CN215861318U

CN215861318U - Guide rail stable in operation

Info

Publication number: CN215861318U
Application number: CN202121683674.8U
Authority: CN
Inventors: 沈永斌; 吴勇; 郑荣伟; 李靖; 陈秀
Original assignee: Zhejiang Hengda Guide Profile Technology Co ltd
Current assignee: Zhejiang Yuxuan Steel Technology Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-02-18
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a guide rail which runs stably, and the guide rail comprises a horizontal adjusting mechanism, a vertical adjusting mechanism and a buffering mechanism, wherein the horizontal adjusting mechanism comprises a rail, a second fixing plate, a second bolt and a third bolt, the rail is connected with a first sliding block in a sliding mode, the first sliding block is connected with a guide shaft in a sliding mode, the second fixing plate is fixedly connected with the rail, the second fixing plate is fixedly connected with the guide shaft, the second bolt is in threaded connection with the rail, and the third bolt is in threaded connection with the second bolt. The position of the guide shaft is finely adjusted by screwing the third bolt, and the position of the first sliding block is adjusted in the horizontal direction of the track by adjusting the position of the guide shaft, so that the first sliding block is ensured to slide along the track along a straight line.

Description

Guide rail stable in operation

Technical Field

The utility model relates to the field of guide rails, in particular to a guide rail which runs stably.

Background

The guide rail is a groove or ridge made of metal or other materials, a device capable of bearing, fixing, guiding and reducing friction of a moving device or equipment, a longitudinal groove or ridge on the surface of the guide rail is used for guiding and fixing machine parts, special equipment, instruments and the like, the guide rail is also called a slide rail, a linear guide rail and a linear slide rail, is used for the occasion of linear reciprocating motion and has higher rated load than a linear bearing,

meanwhile, the device can bear certain torque, and can realize high-precision linear motion under the condition of high load.

The guide rail is in the use, because long-time use can be because wearing and tearing, precision reduces when leading to guide rail sliding displacement, and traditional guide rail lacks the regulation measure, can't adjust the precision decline that wearing and tearing lead to, and most guide rail lacks the buffer measure moreover, and the guide rail can cause whole life to descend because of assaulting in the use. Therefore, a guide rail which runs smoothly is provided for the above problems.

SUMMERY OF THE UTILITY MODEL

The guide rail which runs stably is provided in the embodiment and is used for solving the problems that in the prior art, the precision cannot be adjusted due to the fact that the guide rail is lack of adjusting measures, and the service life is reduced due to the fact that a buffering mechanism is lack.

According to one aspect of the utility model, the guide rail which runs stably is provided, and comprises a horizontal adjusting mechanism, a vertical adjusting mechanism and a buffering mechanism, wherein the horizontal adjusting mechanism comprises a rail, a second fixing plate, a second bolt and a third bolt, the rail is connected with a first sliding block in a sliding manner, the first sliding block is connected with a guide shaft in a sliding manner, the second fixing plate is fixedly connected with the rail, the second fixing plate is fixedly connected with the guide shaft, the second bolt is in threaded connection with the rail, and the third bolt is in threaded connection with the second bolt;

the vertical adjusting mechanism comprises a sliding chute, a first fixing plate and a first bolt, the sliding chute is fixedly connected with the track and is in sliding connection with a second sliding block, the first fixing plate is fixedly connected with the surface of the track, the first bolt is in threaded connection with the first fixing plate, the first bolt is in rotating connection with a first connector, and the first connector is fixedly connected with the second sliding block;

buffer gear includes dead lever, telescopic link, spring and fixed slot, dead lever and slider fixed connection No. one, telescopic link one end and No. two fixed plate fixed connection, and telescopic link one end and connecting plate fixed connection No. one, spring one end and No. two fixed plate fixed connection, and the spring other end and connecting plate fixed connection No. one, fixed slot and No. two fixed plate fixed connection, and fixed slot and No. two spring one end fixed connection, and No. two spring other ends and No. two connecting plate fixed connection, No. two connecting plates slide with the fixed slot, and No. two connecting plate surfaces and shock-absorbing rubber pad fixed connection.

Furthermore, two guide shafts are arranged on the surface of the second fixing plate, and the two guide shafts are symmetrically distributed on the surface of the second fixing plate.

Further, the surface of the track is provided with a plurality of second bolts, and the second bolts are uniformly distributed on the surface of the track.

Furthermore, No. three bolts are located No. two bolt central points and put, and No. three bolts run through No. two bolts and are connected with No. two connectors rotation, No. two connectors and guiding axle fixed connection.

