Pin shaft fixing device

Abstract

The utility model discloses a pin shaft fixing device, which belongs to the technical field of engineering machinery, and comprises a pin shaft assembly and a connected piece, the pin shaft assembly comprises a pin shaft main body, the rear end of the pin shaft main body is connected with a pin shaft handle, the pin shaft main body is radially provided with at least two through holes, cylindrical pins are arranged in the through holes, the side surface of the connected piece is provided with a special-shaped hole, and the special-shaped hole is provided with a through hole. The axis of the pin shaft body and the axis of the pin shaft handle are not on the same straight line, and after the pin shaft assembly is installed on a connected piece, the end of the pin shaft handle is naturally perpendicular to the ground, so that a certain included angle is formed between the cylindrical pin and the special-shaped hole. The device is suitable for the crane, does not need a bayonet lock and a steel wire rope, can prevent the bayonet lock from scratching hands to influence the operation convenience of a product, avoids poor appearance influence, can prevent the bayonet lock from being deformed and damaged due to stress, and has the advantage of high reliability.

Description

Technical Field

[0001] The utility model relates to a pin fixing device and belongs to the technical field of engineering machinery. Background Art

[0002] Pins are widely used in the crane industry. As crane performance continues to improve and customers' pursuit of crane operation convenience continues to increase, the design and fixing methods of some current pins need to be improved during the product design process.

[0003] With the existing design, when the pin is connected, the pin is inserted into the connected part, and is generally positioned and fixed only by a cotter pin or a bayonet pin. The cotter pin is a disposable consumable. During the disassembly and assembly process of the pin, a new cotter pin needs to be replaced, which is troublesome to operate and has consumable costs. When the bayonet pin is used for positioning and fixing, the bayonet pin can be reused, but during the disassembly and assembly process of the pin, the bayonet pin is easy to lose, so the existing design adds a steel wire rope to bundle the bayonet pin and the connected part together. There are burrs after bundling the steel wire rope, and it is easy to scratch your hands when operating the pin and the bayonet pin, and the arrangement of the steel wire rope has a poor effect on the appearance. In addition to the problems during the disassembly and assembly process, during the operation of the crane, if the connected part is subjected to a large force and deformed, the bayonet pin is subjected to force, and the bayonet pin is weak in strength, and the bayonet pin is easily deformed or damaged. In summary, the design of the prior art affects the reliability, ease of operation, and appearance of the product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pin shaft fixing device that does not require a bayonet pin and a wire rope, can avoid scratching the hands and affecting the operational convenience of the product and avoid poor appearance, and can also avoid deformation and damage of the bayonet pin under force, and has the advantage of strong reliability.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A pin fixing device includes a pin assembly and a connected part, the pin assembly includes a pin body, a pin handle is connected to the rear end of the pin body, the pin body is radially provided with at least two through holes, a cylindrical pin is installed in the through hole, a special-shaped hole is provided on the side of the connected part, the axis of the pin body and the axis of the pin handle are not in a straight line, after the pin assembly is installed on the connected part, the end of the pin handle is naturally vertical to the ground, so that a certain angle is formed between the cylindrical pin and the special-shaped hole.

[0007] The through hole includes a first through hole and a second through hole, both of which are located on the rear side of the pin shaft body. The first through hole is farther away from the pin shaft handle than the second through hole. A first cylindrical pin and a second cylindrical pin are respectively installed in the first through hole and the second through hole. The special-shaped hole includes a first special-shaped hole, and the first cylindrical pin passes through the first special-shaped hole during installation.

[0008] The through hole includes a first through hole and a second through hole, the first through hole is located on the front side of the pin shaft body, and the second through hole is located on the rear side of the pin shaft body. The first through hole and the second through hole are respectively installed with a first cylindrical pin and a second cylindrical pin, and the special-shaped hole includes a first special-shaped hole and a second special-shaped hole. When installing, the first cylindrical pin passes through the first special-shaped hole and the second special-shaped hole in sequence.

[0009] The through hole includes a first through hole, a second through hole and a third through hole, the first through hole and the second through hole are located on the rear side of the pin shaft body, the first through hole is farther away from the pin shaft handle than the second through hole, and the third through hole is located on the rear side of the pin shaft body, the first through hole, the second through hole and the third through hole are respectively installed with a first cylindrical pin, a second cylindrical pin and a third cylindrical pin, the special-shaped hole includes a first special-shaped hole and a second special-shaped hole, when installed, the first cylindrical pin passes through the first special-shaped hole, and the third cylindrical pin passes through the first special-shaped hole and the second special-shaped hole in sequence.

