CN202971546U

CN202971546U - Pin shaft pallet and hinged structure

Info

Publication number: CN202971546U
Application number: CN 201220715091
Authority: CN
Inventors: 李倩; 宋开宇; 方丹
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-06-05
Anticipated expiration: 2022-12-21

Abstract

The utility model discloses a pin shaft pallet and a hinged structure comprising the same. The pin shaft pallet comprises a body (30), a fastening hole (32) is formed in the body, a clamping hole (31) is further formed in the body and consists of a large hole part (31a) and a clamping part (31b), the profile of the clamping part is defined by two opposite straight side edges (311) and a bottom edge (312) connected between the two straight side edges, the large hole part is communicated with the clamping part at the top of the clamping part, and the maximum diameter of the inner large hole part containing a pin shaft is greater than the distance between the two straight side edges. When the pin shaft is fixed by utilizing the pin shaft pallet, two grooves are symmetrically formed in the pin shaft, and the two clamping straight side edges of the clamping hole in the pin shaft pallet are clamped in the two grooves, thereby being capable of preventing the rotation or shifting of the pin shaft. The two grooves are formed in the pin shaft symmetrically, so that the pin shaft can deform uniformly.

Description

Bearing pin clamp and hinging structure

Technical field

The utility model relates to the assembling field of machinery, particularly, relates to a kind of bearing pin clamp and a kind of hinging structure that comprises this bearing pin clamp.

Background technique

There are a lot of parts to adopt bearing pin to carry out in engineering machinery hinged, as shown in Fig. 1 and Fig. 2.The first workpiece 1 and second workpiece 2 are hinged by bearing pin 4.In order to prevent bearing pin 4 rotations or mobile, usually in the end of bearing pin 4, bearing pin clamp 3 is set.This bearing pin clamp 3 inserts in the groove that is arranged on bearing pin 4, then utilizes clamping bolt that bearing pin clamp 3 is fixed on second workpiece 2.

As shown in Fig. 1 and Fig. 2, an end of bearing pin 4 is provided with a groove, makes the bearing pin internal stress distribution inhomogeneous, and then makes bearing pin 4 produce inhomogeneous distortion.

Therefore, how to prevent in fixed pin shaft that bearing pin from producing inhomogeneous distortion and becoming the technical problem that related domain needs to be resolved hurrily.

The model utility content

The purpose of this utility model is to provide a kind of bearing pin clamp and a kind of hinging structure that comprises this bearing pin clamp.This bearing pin clamp is fixed pin shaft effectively, and can prevent that bearing pin from producing inhomogeneous distortion.

To achieve these goals, as an aspect of the present utility model, a kind of bearing pin clamp, this bearing pin clamp comprises body, be provided with fastener hole on this body, wherein, also be formed with blocked hole on described body, described blocked hole comprises macropore section and inserted part, the profile of this inserted part is surrounded by two relative straight sided and the base that is connected between these two straight sided, described macropore section is at the top of described inserted part and connect with this inserted part, and the maximum diameter of the bearing pin that described macropore section can hold is greater than the distance between described two straight sided.

Preferably, described base is circular arc, and the radius on described base is identical with described macropore section radius.

Preferably, described fastener hole is one.

as another aspect of the present utility model, a kind of hinging structure also is provided, this hinging structure comprises first component, second component, with this first component and the hinged bearing pin of second component, bearing pin clamp and clamping bolt, wherein, described bearing pin clamp is above-mentioned bearing pin clamp provided by the utility model, be provided with two grooves on the circumferential surface of at least one end of described bearing pin, each groove part has two sidewalls and a diapire, and the diapire of described two grooves is parallel to each other, described two straight sided of the described inserted part of described bearing pin clamp lay respectively in described two grooves, described clamping bolt passes described fastener hole described bearing pin clamp is fixed on described first component or described second component.

Preferably, described first component is the piston rod of piston cylinder, and described second component is the jib supporting element, and this jib supporting element comprises the jib dunnage that is oppositely arranged, and described first component is hinged between the described jib dunnage that is oppositely arranged by described bearing pin.

Preferably, the two ends of described bearing pin are provided with described bearing pin clamp.

