CN202492334U

CN202492334U - Support arm of lifting machine

Info

Publication number: CN202492334U
Application number: CN2012201174365U
Authority: CN
Inventors: 孙序
Original assignee: SHANGHAI TIANT AUTOMOTIVE MAINTENANCE EQUIPMENT CO Ltd
Current assignee: SHANGHAI TIANT AUTOMOTIVE MAINTENANCE EQUIPMENT CO Ltd
Priority date: 2012-03-26
Filing date: 2012-03-26
Publication date: 2012-10-17
Anticipated expiration: 2022-03-26

Abstract

The utility model discloses a support arm of a lifting machine. The support arm of the lifting machine comprises an inner pipe, an outer pipe, an upper locating block and a lower locating block. The outer pipe and the inner pipe are mutually nested, the inner pipe is a telescopic pipe, the inner pipe extends out of the outer pipe or retracts into the outer pipe, and the inner diameter of the outer pipe is larger than the outer diameter of the inner pipe. The upper locating block is fixed at the top of the inner wall of the outer pipe, and the upper locating block is in contact with the top of the outer wall of the inner pipe. The lower locating block is fixed at the bottom of the inner wall of the outer pipe, and the lower locating block is in contact with the bottom of the outer wall of the inner pipe. According to the support arm of the lifting machine, the upper and lower locating blocks are added between the inner pipe and the outer pipe, so that the inner pipe can obtain sufficient support when the inner pipe extends, the inclining of the inner pipe is difficult to occur, and the stability control over the support arm is facilitated.

Description

The trailing arm of lifting machine

Technical field

The utility model relates to lifting machine field, relates in particular to a kind of trailing arm that is used for twin columns or four post lifting machines.

Background technology

In automobile maintenance industry, the lifting machine is most important docking facility, and modal in the lifting machine be exactly double-column lifter.The effect of double-column lifter is that automobile is lifted, so that the domain of automobile, tire etc. are carried out inspection and maintenance.The lifting of double-column lifter drives gliding mass by oil cylinder through chain and realize that trailing arm is installed, and car stand is located on the trailing arm on gliding mass, and trailing arm is followed gliding mass oscilaltion together.Trailing arm is made up of interior pipe and outer tube usually, and interior pipe is a telescopic pipe, when not using in pipe be contracted in outer tube inside, in use in pipe stretch out outer tube.Interior pipe and outer tube all are square tube usually.

For freely stretch of pipe in realizing, the size of managing in usually can than outer tube do smaller.Fig. 1 has disclosed the section drawing of the trailing arm that uses in the prior art.In pipe 104 size littler than outer tube 102, between interior pipe 104 and outer tube 102, leave the space altogether in the flexible use of pipe.So design has also brought some problems, and in use, interior pipe 104 stretches out outside the outer tube 102, and automobile mainly is to manage in being placed on 104, and when bearing vehicle weight, interior pipe 104 meeting natures are downward-sloping, as shown in Figure 2.At this moment, owing to have the gap between interior pipe 104 and the outer tube 102, interior pipe 104 all may tilt in the scope in gap.The quantity of the trailing arm of common queen post lifting machine can be four, and the angle of inclination of the interior pipe of four trailing arms may be different, and the plane of lifting of the automobile that this just causes is actually irregular, causes height uneven easily.The phenomenon of height inequality is all brought adverse influence for the subsequent job and the safety of lifting machine.

The utility model content

The utility model is intended to propose a kind ofly can increase trailing arm, especially in the trailing arm structure of pipe stability.

According to an embodiment of the utility model, a kind of trailing arm of lifting machine is proposed, comprising: interior pipe, outer tube, last locating piece and following locating piece.Outer tube and interior pipe are nested against one another, and interior pipe is a telescopic pipe, and interior pipe extends outside the outer tube or shrinks within the outer tube, and the internal diameter of outer tube is greater than the external diameter of interior pipe.Last locating piece is fixed on the top of the inwall of outer tube, and last locating piece contacts with the top of the outer wall of interior pipe.Following locating piece is fixed on the bottom of the inwall of outer tube, and following locating piece contacts with the bottom of the outer wall of interior pipe.

In one embodiment, interior pipe and outer tube all are square tubes.

In one embodiment, interior pipe stretches out outside the outer tube, and locating piece is installed in the position of interior pipe afterbody.Distance between the roof of the thickness of last locating piece and the roof of outer tube and interior pipe equates.