[0010] The axis of the first through hole and the axis of the pin handle are in the same plane.

[0011] An axis of the first through hole and an axis of the second through hole form a certain angle.

[0012] The first cylindrical pin and the second cylindrical pin are fixed in the first through hole and the second through hole respectively by assembly or welding.

[0013] The first cylindrical pin, the second cylindrical pin and the third cylindrical pin are respectively fixed in the first through hole, the second through hole and the third through hole by assembly or welding.

[0014] The axes of the first through hole and the third through hole are in the same plane as the axis of the pin handle.

[0015] A certain angle is formed between the axes of the first through hole and the third through hole and the axis of the second through hole.

[0016] The beneficial effects of the utility model: the utility model provides a pin fixing device, the pin body is radially provided with at least two through holes, cylindrical pins are installed in the through holes, a special-shaped hole is provided on the side of the connected part, and the end of the pin handle is naturally vertical to the ground, so that a certain angle is formed between the cylindrical pin and the special-shaped hole, and the pin is fixed by the cooperation between the pin on the pin assembly and the special-shaped hole on the connected part, which can eliminate the operation of the latching pin in the process of plugging and pulling out the pin in the prior art, and there is no risk of losing the latching pin, and at the same time, the bundling anti-loss wire rope is saved, avoiding the problem of poor appearance; in addition, the cylindrical pin has a greater structural strength than the latching pin, and when the connected part is subjected to force deformation, the cylindrical pin has a higher bearing capacity than the latching pin; finally, the pin body is directly inserted into the connected part and the gravity of the pin handle drives the pin body to rotate to achieve fixation, which is simple and convenient during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the pin fixing device after installation in Example 1 of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure from the side in the direction of center A;

[0019] Figure 3 This is a schematic diagram of the structure of the pin assembly in Example 1 of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the installation process in Example 1 of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the pin fixing device after installation in Example 2 of the utility model;

[0022] Figure 6 for Figure 5 A schematic diagram of the structure from the side in the direction of center A;

[0023] Figure 7 This is a schematic diagram of the structure of the pin assembly in Example 2 of the utility model;

[0024] Figure 8 This is a structural schematic diagram of the installation process in Example 2 of the utility model;

[0025] Fig. 9 This is a schematic diagram of the structure of the pin fixing device after installation in Example 3 of the utility model;

[0026] Fig.10 for Fig. 9 A schematic diagram of the structure from the side in the direction of center A;

[0027] Fig.11 This is a schematic diagram of the structure of the pin assembly in Embodiment 3 of the present utility model;

[0028] Fig.12 This is a structural schematic diagram of the installation process in Example 3 of the utility model.

[0029] The reference numerals in the figure are as follows: 1-pin assembly; 2-connected part; 3-pin body; 4-first cylindrical pin; 5-pin handle; 6-second cylindrical pin; 7-second cylindrical pin; 21-first special-shaped hole; 22-second special-shaped hole. DETAILED DESCRIPTION

[0030] Example 1

[0031] like Figures 1 to 4 As shown, the utility model discloses a pin fixing device, including a pin assembly 1 and a connected member 2. The pin assembly 1 includes a pin body 3, and a pin handle 5 is connected to the rear end of the pin body 3. The pin body 3 is radially provided with at least two through holes. In this embodiment, the number of through holes is two, and the through holes include a first through hole and a second through hole. The first through hole and the second through hole are both located at the rear side of the pin body 3. The first through hole is farther away from the pin handle 5 than the second through hole. The first through hole and the second through hole are respectively installed with a first cylindrical pin 4 and a second cylindrical pin 6. The first cylindrical pin 4 and the second cylindrical pin 6 are respectively fixed in the first through hole and the second through hole by assembly or welding. A special-shaped hole is opened on the side of the connected member 2, and the special-shaped hole is opened according to the cross-sectional profile of the pin body 3 and the cylindrical pin in the pin assembly 1. The special-shaped hole includes a first special-shaped hole 21, and the first cylindrical pin 4 passes through the first special-shaped hole 21 during installation.

