CN217761693U

CN217761693U - Pin shaft fixing structure

Info

Publication number: CN217761693U
Application number: CN202220693368.0U
Authority: CN
Inventors: 吴海锋; 吴达鑫; 廖跃禄; 柯宝; 尹邦富
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-11-08
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to a connecting structure and discloses a pin shaft fixing structure, which comprises a pin shaft, a positioning piece and an axial fixing structure; one end of the pin shaft is provided with a limiting flange, and a rotation stopping structure is arranged on the limiting flange; the hinge pin is characterized in that the hinge pin penetrates through the fixing seat and the connecting piece from one side of the fixing seat, the connecting piece is connected to the inner side of the fixing seat, the positioning piece is fixed to the outer side of the fixing seat, a rotation stopping matching structure is arranged on the positioning piece, the rotation of the hinge pin can be limited by the rotation stopping matching structure and the rotation stopping structure in a matching mode, a clamping and positioning structure is arranged on the hinge pin, and the axial fixing structure can be inserted into the clamping and positioning structure to limit axial movement of the hinge pin. The utility model discloses a round pin axle fixed knot constructs fixed effectual, and easy dismounting to the round pin axle.

Description

Pin shaft fixing structure

Technical Field

The utility model relates to a connection structure specifically relates to a round pin axle fixed knot constructs.

Background

The pin shaft is a common connecting piece and can be used for static fixed connection of a connecting part and relative movement with a connected piece. The pin shaft is mainly used at the hinged position of two parts to form hinged connection. The pin shaft can be locked by using a positioning structure, so that the pin shaft is prevented from moving in the pin joint hole, the connection is reliable, and the disassembly is convenient.

Many connection positions in engineering machinery equipment need be retrained through the round pin axle, with connecting piece such as hydro-cylinder rotationally be fixed in on the fixing base, and engineering machinery's connecting piece is usually loaded greatly, in order to prevent round pin axle rotatory or axial displacement on the fixing base, fixes the round pin axle through using the great fixed knot of bearing capacity to construct. A commonly used pin shaft fixing structure is shown in figure 1, a pin shaft 1 penetrates through a pin shaft hole to connect an oil cylinder 7 to a fixing seat 4, one end of the pin shaft 1 is fixed through a pressing plate 8, the pressing plate 8 is fixed to the fixing seat 4 through a screw 9, and movement of the pin shaft 1 is limited.

The existing pin shaft fixing structure needs to fix the pressing plate on the fixing seat by using screws to fix the pin shaft, the fixing process is complex, the assembly efficiency is low, and the pin shaft is inconvenient to disassemble.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a round pin axle fixed knot constructs is provided, its installation dismantlement is convenient, and assembly efficiency is high.

In order to solve the technical problem, the utility model provides a pin shaft fixing structure, which comprises a pin shaft, a positioning piece and an axial fixing structure; one end of the pin shaft is provided with a limiting flange, and a rotation stopping structure is arranged on the limiting flange; the hinge pin penetrates through the fixing seat and the connecting piece from one side of the fixing seat, the connecting piece is connected to the inner side of the fixing seat, the positioning piece is fixed to the outer side of the fixing seat, a rotation stopping matching structure is arranged on the positioning piece, the rotation stopping matching structure can be matched with the rotation stopping structure to limit rotation of the hinge pin, a clamping positioning structure is arranged on the hinge pin, and the axial fixing structure can be inserted into the clamping positioning structure to limit axial movement of the hinge pin.

Preferably, the rotation stopping structure is a linear edge arranged on one side of the limiting flange, and the rotation stopping matching structure is a linear edge arranged on the opposite side of the positioning piece. In this preferred technical scheme, the linear structure of only revolving and the cooperation structure of only revolving are processed conveniently, can restrict the rotation of round pin axle effectively.

Further preferably, the axial fixing structure is arranged on the limiting flange and the positioning piece, and the axial fixing structure can be arranged between the limiting flange and the positioning piece. Through this preferred technical scheme, the setting element can cooperate with spacing flange, when the restriction round pin axle is rotatory, the axial displacement of restriction round pin axle.

