bottom of the end away from the shaft cap 1, and the let slot 3 is provided with an insertion plate 4 inside, the insertion plate 4 is connected with a spring 5 away from the side of the shaft cap 1, for driving the insertion plate 4 to move transversely inside the let slot 3;

[0035] The shaft rod 2 is provided with a positioning hole 6 vertically through the inside of the two let slots 3, and the positioning hole 6 is inserted with a positioning pin 7, and the positioning pin 7 is transversely through two insertion holes 8 from top to bottom;

[0036] The positioning pin 7 is inserted or removed from the insertion hole 8 through the insertion plate 4, realizing the assembly or separation with the shaft rod 2.

[0037] In an embodiment, the two insertion plates 4 are connected with a push plate 9 away from the side of the shaft cap 1, the push plate 9 is provided with a groove 10 away from the outer side surface of the spring 5, so that the staff can quickly push the insertion plate 4, and the push plate 9 is connected with a moving plate 11 away from the side of the shaft cap 1 and the side of the insertion plate 4 close to the shaft cap 1, wherein the length of the moving plate 11 connected with the push plate 9 is greater than the length of the other moving plate 11, and the spring 5 is arranged below the moving plate 11, and the left and right side walls of the shaft rod 2 at the let slot 3 are provided with a containing groove 12 for inserting the moving plate 11, wherein the moving plate 11 can limit the insertion plate 4 and the push plate 9, so that they can be stably clamped inside the let slot 3, and the moving plate 11 above the spring 5 can also separate the spring 5 from the external environment, protecting the spring 5.

[0038] In an embodiment, the positioning pin 7 is connected with a guide protrusion 13, the length of the guide protrusion 13 is set to be half of the length of the positioning pin 7, for guiding the insertion of the positioning pin 7 into the positioning hole 6, and limiting the insertion amount of the positioning pin 7 when inserted, so that the positions of the insertion hole 8 and the insertion plate 4 can be aligned, and the shaft rod 2 is provided with a guide groove 14 for inserting the guide protrusion 13 at the joint with the positioning pin 7, and the guide protrusion 13 is provided with two sections, respectively located on the upper and lower sides of the lower clamping groove, so that the insertion plate 4 can penetrate the insertion hole 8 without being affected.

[0039] In one embodiment, the shaft cap 1 is integrally formed with the shaft rod 2, and an oil injection channel 15 is formed on one side of the shaft cap 1 and extends transversely into the shaft rod 2, and a transmission channel 16 is vertically formed on the outlet of the oil injection channel 15. An oil storage groove 17 is transversely formed on the outlet of the transmission channel 16, and a blocking piece 18 is installed on the inlet of the oil injection channel 15. The staff can inject lubricating oil into the oil injection channel 15, and the lubricating oil can be transmitted to the oil storage groove 17 under the transmission of the transmission channel 16. At this time, during the use of the shaft rod 2, the lubricating oil in the oil storage groove 17 is applied to the contact position of the shaft rod 2 and the external parts, and then applied to the entire outer surface of the shaft rod 2, thereby providing sufficient lubrication for the shaft rod 2 and reducing the wear of the shaft rod 2. The transversely arranged oil storage groove 17 is beneficial to expand the oil outlet surface and improve the lubrication effect of the shaft rod 2. The arrangement of the blocking piece 18 avoids the lubricating oil from being thrown out through the inlet of the oil injection channel 15, thereby avoiding the waste of lubricating oil.

[0040] The embodiment is specific: when the utility model is used, the staff first inserts the shaft rod 2 through the mounting hole of the required mounting part, and at this time, the two plug plates 4 are blocked at the outlet and the inlet of the positioning hole 6 under the elastic force of the spring 5;

[0041] The staff then pushes the two shift plates 9 through the groove 10, so that the plug plate 4 slides away from the shaft cap 1, and the spring 5 is compressed and shortened under stress. With continuous pushing, the plug plate 4 moves away from the outlet and the inlet of the positioning hole 6, that is, the positioning hole 6 is completely exposed. At this time, the staff aligns the guide protrusion 13 with the guide groove 14, and directly inserts the positioning pin 7 into the shaft rod 2 along the positioning hole 6;