[0032] The axis of the pin body 3 and the axis of the pin handle 5 are not in a straight line, and an obtuse angle is formed between the two. The axis of the first through hole and the axis of the pin handle 5 are in the same plane. When the end of the pin handle 5 is naturally vertical to the ground, the first cylindrical pin 4 is in a vertical state. In addition, a certain angle is formed between the axis of the first through hole and the axis of the second through hole, and the two are staggered at a certain angle, which facilitates the insertion of the first cylindrical pin 4 and avoids the insertion of the second cylindrical pin 6. After the pin assembly 1 is installed on the connected part 2, the end of the pin handle 5 is naturally vertical to the ground, so that a certain angle is formed between the first cylindrical pin 4 and the second cylindrical pin 6 and the first special-shaped hole 21.

[0033] The working process of the utility model is as follows: when the pin assembly 1 is inserted into the first special-shaped hole 21 of the connected member 2, the pin assembly 1 is rotated by the pin handle 5 so that the first cylindrical pin 4 on the pin assembly 1 is aligned with the first special-shaped hole 21, such as Figure 3As shown; when the first cylindrical pin 4 passes through the first special-shaped hole 21 of the connected member 2, the end of the pin shaft body 3 has been inserted into the other special-shaped hole of the connected member 2, and the pin shaft handle 5 is released at this time. Due to the action of gravity, the end of the pin shaft handle 5 naturally hangs down to the ground to drive the pin shaft assembly 1 to rotate. At this time, the first special-shaped hole of the connected member 2 forms a certain angle with the first cylindrical pin 4 and the second cylindrical pin 6 on both sides thereof, so that the pin shaft is positioned and fixed, as shown in FIG. Figure 1 shown.

[0034] The utility model fixes the pin shaft by cooperating the pin shaft on the pin shaft assembly with the special-shaped hole on the connected part, which can eliminate the operation of the latching pin during each insertion and removal of the pin shaft in the prior art, and there is no risk of losing the latching pin. At the same time, the bundling anti-lost wire rope is omitted, and the problem of poor appearance is avoided. In addition, the cylindrical pin has a greater structural strength than the latching pin, and when the connected part is deformed by force, the cylindrical pin has a higher bearing capacity than the latching pin. Finally, the pin shaft body is directly inserted into the connected part and the gravity of the pin shaft handle drives the pin shaft body to rotate to achieve fixation, which is simple and convenient during operation.

[0035] Example 2

[0036] like Figures 5 to 8 As shown, the utility model discloses a pin fixing device, including a pin assembly 1 and a connected member 2. The pin assembly 1 includes a pin body 3, and a pin handle 5 is connected to the rear end of the pin body 3. The pin body 3 is radially provided with at least two through holes. In this embodiment, the number of through holes is two, and the through holes include a first through hole and a second through hole. The first through hole is located at the front side of the pin body 3, and the second through hole is located at the rear side of the pin body 3. A first cylindrical pin 4 and a second cylindrical pin 6 are respectively installed in the first through hole and the second through hole. The first cylindrical pin 4 and the second cylindrical pin 6 are respectively fixed in the first through hole and the second through hole by assembly or welding. A special-shaped hole is opened on the side of the connected member 2, and the special-shaped hole is opened according to the cross-sectional profile of the pin body 3 and the cylindrical pin in the pin assembly 1. The special-shaped holes include a first special-shaped hole 21 and a second special-shaped hole 22. The first special-shaped hole 21 and the second special-shaped hole 22 have the same angle. When installed, the first cylindrical pin 4 passes through the first special-shaped hole 21 and the second special-shaped hole 22 in sequence.

[0037] The axis of the pin body 3 and the axis of the pin handle 5 are not in a straight line, and an obtuse angle is formed between the two. The axis of the first through hole and the axis of the pin handle 5 are in the same plane. When the end of the pin handle 5 is naturally vertical to the ground, the first cylindrical pin 4 is in a vertical state. In addition, a certain angle is formed between the axis of the first through hole and the axis of the second through hole, and the two are staggered at a certain angle, which facilitates the insertion of the first cylindrical pin 4 and avoids the insertion of the second cylindrical pin 6. After the pin assembly 1 is installed on the connected part 2, the end of the pin handle 5 is naturally vertical to the ground, so that a certain angle is formed between the first cylindrical pin 4 and the second cylindrical pin 6 and the first special-shaped hole 21.