Furthermore, joint location structure is including setting up flange block groove on the spacing flange and setting up location block groove on the setting element, the axial fixity structure is the block strip. In this preferred technical scheme, can through insert in flange clamping groove and the location clamping groove with the block strip, restrict the axial displacement of round pin axle.

Preferably, the rotation stopping structure is a groove or a protrusion arranged on one side of the limiting blocking edge, the rotation stopping matching structure is a protrusion or a groove arranged on the positioning piece, and the protrusion can be clamped with the groove. In this preferred technical scheme, through the cooperation of arch and recess, can form bigger anti-spin power to spacing flange to the rotation of round pin axle is restricted better.

Preferably, joint location structure is including setting up the round pin axle with the constant head tank of the relative one end of spacing flange, axial fixity structure includes circlip under the installation status of round pin axle, the constant head tank is located the outside of fixing base opposite side, circlip block is in the constant head tank. Through this preferred technical scheme, can use the cooperation of circlip and constant head tank to restrict the axial position of round pin axle, prevent the axial displacement of round pin axle.

Further preferably, the axial fixing structure further comprises a positioning gasket, and the positioning gasket is installed between the elastic retainer ring and the fixing seat. In this preferred technical scheme, the locating washer can reduce the pressure of circlip to the fixing base, prevents circlip to the wearing and tearing of fixing base, improves circlip's fixity ability.

Further, the positioning gasket is provided with a mounting opening, and the positioning gasket is mounted in the positioning groove through the mounting opening. Through this preferred technical scheme, can improve the axial confining force of fixed knot structure to the round pin axle, it is stronger to the axial positioning ability of round pin axle.

Preferably, the utility model discloses a round pin axle fixed knot constructs still includes the anticollision retaining ring, the anticollision retaining ring is fixed on the fixing base the outside of circlip. Through this preferred technical scheme, can prevent that the collision of outside object to the circlip round pin or scrape, guarantee the axially fixed effect of circlip to the round pin axle.

Further preferably, an operation opening is formed in the anti-collision check ring. In this preferred technical scheme, can install and dismantle the operation to circlip more conveniently through this operation mouth, make things convenient for the installation of round pin axle to fix and the dismantlement in the maintenance process.

Through the technical scheme, the utility model discloses a round pin axle fixed knot constructs through only on the setting element revolves the cooperation of structure and only revolves on the spacing flange, can restrict the rotary motion of spacing flange to the rotation of restriction round pin axle. Through with axial fixity structure cartridge in joint location structure, can restrict the axial displacement of round pin axle to the axial displacement of restriction round pin. Therefore the utility model discloses a round pin axle fixing device not only can restrict the rotation of round pin axle, can restrict the axial displacement of round pin axle moreover. The utility model discloses a restriction fixed knot constructs, when carrying out the installation location of round pin axle, only needs to carry out the cartridge to round pin axle and joint location structure, need not use dedicated instrument, and the installation is simple, and assembly efficiency is high, and is also more convenient to the dismantlement of round pin axle, has made things convenient for connection structure's maintenance and maintenance.

Other technical features and advantages of the present invention will be further described in the following detailed description.

Drawings

FIG. 1 is a schematic view of a conventional pin fixing structure;

FIG. 2 is a schematic diagram of an embodiment of the present invention;

fig. 3 is a schematic view of another perspective of an embodiment of the present invention;

FIG. 4 is a schematic view of a spacing rib and a positioning member according to an embodiment of the present invention;

FIG. 5 is a schematic view of an axial fixing structure and a clamping and positioning structure according to an embodiment of the present invention;

fig. 6 is a schematic view of a rotation stopping structure and a rotation stopping matching structure according to an embodiment of the present invention;

fig. 7 is a schematic view of a spacer according to an embodiment of the present invention;

fig. 8 is a schematic view of an embodiment of the present invention with an anti-collision baffle;

fig. 9 is a schematic view of a crash stop according to an embodiment of the present invention.

