CN215666687U - Arm pin structure, arm joint device and operation machine - Google Patents
Arm pin structure, arm joint device and operation machine Download PDFInfo
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- CN215666687U CN215666687U CN202121988011.7U CN202121988011U CN215666687U CN 215666687 U CN215666687 U CN 215666687U CN 202121988011 U CN202121988011 U CN 202121988011U CN 215666687 U CN215666687 U CN 215666687U
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- arm
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- arm pin
- limiting
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Abstract
The utility model provides an arm pin structure, an arm joint device and an operating machine. This arm pin structure includes: the arm pin comprises an arm pin body, an arm pin cover plate, a limiting pin and an arm pin seat, wherein a first limiting groove is formed in the outer wall of the arm pin body from the top, a second limiting groove is formed in the inner wall of the arm pin cover plate from the top, the first limiting groove and the second limiting groove are correspondingly arranged, and the limiting pin is inserted from the top and is arranged in the second limiting groove and the first limiting groove. This arm festival device includes: a plurality of arm section bodies and the arm pin structure. The working machine includes: the arm pin structure or the arm joint device. The limiting pin is inserted from the upper part of the limiting groove, when the limiting pin is sheared and fails due to overlarge shearing force, the limiting pin can be quickly taken out of the limiting groove, and the limiting pin is quick to remove and convenient to replace.
Description
Technical Field
The utility model relates to the technical field of operation machinery, in particular to an arm pin structure, an arm joint device and operation machinery.
Background
The arm pin is not only a fixed locking piece for the relative position between the arm sections, but also a key bearing piece during the hoisting. With the continuous expansion of the scale of construction projects, the crane is increased from the original hundred-ton level to over thousand-ton level, and higher requirements are also placed on the safety and stability of the arm pin.
When the arm pin moves to the preset limit position, the downward pin pressing action is mainly completed by the arm pin cover plate, the arm pin cover plate is fixed on the arm pin seat through a bolt, and the bolt is tensioned and simultaneously bears the shearing force formed by the rotation of the arm pin, so that the rotation prevention of the limiting pin is required to be increased, and the shearing resistance is also enhanced. In the prior art, the arm pin limiting part mostly adopts a cylindrical limiting pin, the side wall of the lock pin cover plate is provided with a radial through hole, the cylindrical limiting pin penetrates through the through hole and is inserted into the lock pin limiting groove, the limiting structure mostly adopts one-side limiting, in the arm pin movement process, the contact mode between the cylindrical limiting pin and the arm pin limiting groove is line-surface contact, and the stress mode of the arm pin is one-side stress. Due to the arrangement of the limiting pin and the arm pin limiting groove, when the stress is large, the cylindrical limiting pin forms large shearing force under the influence of a contact mode; and when the single side is arranged, the single side of the arm pin is stressed, the stress distribution is uneven, and larger force acts on the cylindrical limiting pin, so that the cylindrical limiting pin is easily sheared to lose efficacy, and huge potential safety hazards are caused. In addition, the existing limiting pin is inserted into the arm pin cover plate through the mounting hole, when shearing occurs, the failed limiting pin can be taken out only by completely dismounting the arm pin cover plate fixing bolt, and the operation is complex.
SUMMERY OF THE UTILITY MODEL
The utility model provides an arm pin structure, an arm section device and an operating machine, which are used for solving the defects of complex dismounting operation and inconvenient replacement after an arm pin limiting part is sheared in the prior art.
The present invention provides an arm pin structure, including: the arm pin comprises an arm pin body, an arm pin cover plate, a limiting pin and an arm pin base, wherein a through hole for the arm pin body to penetrate through is formed in the arm pin base, the arm pin cover plate is pressed on the arm pin base, a first limiting groove is formed in the outer wall of the arm pin body through the top, a second limiting groove is formed in the inner wall of the arm pin cover plate through the top, the first limiting groove corresponds to the second limiting groove, the first end of the limiting pin is inserted into the second limiting groove from the top of the arm pin cover plate, and the second end of the limiting pin is inserted into the first limiting groove from the top of the arm pin body.
According to the arm pin structure provided by the utility model, the arm pin structure further comprises a first positioning part, a first mounting hole matched with the first positioning part is formed in the first end of the limiting pin, a second mounting hole matched with the first positioning part is formed in the bottom of the second limiting groove, and the first positioning part is sequentially inserted into the first mounting hole and the second mounting hole.