When utilizing bearing pin clamp fixed pin shaft described in the utility model, be symmetrical arranged two grooves on bearing pin, two straight sided of the blocked hole on the bearing pin clamp are connected in two grooves, can prevent that bearing pin from rotating or play.Owing to being symmetrical arranged two grooves on bearing pin, thus can so that the bearing pin distortion evenly.

Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.

Description of drawings

Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the sectional view of hinging structure of the prior art;

Fig. 2 is the plan view of the hinging structure described in Fig. 1;

Fig. 3 is the plan view of the bearing pin clamp that provides of the utility model;

Fig. 4 is the plan view of hinging structure provided by the utility model;

Fig. 5 is the sectional view of the hinging structure shown in Fig. 4;

Fig. 6 is the bearing pin that the hinging structure in Fig. 4 and Fig. 5 uses;

Fig. 7 is the A-A sectional view of the bearing pin shown in Fig. 6.

Description of reference numerals

1 first component 2 second components

3 bearing pin clamp 4 bearing pins

5 clamping bolt 20 jib dunnages

30 body 31 blocked holes

32 fastener hole 40 grooves

The 31a macropore 31b of section inserted part

311 straight sided 312 bases

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.

As shown in Figure 3.As an aspect of the present utility model, a kind of bearing pin clamp 3 is provided, this bearing pin clamp 3 comprises body 30, be provided with fastener hole 32 on this body 30, wherein, also be formed with blocked hole 31 on this body 30, blocked hole 31 comprises the macropore 31a of section and inserted part 31b, the profile of inserted part 31b is surrounded by two relative straight sided 311 and the base 312 that is connected between these two straight sided 311, the 31a of macropore section connects at the top of inserted part 31b and with this inserted part 31b, and the maximum diameter of the bearing pin that the macropore 31a of section can hold is greater than the distance between two straight sided 311.

When utilizing bearing pin clamp described in the utility model 3 fixed pin shaft, need to process two grooves on bearing pin, these two grooves are symmetrical arranged.Bearing pin passes the macropore 31a of section, then mobile bearing pin clamp 3, bearing pin is entered in the 31b of inserted part, two straight sided 311 of the blocked hole 31 of bearing pin clamp 3 are positioned at groove, base 312 leans against on bearing pin, then utilize clamping bolt to pass fastener hole 32 bearing pin clamp 3 is fixed on in two parts that bearing pin connects one, thereby can prevent that bearing pin from rotating and play.Owing to being symmetrically arranged with two grooves on bearing pin, so the bearing pin internal stress distribution is relatively even, can prevent that bearing pin from producing inhomogeneous distortion.

As shown in Fig. 3 and Fig. 4, preferably, base 312 is circular arc, and the radius on described base 312 is identical with the radius of the macropore 31a of section.When utilizing bearing pin clamp described in the utility model 3 fixed pin shaft, the base 312 of inserted part 31b can be fitted on the external peripheral surface of bearing pin, thus fixed pin shaft more firmly.

At the both sides of bearing pin fixed pin shaft, at this moment, a fastener hole 32 only need be set can be fixing with bearing pin clamp 3 due to inserted part 31b.As shown in Fig. 3 and Fig. 4, fastener hole 32 is one, utilizes the clamping bolt pass this fastener hole 32 bearing pin clamp 3 can be fixed on in two parts that described bearing pin connects one.The number that reduces clamping bolt is conducive to disassembling and assembling pin shaft clamp 3 easily.

as another aspect of the present utility model, as shown in Figures 4 and 5, a kind of hinging structure also is provided, this hinging structure comprises first component 1, second component 2, with this first component 1 and the hinged bearing pin 4 of second component 2, bearing pin clamp 3 and clamping bolt 5, wherein, bearing pin clamp 3 is above-mentioned bearing pin clamp provided by the utility model, be provided with two grooves 40 on the circumferential surface of at least one end of bearing pin 4, each groove 40 has two sidewalls and a diapire, and the diapire of two grooves 40 (as shown in Fig. 6 and Fig. 7) parallel to each other, two straight sided 311 of the inserted part 31b of described bearing pin clamp 3 lay respectively in two grooves 40, clamping bolt 5 passes fastener hole 32 bearing pin clamp 3 is fixed on first component 1 or second component 2.