Description of the reference numerals

1. Pin shaft 11 limiting flange

111. Stop structure 112 flange engaging groove

2. Rotation stopping matching structure for positioning piece 21

22. Positioning engaging groove 31 engaging strip

32. Circlip 33 positioning gasket

331. Mounting opening 4 positioning seat

5. Connecting piece 6 anti-collision check ring

61. Operation port 7 oil cylinder

8. Pressing plate 9 screw

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1, the present invention discloses an embodiment of a pin fixing structure, which includes a pin 1, a positioning member 2 and an axial fixing structure. The main body part of the pin shaft 1 is a cylindrical shaft rod made of high-strength materials such as metal, one end of the shaft rod is fixedly connected to the middle part of a plate-shaped limiting flange 11, and the limiting flange 11 is usually made of metal plates. The shaft lever and the limiting flange 11 can be connected by welding, riveting and the like, and can also be integrally formed. Round pin axle 1 passes fixing base 4 and connecting piece 5 from one side of fixing base 4, connects connecting piece 5 in the inboard of fixing base 4 to connecting piece 5 can use round pin axle 1 to rotate for fixing base 4 as the rotation axis. The limiting flange 11 at one end of the pin shaft 1 is positioned on the outer side surface of one side of the fixed seat 4, the other end of the pin shaft 1 is inserted into the side wall of the other side of the fixed seat 4, the end part of the pin shaft can extend out of the side wall of the other side of the fixed seat 4 to reach the outer side of the side wall of the other side of the fixed seat 4, and the pin shaft can also be positioned inside the side wall of the other side of the fixed seat 4 or be parallel and level with the outer side surface of the side wall. The positioning element 2 is fixed on the outer side of the fixing seat 4 and is close to the position of the limiting flange 11, the limiting flange 11 is provided with a rotation stopping structure 111, and the positioning element 2 is provided with a rotation stopping matching structure 21. The rotation stopping structure 111 and the rotation stopping matching structure 21 can be various structures which can be matched with each other to limit the rotation of the limiting flange 11, namely, the rotation of the pin shaft 1, such as a linear edge, a convex groove structure, a tooth-shaped structure and the like. In the installation state of the pin shaft 1, the rotation stopping matching structure 21 forms a combination state with the rotation stopping structure 111, and the rotation of the limiting rib 11 is prevented. Still be provided with joint location structure on round pin axle 1, joint location structure can be various can through the structure of the axial displacement of joint mode restriction round pin axle 1, if set up fixed orifices, fixed slot, draw-in groove or fixture block etc. on round pin axle 1, axial fixity structure can be various can form complex structure with joint location structure, like joint strip, fixed block, jump ring, joint groove etc.. The axial fixing structure can be inserted into the clamping positioning structure, and the pin shaft 1 is limited to move axially relative to the fixing seat 4 by means of the fixing seat 4 or the positioning piece 2 and the like. Like this, just can be convenient restrict the axial displacement and the rotary motion of round pin axle 1, guarantee the fixed reliability and the stability of round pin axle, and the dismouting is all comparatively convenient.

The utility model discloses a some embodiments of round pin axle fixed knot constructs, as shown in fig. 2, only revolve the straight line limit that structure 111 formed for one side processing at spacing flange 11, only revolve the straight line limit that cooperation structure 21 formed for one side processing at setting element 2, setting element 2 is fixed on fixing base 4, make the line of the axle center of round pin axle 1 and the mid point of only revolving cooperation structure 21 perpendicular with the trend of only revolving cooperation structure 21, and only revolve the position looks adaptation of revolving structure 111 on the distance of cooperation structure 21 and the axle center of round pin axle 1 and spacing flange 11, when round pin axle 1 is under the mounted state, only revolve the structure 111 and can be close to only revolve cooperation structure 21, thereby can restrict the rotation of spacing flange 11 through setting element 2.