According to the arm pin structure provided by the utility model, the number of the limiting pins is multiple, the number of the first limiting grooves and the number of the second limiting grooves are multiple, the multiple first limiting grooves are arranged around the circumferential direction of the arm pin body, and the multiple second limiting grooves are arranged around the circumferential direction of the arm pin cover plate.
According to the arm pin structure provided by the utility model, the limiting pin is of a flat key structure.
According to the arm pin structure provided by the utility model, the arm pin structure further comprises a second positioning component, an axial third mounting hole is formed in the arm pin cover plate, an axial fourth mounting hole is formed in the arm pin seat, and the second positioning component is sequentially inserted into the third mounting hole and the fourth mounting hole along the axial direction.
According to the arm pin structure provided by the utility model, the arm pin structure further comprises a gasket, wherein a first stepped structure is formed at the bottom of the arm pin seat, and the gasket is arranged between the first stepped structure and the arm pin cover plate.
According to the arm pin structure provided by the utility model, the gasket is provided with a fifth mounting hole for the second positioning component to pass through.
According to the arm pin structure provided by the utility model, the arm pin structure further comprises a buffer pad, and the buffer pad is arranged between the arm pin cover plate and the arm pin body.
The present invention also provides an arm segment device, comprising: a plurality of arm segment bodies and an arm pin structure of an embodiment of the utility model, the arm pin structure being connected between adjacent arm segment bodies.
The present invention also provides a work machine comprising: the arm pin structure or the arm joint device of the embodiment of the utility model.
According to the arm pin structure provided by the utility model, the shear resistance is enhanced by arranging the limiting pin between the arm pin body and the arm pin cover plate, the limiting pin is inserted from the upper parts of the first limiting groove and the second limiting groove, when the limiting pin fails due to shearing, the sheared limiting pin can be quickly taken out from the first limiting groove and the second limiting groove, the failed limiting pin can be quickly replaced without detaching the arm pin cover plate, the operation is simple and convenient, and the replacement of the limiting pin is convenient.
Further, the utility model also provides an arm joint device, which utilizes the flat key structure to limit and adopts a matching mode of the limiting groove and the limiting pin which are convenient to replace due to the adoption of the arm pin structure, and has the advantages of strong shearing resistance, high mechanical strength, difficult damage and convenient replacement of the limiting pin.
Furthermore, the present invention also provides a working machine, which includes the arm pin structure or the arm joint device, and therefore, the working machine has the advantages.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an exploded view of an arm pin configuration provided by the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of an arm pin configuration provided by the present invention;
FIG. 3 is a top view of an arm pin configuration provided by the present invention;
reference numerals:
1: an arm pin body; 2: an arm pin cover plate; 3: an arm pin boss;
4: a spacing pin; 101: a first limit groove; 201: a second limit groove;
5: a first positioning member; 6: a second positioning member; 7: a gasket;
8: a cushion pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An arm pin structure of the present invention will be described below with reference to fig. 1 to 3. The arm pin structure includes: arm round pin body 1, arm round pin apron 2, spacer pin 4 and arm key seat 3 are equipped with the through-hole that supplies arm round pin body 1 to wear to establish on arm key seat 3, arm round pin apron 2 presses and locates arm key seat 3, has seted up first spacing groove 101 by the top at the outer wall of arm round pin body 1, has seted up second spacing groove 201 by the top at the inner wall of arm round pin apron 2, first spacing groove 101 with second spacing groove 201 corresponds the setting, and the first end of spacer pin 4 is inserted by the top of arm round pin apron 2 and is located second spacing groove 201, and the second end of spacer pin 4 is inserted by the top of arm round pin body 1 and is located first spacing groove 101.
Specifically, the arm pin cover plate 2 is sleeved on the outer peripheral side of the arm pin body 1, and is limited by the limit pin 4, so that the shearing resistance is enhanced. In this embodiment, the limit pin 4 includes an installation portion and a limit portion, the installation portion is placed in the first limit groove 101 of the arm pin body 1, the limit portion is placed in the second limit groove 201 of the arm pin cover plate 2, and the limit pin 4 is of a flat key structure.