Furthermore, the surface of the track is provided with two sliding grooves, the two sliding grooves are symmetrically distributed on the surface of the track, and two second sliding blocks are respectively arranged in the two sliding grooves.

Furthermore, the surface of the track is provided with four first fixing plates, and the four first fixing plates are distributed on the surface of the track in a rectangular mode.

Further, a connector is located inside No. two sliders, a bolt and No. two slider sliding connection, No. two connectors are located inside the guiding axle, No. three bolts and guiding axle sliding connection.

Furthermore, two fixing rods are arranged on the surface of the first sliding block and are symmetrically distributed on the surface of the first sliding block.

Furthermore, the fixed rod is connected with the fixed groove in an inserting mode through a through hole, and a through hole is formed in the surface of the first connecting plate.

Further, No. two fixed plate surfaces are provided with a plurality of telescopic links, and are a plurality of telescopic link evenly distributed is on No. two fixed plate surfaces, and the telescopic link is located inside the spring.

According to the embodiment of the utility model, the precision reduction caused by the abrasion of the guide rail in the horizontal direction is adjusted through the horizontal adjusting mechanism, the precision of the guide rail is ensured, the precision reduction caused by the abrasion of the guide rail in the vertical direction is adjusted through the vertical adjusting mechanism, the precision of the guide rail is ensured, the guide rail is protected in the use process of the guide rail through the buffer mechanism, and the service life of the guide rail is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic overall perspective view of an embodiment of the present invention;

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

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2 according to an embodiment of the present invention;

fig. 4 is a schematic overall cross-sectional structure of an embodiment of the present invention.

In the figure: 1. the track, 2, slider, 3, the guiding axle, 4, the spout, 5, No. two sliders, 6, a fixed plate, 7, a bolt, 8, a connecting plate, 9, No. two fixed plates, 10, No. two bolts, 11, No. three bolts, 12, the dead lever, 13, the telescopic link, 14, the spring, 15, the through-hole, 16, the fixed slot, 17, No. two springs, 18, No. two connecting plates, 19, the shock-absorbing rubber pad, 20, a connector, 21, No. two connectors.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The buffer mechanism in the present embodiment can be applied to various guide rails, for example, the following linear drive guide rail is provided in the present embodiment, and the buffer mechanism in the present embodiment can be used to protect the guide rail.

