CN201224614Y

CN201224614Y - Chain tension means

Info

Publication number: CN201224614Y
Application number: CNU2008200744986U
Authority: CN
Inventors: 郭瑞兴; 赵鹏
Original assignee: Tianjin Seri Machinery Equipment Corp Ltd
Current assignee: Tianjin Seri Machinery Equipment Corp Ltd
Priority date: 2008-04-23
Filing date: 2008-04-23
Publication date: 2009-04-22
Anticipated expiration: 2018-04-23

Abstract

The utility model relates to a chain tensioning device, which comprises a front cross beam and a rear cross beam, and is characterized in that: the front cross beam and the rear cross beam are located by a sprocket wheel spindle positioned in the middle of the front cross beam and the rear cross beam and rotating shafts at both ends thereof, wherein, a driven chain wheel is arranged on the sprocket wheel spindle by an axle sleeve, the rotating shaft positioned at the right side of the front cross beam and the rear cross beam is disposed on a shaft bracket, the shaft bracket is fixedly arranged on a support combined with a foundation, a through hole is arranged on the rotating shaft positioned at the left side of the front cross beam and the rear cross beam in the direction of the vertical shaft diameter, a hinge screw is inserted into the through hole, the lower end of the hinge screw is articulated on the support through a pin shaft, the support is fixedly arranged on the foundation, an elastic element is sleeved on the hinge screw, and the elastic element is pressed on the upper end of the rotating shaft by nuts. The chain tensioning device adopting the structure can bear rather big pre-tightening force, and stabilize the running of the whole device, additionally, the utility model also has the advantages of simple structure, convenient mounting and demounting, long service life and safety and reliability.

Description

Chain stretching device

Technical field

The utility model belongs to the caterpillar elevater technical field, particularly relates to a kind of chain stretching device that is used on the caterpillar elevater.

Background technology

At present, use caterpillar elevater that tube rolling is carried out material loading in some tube rolling factories, the easy generation in the slack list of chain is acutely beated when material loading, in order to reduce beating of chain slack list, usually increase a protection chain rail and reduce chain beating in the running, adopt this mode to cause the variation of the width between centers generating period between drive sprocket and the driven sprocket, and be not a definite value, so just influence the service life of the chain and the sprocket wheel of gig, and then influence work efficiency.In addition, also adopting increases a tension wheel at the driven sprocket place, adjusts the tensioning of chain by tension wheel, this complex structure, installing/dismounting inconvenience, and strengthened productive costs.

Summary of the invention

The utility model provides a kind of simple in structure, safe and reliable and chain stretching device of increasing the service life for solving the technical matters that exists in the known technology.

The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is:

A kind of chain stretching device, comprise front cross rail and after cross member, it is characterized in that: described front cross rail and after cross member are by being positioned at the rotating shaft location at middle sprocket wheel mandrel of front cross rail and after cross member and two ends, by axle sleeve driven sprocket is installed on its middle sprocket mandrel, the described rotating shaft that is positioned at front cross rail and after cross member right side is contained on the pedestal, pedestal be packed in ground on the support that closes, vertical diameter of axle direction has through hole in the described rotating shaft that is positioned at front cross rail and after cross member left side, the through hole interpolation screw rod that hinges, the lower end of hinge screw rod is hinged on the bearing by bearing pin, bearing is packed on the ground, suit elastic element on the hinge screw rod, elastic element is pressed on the rotating shaft upper end by nut.

The utility model can also adopt following technical measures:

The elastic element of suit is a belleville spring on the described hinge screw rod.

The band cover nut that shields also is housed on the described hinge screw rod.