Further, when the stop pin 4 needs to be replaced due to shearing failure, the stop pin 4 can be directly taken out from the upper parts of the first stop groove 101 and the second stop groove 201, so that the stop pin 4 can be rapidly dismounted without taking down the arm pin cover plate 2, and the failed stop pin 4 can be rapidly replaced, and the operation is simple and convenient.
The spacer pin 4 in this embodiment is the flat key structure in order to replace cylindrical spacer pin 4 among the prior art, the face-to-face contact through between flat key structure and first spacing groove 101 second spacing groove 201 replaces the line face contact between current cylindrical spacer pin 4 and the spacing groove, the lifting surface area has been increased, the effect of the power is expanded and is spread, the atress mode has been optimized, the structural stability of spacer pin 4 has been improved, difficult emergence damages to become invalid, the shearing resistance between arm round pin body 1 and arm round pin apron 2 has further been strengthened.
According to the arm pin structure provided by the utility model, the limiting pin 4 is arranged between the arm pin body 1 and the arm pin cover plate 2, the shearing resistance is enhanced, the limiting pin 4 is inserted from the upper parts of the first limiting groove 101 and the second limiting groove 201, after the limiting pin 4 fails due to shearing, the sheared limiting pin can be quickly taken out from the first limiting groove 101 and the second limiting groove 201, the failed limiting pin can be quickly replaced without dismounting the arm pin cover plate 2, the operation is simple and convenient, and the replacement of the limiting pin is convenient.
In one embodiment of the present invention, the arm pin structure further includes a first positioning member 5, a first end of the limit pin 4 is provided with a first mounting hole adapted to the first positioning member 5, a second mounting hole adapted to the first positioning member 5 is provided at the bottom of the second limit groove 201, and the first positioning member 5 is sequentially inserted into the first mounting hole and the second mounting hole. In this embodiment, be vertical setting in first mounting hole and the second mounting hole, first locating part 5 can pass first mounting hole and second mounting hole along its axial in proper order, realizes the axial positioning of spacer pin 4 on the one hand, avoids it to take place to remove at second spacing groove 201, and on the other hand, through the dismouting of first locating part 5, can change spacer pin 4 easily, when spacer pin 4 takes place to damage, convenient to detach changes. Specifically, the first positioning component 5 can adopt a bolt, the first mounting hole and the second mounting hole can be bolt holes, the bolt can be sequentially screwed in and locked by the first mounting hole and the second mounting hole, and when the limiting pin 4 needs to be replaced, the limiting pin 4 can be detached by unscrewing the bolt, so that the replacement is convenient.
In one embodiment of the present invention, the number of the stop pins 4 is plural, the number of the first stop grooves 101 and the second stop grooves 201 is plural, the plural first stop grooves 101 are disposed around the circumference of the arm pin body 1, and the plural second stop grooves 201 are disposed around the circumference of the arm pin cover plate 2. Specifically, as shown in fig. 1 and fig. 3, two limiting pins 4 may be adopted in the present embodiment, and two corresponding first limiting grooves 101 and two corresponding second limiting grooves 201 are also provided, so that the stress is uniform by providing a plurality of limiting structures, and the structure is safer and more stable. In addition, if a plurality of limiting pins 4 are adopted for limiting, the limiting pins are arranged at equal intervals or symmetrically, so that the uniform stress is ensured, and if the limiting pin 4 on one side fails, the limiting pins 4 on other sides can still exert a limiting function.
In one embodiment of the present invention, the arm pin structure further includes a second positioning member 6, an axial third mounting hole is formed in the arm pin cover plate 2, an axial fourth mounting hole is formed in the arm pin seat 3, and the second positioning member 6 is sequentially inserted into the third mounting hole and the fourth mounting hole along the axial direction. In the present embodiment, the arm pin cover plate 2 is fixed to the arm pin boss 3 by the second positioning member 6, the second positioning member 6 may be a bolt, and the third mounting hole and the fourth mounting hole may be bolt holes, and the arm pin cover plate 2 is fixed to the arm pin boss 3 by screwing the bolt into the bolt holes in order.
In one embodiment of the present invention, the arm pin structure further includes a spacer 7, the bottom of the arm pin base 3 is configured with a first step structure, and the spacer 7 is disposed between the first step structure and the arm pin cover plate 2. In this embodiment, the spacers 7 are provided between the arm pin boss 3 and the arm pin cover plate 2, and the setting height of the arm pin cover plate 2 is adjusted by the number of the spacers, thereby adjusting the limit height of the limit pin 4. It should be understood that the spacer 7 is provided with a fifth mounting hole for the second positioning member 6 (i.e., a bolt) to pass through, so that the arm pin cover 2, the spacer 7 and the arm pin base 3 are fixedly connected by the bolt.