In one embodiment, following locating piece is installed in the front end of outer tube.Distance between the diapire of the thickness of following locating piece and the diapire of outer tube and interior pipe equates.

The trailing arm of the lifting machine of the utility model increases locating piece up and down between interior pipe and outer tube, pipe can obtain enough supports in making when extending, and is difficult for run-off the straight, helps the Stability Control of trailing arm.

Description of drawings

Fig. 1 has disclosed the section drawing of the trailing arm of lifting machine of the prior art.

Fig. 2 has disclosed the running condition figure of the trailing arm of lifting machine of the prior art.

Fig. 3 has disclosed the cross section structure figure according to the trailing arm of the lifting machine of an embodiment of the utility model.

The specific embodiment

With reference to shown in Figure 3, the utility model proposes a kind of trailing arm of lifting machine.As shown in Figure 3, this trailing arm 200 comprises: outer tube 202, interior pipe 204, last locating piece 206 and following locating piece 208.

Outer tube 202 is mutually nested with interior pipe 204.In one embodiment, interior pipe 204 all is a square tube with outer tube 202.Interior pipe 204 is telescopic pipes, and interior pipe 204 extends outside the outer tube 202 or shrinks within the outer tube 202, and the internal diameter of outer tube 202 is greater than the external diameter of interior pipe 204.Last locating piece 206 is fixed on the top of the inwall of outer tube 202, and for square tube, the top of outer tube wall is exactly the inboard of the roof of outer tube 202.Last locating piece 206 contacts with the top of the outer wall of interior pipe 204.For square tube, the top of outer wall of inner tube is exactly the outside of the roof of interior pipe 204.Following locating piece 208 is fixed on the bottom of the inwall of outer tube 202.For square tube, the bottom of outer tube wall is exactly the inboard of the diapire of outer tube 202.Following locating piece 208 contacts with the bottom of the outer wall of interior pipe 204.For square tube, the bottom of outer wall of inner tube is exactly the outside of the diapire of interior pipe 204.

Continue with reference to shown in Figure 3, the installation site of last locating piece 206 and following locating piece 208 is following: when pipe 204 stretched out outside the outer tube 202 in upward locating piece 206 was installed in, and the position at the afterbody place of interior pipe 204.Like this, the afterbody of pipe 204 was upturned in last locating piece 206 can effectively prevent.Following locating piece 208 is installed in the front end of outer tube 202, and when interior pipe 204 stretched out outside the outer tube 202, following locating piece 208 managed 204 in supported underneath, and pipe 204 sinks in preventing.When pipe 204 was outside stretching out outer tube 202 in last locating piece 206 prevented with following locating piece 208 jointly the bevelled situation appears, to guarantee the resistance to overturning of trailing arm.In one embodiment, the distance between the roof of the thickness of last locating piece 206 and outer tube 202 and the roof of interior pipe 204 equates, goes up locating piece 206 like this and is embedded in just between outer tube 202 and the interior pipe 204.Distance between the diapire of the thickness of following locating piece 208 and outer tube 202 and the diapire of interior pipe 204 equates that following locating piece 208 also is embedded between outer tube 202 and the interior pipe 204 just.

Claims

1. the trailing arm of a lifting machine is characterized in that, comprising:

Outer tube nested against one another and interior pipe, said interior pipe is a telescopic pipe, and interior pipe extends outside the outer tube or shrinks within the outer tube, and the internal diameter of outer tube is greater than the external diameter of interior pipe;

Last locating piece is fixed on the top of the inwall of outer tube, and last locating piece contacts with the top of the outer wall of interior pipe;

Following locating piece is fixed on the bottom of the inwall of outer tube, and following locating piece contacts with the bottom of the outer wall of interior pipe.

2. the trailing arm of lifting machine as claimed in claim 1 is characterized in that, said interior pipe and outer tube all are square tubes.

3. the trailing arm of lifting machine as claimed in claim 2 is characterized in that, interior pipe stretches out outside the outer tube, and the said locating piece of going up is installed in the position of interior pipe afterbody.

4. the trailing arm of lifting machine as claimed in claim 2 is characterized in that, the distance between the roof of the said thickness of going up locating piece and outer tube and the roof of interior pipe equates.

5. the trailing arm of lifting machine as claimed in claim 2 is characterized in that, said locating piece down is installed in the front end of outer tube.

6. the trailing arm of lifting machine as claimed in claim 2 is characterized in that, the distance between the diapire of the thickness of said down locating piece and the diapire of outer tube and interior pipe equates.