Advantage and the good effect that the utlity model has are: because front cross rail and after cross member are by being positioned at the rotating shaft location at middle sprocket wheel mandrel of front cross rail and after cross member and two ends, make front cross rail and after cross member be in a vacant state by the support of front cross rail and after cross member right-hand member and the hinge screw rod of left end, the driven sprocket that is contained in like this on the sprocket wheel mandrel is in quick condition, when operation, absorb the tensile force of chain by the belleville spring of suit on the hinge screw rod, driven sprocket can be fluctuated, the effect of the existing transmission of driven sprocket like this, the effect that can adjust chain tension is arranged again, adopt the said structure driven sprocket can bear bigger predetermincd tension, make the entire equipment smooth running, the utility model also has simple in structure in addition, easy installation and removal and can increasing the service life and advantage such as safe and reliable.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is an A-A cutaway view among Fig. 1;

Fig. 4 is a B-B cutaway view among Fig. 1;

Fig. 5 is a C-C cutaway view among Fig. 1.

Among the figure: 1, front cross rail; 2, after cross member; 3, sprocket wheel mandrel; 4, rotating shaft; 5, axle sleeve; 6, driven sprocket; 7, pedestal; 8, support; 9, through hole; 10, hinge screw rod; 11, bearing pin; 12, bearing; 13, belleville spring; 14, band cap nut; 15, ground; 16, nut; 17, baffle plate; 18, bolt.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1-Fig. 5; front cross rail 1 and after cross member 2 are by being positioned at the sprocket wheel mandrel 3 in the middle of front cross rail 1 and the after cross member 2 and rotating shaft 4 location at two ends; rotating shaft 4 and sprocket wheel mandrel 3 two ends are fastening by baffle plate 17 and bolt 18; by axle sleeve 5 driven sprocket 6 is installed on its middle sprocket mandrel 3; the described rotating shaft 4 that is positioned at front cross rail 1 and after cross member 2 right sides is contained on the pedestal 7; pedestal 7 be packed in ground 15 on the supports 8 that close; vertical diameter of axle direction has through hole 9 in the described rotating shaft 4 that is positioned at front cross rail 1 and after cross member 2 left sides; the through hole 9 interpolations screw rod 10 that hinges; the lower end of hinge screw rod 10 is hinged on the bearing 12 by bearing pin 11; bearing 12 is packed on the ground 15; suit elastic element on hinge screw rod 10; elastic element is a belleville spring 13 in the present embodiment; belleville spring 13 is pressed on rotating shaft 4 upper ends by nut 16, and the band cover nut 14 that shields also is housed on hinge screw rod 10.

Said structure makes front cross rail 11 and after cross member 2 be in a vacant state by the support 8 of front cross rail 1 and after cross member 2 right-hand members and the hinge screw rod 10 of left end, the driven sprocket 6 that is contained in like this on the sprocket wheel mandrel 3 is in quick condition, when operation, absorb the tensile force of chain by the belleville spring 13 of suit on the hinge screw rod 10, driven sprocket 6 can be fluctuated, the effect of driven sprocket 6 existing transmissions like this, the effect that can adjust chain tension is arranged again, adopt said structure driven sprocket 6 can bear bigger predetermincd tension, make entire equipment operate steadily, the utility model also has simple in structure in addition, easy installation and removal and can increasing the service life and advantage such as safe and reliable.

Claims

1. chain stretching device, comprise front cross rail and after cross member, it is characterized in that: described front cross rail and after cross member are by being positioned at the rotating shaft location at middle sprocket wheel mandrel of front cross rail and after cross member and two ends, by axle sleeve driven sprocket is installed on its middle sprocket mandrel, the described rotating shaft that is positioned at front cross rail and after cross member right side is contained on the pedestal, pedestal be packed in ground on the support that closes, vertical diameter of axle direction has through hole in the described rotating shaft that is positioned at front cross rail and after cross member left side, the through hole interpolation screw rod that hinges, the lower end of hinge screw rod is hinged on the bearing by bearing pin, bearing is packed on the ground, suit elastic element on the hinge screw rod, elastic element is pressed on the rotating shaft upper end by nut.

2. chain stretching device according to claim 1 is characterized in that: the elastic element of suit is a belleville spring on the described hinge screw rod.

3. chain stretching device according to claim 1 is characterized in that: the band cover nut that shields also is housed on the described hinge screw rod.