The utility model discloses a some embodiments of round pin axle fixed knot constructs, joint location structure sets up on spacing flange 11 and setting element 2, and axial fixity structure can install between spacing flange 11 and setting element 2, and the axial displacement of restriction spacing flange 11 for setting element 2, also be exactly the axial displacement of restriction round pin axle 1 for fixing base 4. Specifically, the clamping positioning structure can be a fixing hole penetrating through the limiting flange 11 and the positioning part 2, a positioning groove spanning the limiting flange 11 and the positioning part 2, a clamping groove, a clamping block and the like respectively arranged on the limiting flange 11 and the positioning part 2, and an axial fixing structure is a fixing shaft capable of being inserted into the fixing hole, a fixing strip inserted into the positioning groove, or a fixing block inserted into the clamping groove and used for limiting the position of the clamping block.

As a specific embodiment of the pin shaft fixing structure of the present invention, as shown in fig. 4 and 5, the clamping positioning structure includes a rib engaging groove 112 disposed on the limiting rib 11 and a positioning engaging groove 22 disposed on the positioning member 2, the width of the rib engaging groove 112 is the same as that of the positioning engaging groove 22, and when the pin shaft 1 is in the installation state, the rib engaging groove 112 is opposite to the positioning engaging groove 22; the axial fixing structure is an elongated engaging strip 31. The clamping strip 31 can be inserted into the groove cavity formed by the flange clamping groove 112 and the positioning clamping groove 22 and forms a certain degree of interference fit with the groove cavity, so that the relative movement between the limiting flange 11 and the positioning piece 2 can be limited, the axial movement of the pin shaft 1 can be limited, and the rotation of the pin shaft 1 can also be limited.

In some embodiments of the pin fixing structure of the present invention, as shown in fig. 6, the rotation stopping structure 111 is a groove (or a protrusion) disposed on one side of the limiting rib 11, and the rotation stopping matching structure 21 is a protrusion (or a groove) disposed on the positioning member 2. When the pin shaft 1 is in the installation state, the protrusion is clamped in the groove, and the positioning piece 2 is fixed on the fixed seat 4, namely, the protrusion (or the groove) is in the fixed state, so that the radial position of the groove (or the protrusion) clamped with the protrusion can be fixed, and the rotation of the pin shaft 1 is limited.

In some embodiments of the pin fixing structure of the present invention, as shown in fig. 3, when the pin 1 is in the installation state, the shaft rod of the pin 1 extends out of the side wall of the other side of the fixing base 4. The clamping positioning structure is a positioning groove which is arranged on the part, extending out of the fixed seat 4, of the shaft lever of the pin shaft 1, and the axial fixing structure is an elastic check ring 32 matched with the positioning groove. Circlip 32 overlaps on the axostylus axostyle of round pin axle 1 to the block is in the constant head tank, and circlip 32's periphery protrusion round pin axle 1's axostylus axostyle can support and lean on fixing base 4, prevents the axial displacement of round pin axle 1.

In some embodiments of the pin fixing structure of the present invention, as shown in fig. 3, a positioning gasket 33 is further installed between the elastic collar 32 and the fixing base 4 in the inner side of the elastic collar 32, and the elastic collar 32 and the positioning gasket 33 jointly form an axial fixing structure. The positioning gasket 33 can uniformly disperse the force applied to the elastic check ring 32 on the fixed seat 4, so that the stress area on the fixed seat 4 is increased, the pressure applied to the side wall of the fixed seat 4 is reduced, and the abrasion of the axial fixing structure on the contact part of the fixed seat 4 is reduced.

As a specific embodiment of the pin shaft fixing structure of the present invention, as shown in fig. 7, a mounting opening 331 is provided on one side of the positioning pad 33, the width of the mounting opening 331 is the same as the diameter of the central hole of the positioning pad, and the width of the mounting opening is the same as the diameter of the positioning groove on the pin shaft 1. The spacer 33 is mounted in the detent through the mounting opening 331 so that the central hole of the spacer 33 snaps into the detent. Thus, the positioning washer 33 can directly bear the axial force formed by the positioning groove, the bearing requirement on the elastic retainer ring 32 is reduced, and the axial stability of the pin shaft 1 is improved.