[0038] The working process of the utility model is as follows: when the pin assembly 1 is inserted into the first special-shaped hole 21 of the connected member 2, the pin assembly 1 is rotated by the pin handle 5 so that the first cylindrical pin 4 on the pin assembly 1 is aligned with the first special-shaped hole 21, such as Figure 7 As shown; when the first cylindrical pin 4 passes through the first special-shaped hole 21 and the second special-shaped hole 22 of the connected member 2 in sequence, the pin shaft handle 5 is released at this time. Due to the action of gravity, the end of the pin shaft handle 5 naturally hangs down to the ground to drive the pin shaft assembly 1 to rotate. At this time, the first special-shaped hole 21 and the second special-shaped hole 22 of the connected member 2 form a certain angle with the first cylindrical pin 4 and the second cylindrical pin 6 on both sides thereof, so as to achieve the positioning and fixing state of the pin shaft, as shown in FIG. Figure 5 shown.

[0039] The utility model fixes the pin shaft by cooperating the pin shaft on the pin shaft assembly with the special-shaped hole on the connected part, which can eliminate the operation of the latching pin during each insertion and removal of the pin shaft in the prior art, and there is no risk of losing the latching pin. At the same time, the bundling anti-lost wire rope is omitted, and the problem of poor appearance is avoided. In addition, the cylindrical pin has a greater structural strength than the latching pin, and when the connected part is deformed by force, the cylindrical pin has a higher bearing capacity than the latching pin. Finally, the pin shaft body is directly inserted into the connected part and the gravity of the pin shaft handle drives the pin shaft body to rotate to achieve fixation, which is simple and convenient during operation.

[0040] Example 3

[0041] like Figures 9 to 12 As shown, the utility model discloses a pin fixing device, including a pin assembly 1 and a connected member 2. The pin assembly 1 includes a pin body 3, and a pin handle 5 is connected to the rear end of the pin body 3. The pin body 3 is radially provided with at least two through holes. In this embodiment, the number of through holes is three, and the through holes include a first through hole, a second through hole, and a third through hole. The first through hole and the second through hole are located at the rear side of the pin body 3. The first through hole is farther away from the pin handle 5 than the second through hole. The third through hole is located at the rear side of the pin body 3. The first cylindrical pin 4, the second cylindrical pin 6, and the third cylindrical pin 7 are respectively installed in the first through hole, the second through hole, and the third through hole. The first cylindrical pin 4, the second cylindrical pin 6, and the third cylindrical pin 7 are respectively fixed in the first through hole, the second through hole, and the third through hole by assembly or welding. A special-shaped hole is opened on the side of the connected member 2, and the special-shaped hole is opened according to the cross-sectional profile of the pin body 3 and the cylindrical pin in the pin assembly 1. The special-shaped holes include a first special-shaped hole 21 and a second special-shaped hole 22 . The first special-shaped hole 21 and the second special-shaped hole 22 have the same angle. During installation, the third cylindrical pin 7 passes through the first special-shaped hole 21 and the second special-shaped hole 22 in sequence, and the first cylindrical pin 7 passes through the first special-shaped hole 21 .

[0042] The axis of the pin body 3 and the axis of the pin handle 5 are not in a straight line, and an obtuse angle is formed between them. The axis of the first through hole and the third through hole are in the same plane as the axis of the pin handle 5. When the end of the pin handle 5 is naturally vertical to the ground, the first cylindrical pin 4 and the third cylindrical pin 7 are in a vertical state. In addition, a certain angle is formed between the axis of the first through hole and the third through hole and the axis of the second through hole, and the two are staggered at a certain angle, which facilitates the insertion of the first cylindrical pin 4 and the third cylindrical pin 7 to avoid the insertion of the second cylindrical pin 6. After the pin assembly 1 is installed on the connected part 2, the end of the pin handle 5 is naturally vertical to the ground, so that a certain angle is formed between the first cylindrical pin 4, the second cylindrical pin 6 and the third cylindrical pin 7 and the first special-shaped hole 21 and the second special-shaped hole 22.

[0043] The working process of the utility model is as follows: when the pin assembly 1 is inserted into the first special-shaped hole 21 of the connected member 2, the pin assembly 1 is rotated by the pin handle 5 so that the first cylindrical pin 4 on the pin assembly 1 is aligned with the first special-shaped hole 21, such as Fig.11 As shown; when the third cylindrical pin 7 passes through the first special-shaped hole 21 and the second special-shaped hole 22 of the connected member 2 in sequence, and the first cylindrical pin 4 passes through the first special-shaped hole 21, the pin shaft handle 5 is released at this time, and the end of the pin shaft handle 5 naturally hangs down to the ground due to gravity, driving the pin shaft assembly 1 to rotate. At this time, the first special-shaped hole 21 and the second special-shaped hole 22 of the connected member 2 form a certain angle with the first cylindrical pin 4, the second cylindrical pin 6 and the third cylindrical pin 7 on both sides thereof, so as to achieve the positioning and fixing state of the pin shaft, as shown in FIG. Fig. 9 shown.