[0042] When the guide protrusion 13 is completely inserted into the guide groove 14 and cannot be moved, it means that the positioning pin 7 reaches the predetermined position, that is, the center of the positioning pin 7 is aligned with the axis of the shaft rod 2, and at this time, the two plug plates 4 are also aligned with the two plug holes 8;

[0043] The staff then releases the two shift plates 9, and the spring 5 no longer receives pressure and restores the deformation to start extension, thereby exerting elastic force on the plug plate 4 to make the plug plate 4 pass through the plug hole 8, and the two moving plates 11 close to the shaft cap 1 are also clamped into the containing groove 12, and the tail ends of the two moving plates 11 away from the shaft cap 1 are still in the two containing grooves 12, thereby protecting the spring 5 and fixing the position of the plug plate 4, so that the plug plate 4 does not deviate, and the positioning pin 7 can be stably inserted into the positioning hole 6 to limit the shaft rod 2. The entire installation process is not only fast and simple, but also enables the positioning pin 7 to be firmly limited and fixed, so that the pin shaft does not fall off during use;

[0044] When the positioning pin 7 needs to be removed, the worker directly pushes the two push plates 9 to push the plug plate 4 out of the plug hole 8, thereby releasing the positioning of the positioning pin 7, and directly pulling out the positioning pin 7, thereby quickly completing the removal of the positioning pin 7.

[0045] The embodiment specifically solves the problem in the prior art that the pin shaft is not easy to operate and even lacks a rigid limiting structure, so that the positioning pin 7 cannot be quickly installed and is prone to loosening and falling off during use, thereby causing a safety hazard.

[0046] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A pin shaft capable of preventing pin withdrawal, characterized by: Including the shaft cap (1), and the shaft rod (2) is arranged on one side of the shaft cap (1); The top and bottom of the end of the shaft rod (2) away from the shaft cap (1) are provided with a let slot (3), the let slot (3) is provided with an insert plate (4) inside, the side of the insert plate (4) away from the shaft cap (1) is connected with a spring (5), which is used for driving the insert plate (4) to move horizontally inside the let slot (3); The shaft rod (2) is vertically penetrated by a positioning hole (6) inside the two let slots (3), the positioning hole (6) is inserted with a positioning pin (7), and the positioning pin (7) is transversely penetrated by two insertion holes (8) from top to bottom. The positioning pin (7) is inserted into or away from the insertion hole (8) through the insert plate (4), so as to realize the assembly or separation of the shaft rod (2).

2. A pin shaft according to claim 1, wherein: The side of the two insert plates (4) away from the shaft cap (1) is connected with a dial plate (9), and the outer surface of the dial plate (9) away from the spring (5) is provided with a groove (10).

3. A pin shaft according to claim 2, wherein: The side of the dial plate (9) away from the shaft cap (1) and the side of the insert plate (4) close to the shaft cap (1) are connected with a moving plate (11), the length of the moving plate (11) connected with the dial plate (9) is greater than that of the other moving plate (11), and the spring (5) is arranged below the moving plate (11).

4. A pin shaft according to claim 3, wherein: The left and right side walls of the shaft rod (2) at the let slot (3) are provided with a containing groove (12) for inserting the moving plate (11).

5. A pin shaft according to claim 1, wherein: The side of the positioning pin (7) is connected with a guide protrusion (13), the length of the guide protrusion (13) is half of the length of the positioning pin (7), and the shaft rod (2) is provided with a guide groove (14) for inserting the guide protrusion (13) at the abutting position of the shaft rod (2) and the positioning pin (7).

6. A pin shaft according to claim 5, wherein: The guide protrusion (13) is provided with two sections, which are located on the upper and lower sides of the lower clamping groove.

7. A pin shaft according to claim 1, wherein: The shaft cap (1) and the shaft rod (2) are integrally formed, and the side of the shaft cap (1) is provided with an oil injection channel (15), the oil injection channel (15) extends horizontally into the shaft rod (2), the shaft rod (2) is vertically provided with a transmission channel (16) at the outlet of the oil injection channel (15), and the shaft rod (2) is horizontally provided with an oil storage groove (17) at the outlet of the transmission channel (16).

8. A pin shaft according to claim 1, wherein: The shaft cap (1) is provided with a blocking piece (18) at the inlet of the oil injection channel (15).

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