A linear driving guide rail comprises a guide rail seat, a driving end and a driven end, wherein the driving end and the driven end are fixed at two ends of the guide rail seat, a linear guide rail is fixed on the guide rail seat, and the length of the linear guide rail is longer than that of the guide rail seat, so that after the linear guide rail is fixed on the guide rail seat, two end parts of the linear guide rail are arranged outside the guide rail seat. The linear guide rail comprises an integrated rail beam and rails positioned on two sides of the rail beam, and a sliding assembly is connected with the rails in a sliding manner. The driving end and the driven end are connected with a synchronous belt, one half of the synchronous belt penetrates through the guide rail seat, and two ends of the synchronous belt are clamped, pressed and fixed through the synchronous belt on the sliding assembly. The sliding assembly further comprises a pulley, a containing groove is formed in the bottom of the pulley, six idler wheels are arranged in the containing groove and located on two sides of the rail beam respectively, the number of the idler wheels is three, the idler wheels are connected with the pulley in a rolling mode through rotating shafts, the rails on two sides of the rail beam are embedded in wheel grooves formed in the idler wheels, and the pulley slides left and right through rolling of the idler wheels on the rails. Two lubricating assemblies are arranged on the front end face and the rear end face of the pulley and are symmetrically arranged on two sides of the linear guide rail respectively. Every lubricated subassembly includes a fixing base, and the fixing base is L shape, has seted up the oil filler point with the oil filler point intercommunication in seted up in the fixing base on the lateral wall of fixing base, installs elastic component and felt in the oil filler point. One end of the felt is abutted against the elastic piece, and the other end of the felt is arranged outside the oil filling groove. The fixed slot that is used for installing the fixing base is all offered to the front and back terminal surface of coaster, and the fixing base passes through the fastener to be installed in the fixed slot. After the lubricating component is fixed, the end face of the felt is firmly abutted against the rail through the action of the elastic component, and in order to better realize that the felt and the rail are matched with each other, the shape of the end face of the felt is matched with the shape of the outer surface of the rail. The linear guide is fixed with the guide rail seat through a plurality of fasteners, the vertical protrusion at the upper surface of the guide rail seat is provided with the installation block, a strip groove is formed in the surface of the linear guide matched with the installation block, the strip groove is formed along the length direction of the linear guide, the two sides of the strip groove are correspondingly formed into a first butt surface and a second butt surface which are the same in width, the first butt surface and the second butt surface are abutted to the upper surface of the installation block, and the projection of the first butt surface and the second butt surface completely falls into the upper surface of the installation block. The bottom surface of guide rail seat still is fixed with two bed hedgehopping pieces, and wherein the bottom surface of guide rail seat has seted up two logical grooves along length direction, and two lead to groove along the vertical central plane symmetrical arrangement of guide rail seat, at every logical inslot embedded a plurality of nuts that are equipped with, bed hedgehopping piece realizes through a plurality of fasteners and the nut threaded connection of wearing to establish with the fixed of guide rail seat. The upper end surface and the lower end surface of the block are parallel to the upper surface and the lower surface of the linear guide rail. The driving end comprises a driving cover, a driving seat and a driving wheel, a driving groove is formed in the driving seat, the driving wheel is contained in the driving groove, the driving cover and the driving seat are mutually fixed through a plurality of fasteners, and the driving cover is also fixed with the guide rail seat through a plurality of fasteners, so that the guide rail seat is fixed with the whole driving end. The driving cover is provided with a yielding groove, the left side wall and the right side wall of the yielding groove are provided with guide grooves communicated with the yielding groove, the shape of the groove surface of each guide groove is identical to that of the outer surface of the corresponding rail, and the upper side and the lower side of each guide groove are provided with positioning blocks. The driven end comprises a driven cover, a driven seat and a driven wheel, the driven wheel is contained in a driven groove of the driven seat, the structural shapes of the driven cover and the driven seat are the same as those of the driving cover and the driving seat, and the fixing modes of the driven cover and the driven seat and the fixing modes of the driven end and the guide rail seat are the same as those of the driving end. Be provided with two bolster on the terminal surface of drive lid, the bolster is located the both sides in the groove of stepping down respectively, and every bolster all includes the buffer block of being made by elastic material, for example by rubber, silica gel etc. to and through vulcanizing fixed screw rod with the buffer block, the screw rod passes through threaded connection with the drive lid and fixes, and same mode also is provided with the bolster on the driven lid. One end of the linear guide rail is arranged in the abdicating groove of the driving cover, the rail is just embedded in the guide groove, and the end faces of the positioning blocks at the upper side and the lower side of the guide groove are abutted against the side wall of the rail beam. The other end of the same linear guide is fixedly retained in the driven cover in the same manner. The guide rail is a groove or ridge made of metal or other materials, can bear, fix and guide a moving device or equipment and reduce the friction of the moving device or equipment, the longitudinal groove or ridge on the surface of the guide rail is used for guiding and fixing machine parts, special equipment, instruments and the like, the guide rail is also called a slide rail, a linear guide rail and a linear slide rail, is used for the linear reciprocating motion occasion, has higher rated load than a linear bearing, can bear certain torque at the same time, can realize high-precision linear motion under the condition of high load,

of course, the present embodiment may also be used to provide other guide rails with matching services. No further details are given here, and a description will be given below of an adjustable guide rail that operates smoothly according to an embodiment of the present invention.

Referring to fig. 1-4, a guide rail which runs stably comprises a horizontal adjusting mechanism, a vertical adjusting mechanism and a buffering mechanism, wherein the horizontal adjusting mechanism comprises a rail 1, a second fixing plate 9, a second bolt 10 and a third bolt 11, the rail 1 is slidably connected with a first sliding block 2, the first sliding block 2 is slidably connected with a guide shaft 3, the second fixing plate 9 is fixedly connected with the rail 1, the second fixing plate 9 is fixedly connected with the guide shaft 3, the second bolt 10 is in threaded connection with the rail 1, and the third bolt 11 is in threaded connection with the second bolt 10;

the vertical adjusting mechanism comprises a sliding chute 4, a first fixing plate 6 and a first bolt 7, the sliding chute 4 is fixedly connected with the track 1, the sliding chute 4 is in sliding connection with the second sliding block 5, the first fixing plate 6 is fixedly connected with the surface of the track 1, the first bolt 7 is in threaded connection with the first fixing plate 6, the first bolt 7 is rotatably connected with a first connector 20, and the first connector 20 is fixedly connected with the second sliding block 5;