In one embodiment of the present invention, the arm pin structure further includes a cushion pad 8, and the cushion pad 8 is disposed between the arm pin cover 2 and the arm pin body 1. Specifically, arm round pin body 1 is equipped with the second ladder structure, and the bottom of arm round pin apron 2 is equipped with the third ladder structure, and blotter 8 is located between second ladder structure and the third ladder structure. In this embodiment, the buffering pad 8 is disposed between the arm pin cover 2 and the arm pin body 1 to perform a buffering function, and the buffering pad 8 may be made of a material having a certain buffering function, such as rubber.
The utility model also provides an arm section device. This arm festival device includes: the arm pin structure is connected between the adjacent arm joint bodies, and the arm pin structure is used as a fixed locking piece of the relative position between the adjacent arm joints and is connected between the arm joints.
The arm joint device provided by the utility model has the advantages of strong shearing resistance, high mechanical strength and difficulty in damage due to the adoption of the arm pin structure limited by the flat key structure.
The utility model also provides a working machine, such as a crane, a heavy truck or a pump station. The working machine includes: the arm pin structure or the arm section device of the embodiment of the utility model.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An arm pin structure, comprising: the arm pin comprises an arm pin body, an arm pin cover plate, a limiting pin and an arm pin base, wherein a through hole for the arm pin body to penetrate through is formed in the arm pin base, the arm pin cover plate is pressed on the arm pin base, a first limiting groove is formed in the outer wall of the arm pin body through the top, a second limiting groove is formed in the inner wall of the arm pin cover plate through the top, the first limiting groove corresponds to the second limiting groove, the first end of the limiting pin is inserted into the second limiting groove from the top of the arm pin cover plate, and the second end of the limiting pin is inserted into the first limiting groove from the top of the arm pin body.
2. The arm pin structure according to claim 1, further comprising a first positioning member, wherein a first end of the stopper pin is provided with a first mounting hole adapted to the first positioning member, a second mounting hole adapted to the first positioning member is provided at a bottom of the second stopper groove, and the first positioning member is sequentially inserted into the first mounting hole and the second mounting hole.
3. The arm pin structure according to claim 1, wherein the plurality of the stopper pins are provided, the plurality of the first stopper grooves and the plurality of the second stopper grooves are provided, the plurality of the first stopper grooves are provided around a circumferential direction of the arm pin body, and the plurality of the second stopper grooves are provided around a circumferential direction of the arm pin cover plate.
4. The arm pin structure of claim 1, wherein the limit pin is a flat key structure.
5. The arm pin structure according to claim 1, further comprising a second positioning member, wherein an axial third mounting hole is formed in the arm pin cover plate, an axial fourth mounting hole is formed in the arm pin base, and the second positioning member is axially inserted into the third mounting hole and the fourth mounting hole in sequence.
6. The arm pin structure of claim 5, further comprising a spacer, wherein a bottom of the arm pin base is configured with a first step structure, and wherein the spacer is disposed between the first step structure and the arm pin cover plate.
7. The arm pin structure according to claim 6, wherein a fifth mounting hole through which the second positioning member passes is provided on the spacer.
8. The arm pin structure of claim 4, further comprising a cushion pad disposed between the arm pin cover plate and the arm pin body.
9. An arm segment apparatus, comprising: a plurality of arm segment bodies and an arm pin structure of any one of claims 1-8 connected between adjacent arm segment bodies.
10. A work machine, comprising: an arm pin structure as claimed in any one of claims 1 to 8 or an arm segment arrangement as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121988011.7U CN215666687U (en) | 2021-08-23 | 2021-08-23 | Arm pin structure, arm joint device and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121988011.7U CN215666687U (en) | 2021-08-23 | 2021-08-23 | Arm pin structure, arm joint device and operation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215666687U true CN215666687U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121988011.7U Active CN215666687U (en) | 2021-08-23 | 2021-08-23 | Arm pin structure, arm joint device and operation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215666687U (en) |
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2021
- 2021-08-23 CN CN202121988011.7U patent/CN215666687U/en active Active
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