CN202129346U

CN202129346U - Independent fixing structure for rear axle rack punch

Info

Publication number: CN202129346U
Application number: CN201120195870U
Authority: CN
Inventors: 孙文娟; 马栋柱; 曹韵牧; 李浩峰
Original assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Current assignee: Shanghai Huizhong Automotive Manufacturing Co Ltd
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2012-02-01
Anticipated expiration: 2021-06-10

Abstract

The utility model provides an independent fixing structure for a rear axle rack punch, the independent fixing structure can guarantee good positioning precision of a punch after multi-time replacing of a punch, comprises a punch and a fixing base, the fixing base is provided with a fixing hole for insertion of the punch, and also comprises a fastening ball head, the external side of the punch is provided with a ball locking groove, the side wall of the fixing hole is provided with a ball head accommodating chamber, the fastening ball head can be movably accommodated in the ball head accommodating chamber in an upper-lower direction, when the fastening ball head is located at the bottom of the ball head accommodating chamber, the fastening ball head is completely disposed in the ball head accommodating chamber instead of partly penetrating in the fixing hole, when the fastening ball head is located at the upper part of the ball head accommodating chamber, the fastening ball head partly penetrates into the fixing hole; the fixing base is provided with a needle retreating groove, the needle retreating groove is located at the upper part of the fastening ball head, the needle retreating groove extends from the upper surface of the fixing base to the ball head accommodating chamber, a bulkhead fastening piece is inserted in the lower surface of the fixing base, the end part of the bulkhead fastening piece is provided with an elastic piece, the elastic piece is padded at the lower part and supports the fastening ball head at the upper part, and the fastening ball head is partially embedded in the ball locking groove of the punch.

Description

Back axle crane span structure drift stand alone type fixed structure

Technical field

The utility model relates to the drift fixed structure.

Background technology

As shown in Figure 1, drift 3 is a consumable accessory, needs often to change.The operating procedure of each installing/dismounting is: during installation, elder generation is fit into holder 2 with drift 3, and is by fixed screw 1 that holder 2 and mould bases is fastening, utilizes the Stability Analysis of Structures drift 3 of holder 2 simultaneously; During dismounting, remove fixed screw 1, again drift 3 is removed from holder 2, change drift 3 backs and install.Because it is higher that drift is changed frequency, be prone to produce accumulated error and wearing and tearing, so that cause the hole positioning accuracy of drift poor.

The utility model content

The purpose of the utility model is to provide back axle crane span structure drift stand alone type fixed structure, and is good with the positioning accuracy that guarantees drift.

For realizing the back axle crane span structure drift stand alone type fixed structure of said purpose, comprise drift and holder, holder provides fixing hole and supplies drift to insert; Holder is fixed on the mould bases, it is characterized in that, also comprises quick-changing mechanism; Quick-changing mechanism comprises fastening bulb; There is the ball locked groove of indent in the outside of drift, and the sidewall of fixing hole has the bulb container cavity, and fastening bulb can be accommodated in the bulb container cavity up and downly; The bottom that fastening bulb is arranged in the bulb container cavity then is positioned at the bulb container cavity fully and can partly stretch at fixing hole, and the then fastening bulb in top that fastening bulb is positioned at the bulb container cavity partly stretches at fixing hole; Holder is provided with withdraw of the needle groove, and withdraw of the needle groove is positioned at the top of fastening bulb, and withdraw of the needle groove extends to the bulb container cavity from the upper surface of holder, and a stiff rod can stretch into from withdraw of the needle groove; Be equipped with silently securing member from the lower surface of holder; Silently the end of securing member is provided with elastic component; The elastic component pad withstands on the top of bulb container cavity below fastening bulb and with fastening bulb, fastening bulb partly is embedded in the ball locked groove of the drift that is arranged in fixing hole, locks drift with this.

During installation drift is directly packed into from the top of fixing hole, in the loading procedure, drift can press down fastening bulb, and after the ball locked groove was aimed at fastening bulb, is in place, fastening bulb got into the ball locked groove automatically under the effect of elastic component, and upwards drift is locked; During dismounting: insert from withdraw of the needle groove top with a stiff rod, fastening bulb is pressed, it is external that fastening bulb withdraws from punch structure through the ball locked groove, and this moment, drift was in no stationary state, can easily drift be taken out from holder.