the buffer mechanism comprises a fixed rod 12, a telescopic rod 13, a spring 14 and a fixed groove 16, the fixed rod 12 is fixedly connected with a first sliding block 2, one end of the telescopic rod 13 is fixedly connected with a second fixed plate 9, one end of the telescopic rod 13 is fixedly connected with a first connecting plate 8, one end of the spring 14 is fixedly connected with the second fixed plate 9, the other end of the spring 14 is fixedly connected with the first connecting plate 8, the fixed groove 16 is fixedly connected with the second fixed plate 9, the fixed groove 16 is fixedly connected with one end of a second spring 17, the other end of the second spring 17 is fixedly connected with a second connecting plate 18, the second connecting plate 18 slides with the fixed groove 16, the surface of the second connecting plate 18 is fixedly connected with a damping rubber pad 19, the precision reduction caused by the abrasion of the horizontal direction of the guide rail is adjusted through a horizontal adjusting mechanism, the precision of the guide rail is ensured, and the precision reduction caused by the abrasion of the vertical direction is adjusted through a vertical adjusting mechanism, the precision of the guide rail is guaranteed, the guide rail is protected in the using process of the guide rail through the buffer mechanism, and the service life of the guide rail is prolonged.

The surface of the second fixing plate 9 is provided with two guide shafts 3, the two guide shafts 3 are symmetrically distributed on the surface of the second fixing plate 9, the sliding precision of the first sliding block 2 in the track 1 is improved through the two guide shafts 3, the surface of the track 1 is provided with a plurality of second bolts 10, the second bolts 10 are uniformly distributed on the surface of the track 1, the third bolt 11 is positioned at the central position of the second bolt 10, the third bolt 11 penetrates through the second bolt 10 to be rotatably connected with the second connector 21, the second connector 21 is fixedly connected with the guide shafts 3, the position of the guide shafts 3 can be accurately adjusted through the plurality of third bolts 11, the surface of the track 1 is provided with two sliding grooves 4, the two sliding grooves 4 are symmetrically distributed on the surface of the track 1, the two sliding blocks 5 are respectively arranged in the two sliding grooves 4, the surface of the track 1 is provided with four first fixing plates 6, four fixed plate 6 is the rectangular distribution on track 1 surface, No. one connector 20 is located No. two inside the slider 5, No. one bolt 7 and No. two 5 sliding connection of slider, No. two connector 21 is located guiding axle 3 insidely, No. three bolt 11 and guiding axle 3 sliding connection, No. 2 surfaces of slider are provided with two dead levers 12, two 12 symmetric distribution of dead lever are on No. one 2 surfaces of slider, dead lever 12 is pegged graft through-hole 15 and fixed slot 16, No. one 8 surfaces of connecting plate are provided with through-hole 15, No. two 9 surfaces of fixed plate are provided with a plurality of telescopic links 13, and are a plurality of 13 evenly distributed of telescopic link is on No. two 9 surfaces of fixed plate, and telescopic link 13 is located inside spring 14.

When the utility model is used, when a first sliding block 2 slides along a track 1, when the sliding speed is too high, the first sliding block 2 collides with a second fixing plate 9, a first connecting plate 8 is arranged between the second fixing plate 9 and the first sliding block 2, when the sliding speed of the first sliding block 2 is too high, the first sliding block 2 firstly collides with the surface of the first connecting plate 8, the first connecting plate 8 compresses a telescopic rod 13 and a spring 14 for buffering, the first sliding block 2 is protected, meanwhile, a second connecting head 21 is inserted into a fixed groove 16, a damping rubber pad 19 and a second connecting plate 18 are pushed to compress a second spring 17, the damping rubber pad 19 and the second spring 17 absorb the impact force, the first sliding block 2 is fully buffered and protected, and the sliding between the first sliding block 2 and the track 1 in the using process can cause abrasion due to long-time adaptation, so that the linear sliding precision of the first sliding block 2 along the track 1 is reduced, move bolt 7 through twisting, drive a fixed plate 6 through bolt 7 and rise or descend along bolt 7, drive slider 2 through fixed plate 6 and adjust at the inside vertical direction position of track 1, guarantee slider 2 remain stable when sliding, finely tune the position of guiding axle 3 through twisting No. three bolts 11, carry out position control to slider 2 at track 1's horizontal direction through the position of adjustment guiding axle 3, guarantee that slider 2 slides along the straight line along track 1.

The utility model has the advantages that:

1. the first sliding block collides with the second fixing plate when the sliding speed is too high when the first sliding block slides along the track, the first connecting plate is arranged between the second fixing plate and the first sliding block, when the sliding speed of the first sliding block is too high, the surface of the first connecting plate is firstly impacted, the first connecting plate compresses the telescopic rod and the spring for buffering, the first sliding block is protected, meanwhile, the second connecting head is inserted into the fixed groove, the damping rubber pad and the second connecting plate are pushed to press the second spring, the damping rubber pad and the second spring absorb the impact force, the first sliding block is fully buffered and protected, and the service life of the whole body is prolonged;

2. the sliding mechanism has a vertical direction adjusting measure, abrasion can be caused due to long-time adaptation when the sliding mechanism slides between the first sliding block and the track in the using process, the sliding precision of the first sliding block along the track is reduced, the first bolt is screwed, the first fixing plate is driven to ascend or descend along the first bolt through the first bolt, the first sliding block is driven to adjust the vertical direction position in the track through the first fixing plate, the first sliding block is guaranteed to be stable in sliding, and the sliding precision is improved.