[0044] The utility model fixes the pin shaft by cooperating the pin shaft on the pin shaft assembly with the special-shaped hole on the connected part, which can eliminate the operation of the latching pin during each insertion and removal of the pin shaft in the prior art, and there is no risk of losing the latching pin. At the same time, the bundling anti-lost wire rope is omitted, and the problem of poor appearance is avoided. In addition, the cylindrical pin has a greater structural strength than the latching pin, and when the connected part is deformed by force, the cylindrical pin has a higher bearing capacity than the latching pin. Finally, the pin shaft body is directly inserted into the connected part and the gravity of the pin shaft handle drives the pin shaft body to rotate to achieve fixation, which is simple and convenient during operation.

[0045] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pin fixing device, characterized in that: The invention comprises a pin assembly (1) and a connected part (2), wherein the pin assembly (1) comprises a pin body (3), a pin handle (5) is connected to the rear end of the pin body (3), the pin body (3) is radially provided with at least two through holes, a cylindrical pin is installed in the through hole, a special-shaped hole is provided on the side of the connected part (2), the axis of the pin body (3) and the axis of the pin handle (5) are not in a straight line, and after the pin assembly (1) is installed on the connected part (2), the end of the pin handle (5) is naturally vertical to the ground, so that a certain angle is formed between the cylindrical pin and the special-shaped hole.

2. The pin fixing device according to claim 1, characterized in that: The through hole comprises a first through hole and a second through hole, the first through hole and the second through hole are both located at the rear side of the pin shaft body (3), the first through hole is farther away from the pin shaft handle (5) than the second through hole, a first cylindrical pin (4) and a second cylindrical pin (6) are respectively installed in the first through hole and the second through hole, the special-shaped hole comprises a first special-shaped hole (21), and the first cylindrical pin (4) passes through the first special-shaped hole (21) during installation.

3. The pin fixing device according to claim 1, characterized in that: The through hole comprises a first through hole and a second through hole, the first through hole being located at the front side of the pin shaft body (3), and the second through hole being located at the rear side of the pin shaft body (3), a first cylindrical pin (4) and a second cylindrical pin (6) being installed in the first through hole and the second through hole respectively, and the special-shaped hole comprises a first special-shaped hole (21) and a second special-shaped hole (22), and during installation, the first cylindrical pin (4) passes through the first special-shaped hole (21) and the second special-shaped hole (22) in sequence.

4. The pin fixing device according to claim 1, characterized in that: The through hole comprises a first through hole, a second through hole and a third through hole, the first through hole and the second through hole being located at the rear side of the pin shaft body (3), the first through hole being farther from the pin shaft handle (5) than the second through hole, the third through hole being located at the rear side of the pin shaft body (3), the first through hole, the second through hole and the third through hole being respectively installed with a first cylindrical pin (4), a second cylindrical pin (6) and a third cylindrical pin (7), the special-shaped hole comprising a first special-shaped hole (21) and a second special-shaped hole (22), when installed, the first cylindrical pin (4) passes through the first special-shaped hole (21), and the third cylindrical pin (7) passes through the first special-shaped hole (21) and the second special-shaped hole (22) in sequence.

5. The pin fixing device according to claim 2 or 3, characterized in that: The axis of the first through hole and the axis of the pin handle (5) are in the same plane.

6. The pin fixing device according to claim 2 or 3, characterized in that: An axis of the first through hole and an axis of the second through hole form a certain angle.

7. The pin fixing device according to claim 2 or 3, characterized in that: The first cylindrical pin (4) and the second cylindrical pin (6) are respectively fixed in the first through hole and the second through hole by assembly or welding.

8. The pin fixing device according to claim 4, characterized in that: The first cylindrical pin (4), the second cylindrical pin (6) and the third cylindrical pin (7) are respectively fixed in the first through hole, the second through hole and the third through hole by assembly or welding.

9. The pin fixing device according to claim 4, characterized in that: The axes of the first through hole and the third through hole are in the same plane as the axis of the pin handle (5).

10. The pin fixing device according to claim 9, characterized in that: A certain angle is formed between the axes of the first through hole and the third through hole and the axis of the second through hole.

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