In some embodiments of the pin fixing structure of the present invention, as shown in fig. 8, the pin fixing structure of the present invention further includes an anti-collision retainer ring 6. Anticollision retaining ring 6 is made by metal material, for a cylindric structure, and anticollision retaining ring 6 welds in the outside of the lateral wall circlip 32 of fixing base 4 for the tip of round pin axle 1 axostylus axostyle, circlip 32 isotructure are located anticollision retaining ring 6's inside. Therefore, the impact of external objects on the elastic retainer ring 32 and other structures can be prevented, and the reliability of the pin shaft 1 and the axial fixing structure is ensured.

As a specific embodiment of the pin fixing structure of the present invention, as shown in fig. 9, an operation opening 61 having a long strip shape is provided on the anti-collision retaining ring 6. When crashproof retaining ring 6 welds on fixing base 4, operation mouth 61 is located the position that is close to fixing base 4 lateral wall, can conveniently take off circlip 6 block in the constant head tank through operation mouth 61, also can conveniently take off circlip from the constant head tank, when the locating pad 33 that has installing port 331 is used, also can conveniently take off locating pad 33 block in the constant head tank, perhaps from the mounting groove to make things convenient for the installation and the dismantlement of round pin axle 1.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the present invention is that it is possible to combine the simple variants of the technical solution of the present invention, including each specific technical feature, in any suitable way. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A pin shaft fixing structure is characterized by comprising a pin shaft (1), a positioning piece (2) and an axial fixing structure; one end of the pin shaft (1) is provided with a limiting flange (11), and a rotation stopping structure (111) is arranged on the limiting flange (11); round pin axle (1) passes from one side of fixing base (4) and connecting piece (5), will connecting piece (5) are connected the inboard of fixing base (4), setting element (2) are fixed the outside of fixing base (4), be provided with on setting element (2) and only revolve cooperation structure (21), with can pass through only revolve cooperation structure (21) with only revolve structure (111) cooperation restriction the rotation of round pin axle (1), be provided with joint location structure on round pin axle (1), with can through with axial fixity structure cartridge is in restrict in the joint location structure the axial displacement of round pin axle (1).

2. The pin fixing structure according to claim 1, wherein the rotation stopping structure (111) is a linear edge disposed on one side of the limiting rib (11), and the rotation stopping matching structure (21) is a linear edge disposed on the opposite side of the positioning member (2).

3. The pin fixing structure according to claim 1, wherein the snap-fit positioning structure is provided on the limiting rib (11) and the positioning member (2), and the axial fixing structure can be installed between the limiting rib (11) and the positioning member (2).

4. The pin shaft fixing structure according to claim 3, wherein the clamping positioning structure comprises a flange engaging groove (112) provided on the limiting flange (11) and a positioning engaging groove (22) provided on the positioning member (2), and the axial fixing structure is an engaging strip (31).

5. The pin fixing structure according to claim 1, wherein the rotation stopping structure (111) is a groove or a protrusion disposed on one side of the limiting rib (11), and the rotation stopping matching structure (21) is a protrusion or a groove disposed on the positioning member (2), and the protrusion can be engaged with the groove.

6. The pin securing structure according to any one of claims 1 to 5, wherein the snap-fit locating structure comprises a locating groove provided at an end of the pin (1) opposite to the retaining rib (11), and the axial securing structure comprises a circlip (32), and in the mounted state of the pin (1), the locating groove is located outside the other side of the fixed seat (4), and the circlip (32) is snapped into the locating groove.

7. The pin securing arrangement according to claim 6, characterized in that the axial securing arrangement further comprises a positioning washer (33), the positioning washer (33) being mounted between the circlip (32) and the fixed seat (4).

8. The pin fixing structure according to claim 7, wherein the positioning pad (33) is provided with a mounting opening (331), and the positioning pad (33) is mounted in the positioning slot through the mounting opening (331).

9. The pin shaft fixing structure according to claim 6, further comprising an anti-collision check ring (6), wherein the anti-collision check ring (6) is fixed on the fixing seat (4) and outside the elastic check ring (32).

10. The pin fixing structure according to claim 9, wherein the anti-collision check ring (6) is provided with an operation opening (61).