3.2. The sliding block I sliding mechanism has a horizontal direction adjusting measure, the position of the guide shaft is finely adjusted by screwing the third bolt, the position of the sliding block I is adjusted in the horizontal direction of the track by adjusting the position of the guide shaft, the sliding block I is ensured to slide along the track in a straight line, and the sliding precision is improved.

It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A guide rail capable of running stably is characterized in that: the horizontal adjusting mechanism comprises a track (1), a second fixing plate (9), a second bolt (10) and a third bolt (11), the track (1) is in sliding connection with a first sliding block (2), the first sliding block (2) is in sliding connection with a guide shaft (3), the second fixing plate (9) is fixedly connected with the track (1), the second fixing plate (9) is fixedly connected with the guide shaft (3), the second bolt (10) is in threaded connection with the track (1), and the third bolt (11) is in threaded connection with the second bolt (10);

the vertical adjusting mechanism comprises a sliding groove (4), a first fixing plate (6) and a first bolt (7), the sliding groove (4) is fixedly connected with the track (1), the sliding groove (4) is slidably connected with a second sliding block (5), the first fixing plate (6) is fixedly connected with the surface of the track (1), the first bolt (7) is in threaded connection with the first fixing plate (6), the first bolt (7) is rotatably connected with a first connector (20), and the first connector (20) is fixedly connected with the second sliding block (5);

the buffer mechanism comprises a fixed rod (12), a telescopic rod (13), a spring (14) and a fixed groove (16), the fixed rod (12) is fixedly connected with the first sliding block (2), one end of the telescopic rod (13) is fixedly connected with the second fixed plate (9), one end of the telescopic rod (13) is fixedly connected with the first connecting plate (8), one end of the spring (14) is fixedly connected with the second fixing plate (9), the other end of the spring (14) is fixedly connected with the first connecting plate (8), the fixed groove (16) is fixedly connected with the second fixed plate (9), the fixed groove (16) is fixedly connected with one end of a second spring (17), the other end of the second spring (17) is fixedly connected with a second connecting plate (18), the second connecting plate (18) slides with the fixed groove (16), and the surface of the second connecting plate (18) is fixedly connected with a damping rubber pad (19).

2. A track as claimed in claim 1, wherein: two guide shafts (3) are arranged on the surface of the second fixing plate (9), and the two guide shafts (3) are symmetrically distributed on the surface of the second fixing plate (9).

3. A track as claimed in claim 1, wherein: a plurality of second bolts (10) are arranged on the surface of the track (1), and the second bolts (10) are uniformly distributed on the surface of the track (1).

4. A track as claimed in claim 1, wherein: no. three bolt (11) are located No. two bolt (10) central point and put, and No. three bolt (11) run through No. two bolt (10) and rotate with No. two connector (21) and be connected, No. two connector (21) and guiding axle (3) fixed connection.

5. A track as claimed in claim 1, wherein: the surface of the track (1) is provided with two sliding chutes (4), the two sliding chutes (4) are symmetrically distributed on the surface of the track (1), and two sliding blocks (5) are respectively arranged in the two sliding chutes (4).

6. A track as claimed in claim 1, wherein: the surface of the track (1) is provided with four first fixing plates (6), and the four first fixing plates (6) are distributed on the surface of the track (1) in a rectangular mode.

7. A track according to claim 4 wherein: a connector (20) is located inside No. two sliders (5), a bolt (7) and No. two sliders (5) sliding connection, No. two connectors (21) are located inside guiding shaft (3), No. three bolt (11) and guiding shaft (3) sliding connection.

8. A track as claimed in claim 1, wherein: the surface of the first sliding block (2) is provided with two fixing rods (12), and the two fixing rods (12) are symmetrically distributed on the surface of the first sliding block (2).

9. A track as claimed in claim 1, wherein: the fixing rod (12) is connected with the fixing groove (16) in an inserting mode through a through hole (15), and the surface of the first connecting plate (8) is provided with the through hole (15).

10. A track as claimed in claim 1, wherein: no. two fixed plate (9) surfaces are provided with a plurality of telescopic links (13), and are a plurality of telescopic link (13) evenly distributed is on No. two fixed plate (9) surfaces, and telescopic link (13) are located inside spring (14).