Description of drawings

Fig. 1 is the sketch map of existing back axle crane span structure drift stand alone type fixed structure.

Fig. 2 is the sketch map of the back axle crane span structure drift stand alone type fixed structure of the utility model.

Fig. 3 is the sketch map of drift.

Fig. 4 is the sketch map of quick-changing mechanism.

The specific embodiment

To shown in Figure 4, back axle crane span structure drift stand alone type fixed structure comprises drift 5, holder 4, the quick-changing mechanism 6 with ball locked groove 8 like Fig. 2.Holder 4 is fixed on the mould bases through screw 7.Drift 5 is by 9 location of the fixing hole in the holder 4, and the sidewall of fixing hole 9 has bulb container cavity (not demonstrating in the drawings).Quick-changing mechanism comprises fastening bulb 11, silently screw 12 and elastic component 13; Fastening bulb 11 can be accommodated in the bulb container cavity up and downly; Fastening bulb 11 is to be positioned at the bulb container cavity fully and can partly not stretch at fixing hole 9 when being arranged in the bottom of bulb container cavity; When fastening bulb 11 was positioned at the top of bulb container cavity, fastening bulb 11 parts stretched in fixing hole 9.Holder 4 is provided with withdraw of the needle groove 10, and withdraw of the needle groove 10 is positioned at the top of fastening bulb 11, and withdraw of the needle groove 10 extends to the bulb container cavity from the upper surface of holder 4, and a stiff rod can stretch into from withdraw of the needle groove 10, to promote the fastening bulb 11 in the bulb container cavity.Wear into screw 12 silently from the lower surface of holder 4, silently the end of screw 12 is provided with elastic component 13, and elastic component 13 pads withstand on fastening bulb 11 top of bulb container cavity on fastening bulb 11.

As shown in Figure 3, the outside of drift 5 is formed with the ball locked groove 8 of indent, and is as shown in Figure 2, and fastening bulb 11 is partly embedded in the ball locked groove 8 of the drift that is arranged in fixing hole 9, locks drift 5 with this.

The operation principle of back axle crane span structure drift stand alone type fixed structure as shown in the figure:

Holder 4 is no longer torn open through screw 7 and mould bases extended immobilization; Drift 5 is a consumable accessory, needs often to change.The operating procedure of each assembling and disassembling is: during installation drift 5 is directly packed into from the top of fixing hole 9; In the loading procedure; Drift 5 can press down fastening bulb 11, aims at fastening bulb 11 up to ball locked groove 8, after being in place; Fastening bulb 11 gets into ball locked groove 8 automatically under the effect of elastic component 13, and upwards with drift 5 lockings; During dismounting: insert from withdraw of the needle groove 10 tops with a stiff rod, fastening bulb 11 is pressed, fastening bulb 11 withdraws from outside drift 5 structures through ball locked groove 8, and this moment, drift 5 was in no stationary state, can easily drift 5 be taken out from holder 4.

Claims

1. back axle crane span structure drift stand alone type fixed structure comprises drift and holder, and holder provides fixing hole and supplies drift to insert; Holder is fixed on the mould bases, it is characterized in that, also comprises quick-changing mechanism; Quick-changing mechanism comprises fastening bulb; There is the ball locked groove of indent in the outside of drift, and the sidewall of fixing hole has the bulb container cavity, and fastening bulb can be accommodated in the bulb container cavity up and downly; The bottom that fastening bulb is arranged in the bulb container cavity then is positioned at the bulb container cavity fully and can partly stretch at fixing hole, and the then fastening bulb in top that fastening bulb is positioned at the bulb container cavity partly stretches at fixing hole; Holder is provided with withdraw of the needle groove, and withdraw of the needle groove is positioned at the top of fastening bulb, and withdraw of the needle groove extends to the bulb container cavity from the upper surface of holder, and a stiff rod can stretch into from withdraw of the needle groove; Be equipped with silently securing member from the lower surface of holder; Silently the end of securing member is provided with elastic component; The elastic component pad withstands on the top of bulb container cavity below fastening bulb and with fastening bulb, fastening bulb partly is embedded in the ball locked groove of the drift that is arranged in fixing hole, locks drift with this.