As noted before, when utilizing bearing pin clamp 3 fixed pin shaft 4, at first bearing pin 4 is passed the macropore 31a of section, then mobile bearing pin clamp 3, enter in the 31b of inserted part bearing pin 4.At this moment, two straight sided 311 of the inserted part 31b of bearing pin clamp 3 enter in groove 40, and the base 312 of inserted part 31b leans against on bearing pin, utilizes clamping bolt 5 to pass fastener hole 32, thereby bearing pin clamp 3 is fixed on first component 1 or second component 2.In the mode of execution shown in Fig. 4 and Fig. 5, bearing pin clamp 3 is fixed on second component 2.

When utilizing bearing pin clamp described in the utility model 3 fixed pin shaft 4, be symmetrical arranged two groove 40(as shown in Figure 7 on bearing pin 4), two straight sided 311 of the blocked hole 31 on bearing pin clamp 3 are connected in two grooves 40, can prevent that bearing pin 4 from circumferentially rotating or axial float.Owing to being symmetrical arranged two grooves 40 on bearing pin 4, thus can be so that bearing pin 4 internal stress distribution be relatively even, and make bearing pin 4 distortion evenly.

Hinging structure described in the utility model can be applied to various occasions.For example, hinging structure described in the utility model can be used for the engineering machinery such as concrete mixer.At this moment, first component 1 can be the piston rod of piston cylinder, can be the jib supporting element by second component 2.As shown in Figure 5, this jib supporting element comprises the jib dunnage 20 that is oppositely arranged, and described first component 1 is hinged between the described jib dunnage 20 that is oppositely arranged by described bearing pin 4.

Bearing pin clamp 3 coordinate with bearing pin 4 and be fixed on jib dunnage 20 after can prevent that bearing pin 4 from circumferentially rotating and axial float.

In the utility model, can bearing pin clamp 3 be set at an end of bearing pin 4, also can bearing pin clamp 3 all be set at the two ends of bearing pin 4.

Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.

Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.

In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims

1. bearing pin clamp, this bearing pin clamp comprises body (30), be provided with fastener hole (32) on this body, it is characterized in that, also be formed with blocked hole (31) on described body (30), described blocked hole (31) comprises macropore section (31a) and inserted part (31b), the profile of this inserted part (31b) is surrounded by relative two straight sided (311) and the base (312) that is connected between these two straight sided (311), described macropore section (31a) is at the top of described inserted part (31b) and connect with this inserted part (31b), the maximum diameter of the bearing pin that described macropore section (31a) can hold is greater than the distance between described two straight sided (311).

2. bearing pin clamp according to claim 1, is characterized in that, described base (312) are circular arc, and the radius of described base (312) is identical with the radius of described macropore section (31a).

3. bearing pin clamp according to claim 1 and 2, is characterized in that, described fastener hole (32) is one.

4. hinging structure, this hinging structure comprises first component (1), second component (2), with this first component (1) and the hinged bearing pin (4) of second component (2), bearing pin clamp (3) and clamping bolt (5), it is characterized in that, described bearing pin clamp (3) is the described bearing pin clamp of any one in claims 1 to 3, be provided with two grooves (40) on the circumferential surface of at least one end of described bearing pin (4), each groove (40) has two sidewalls and a diapire, and the diapire of described two grooves (40) is parallel to each other, described two straight sided (311) of the described inserted part (31b) of described bearing pin clamp (3) lay respectively in described two grooves (40), described clamping bolt (5) passes described fastener hole (32) described bearing pin clamp (3) is fixed on described first component (1) or described second component (2).

5. hinging structure according to claim 4, it is characterized in that, described first component (1) is the piston rod of piston cylinder, described second component (2) is the jib supporting element, this jib supporting element comprises the jib dunnage (20) that is oppositely arranged, and described first component (1) is hinged between the described jib dunnage (20) that is oppositely arranged by described bearing pin (4).

6. hinging structure according to claim 5, is characterized in that, the two ends of described bearing pin (4) are provided with described bearing pin clamp (3).