CN214822727U

CN214822727U - Telescopic joint structure and rail device

Info

Publication number: CN214822727U
Application number: CN202121268124.XU
Authority: CN
Inventors: 晏勇
Original assignee: Sichuan Klt Carbide Co ltd
Current assignee: Sichuan Klt Carbide Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-11-23
Anticipated expiration: 2031-06-08

Abstract

The embodiment of the utility model provides a telescopic joint design and rail set relates to track traffic technical field, this telescopic joint design includes first connector, second connector and director, first connector is connected with first guide rail, first guide rail is provided with first working surface, be provided with third working surface on the first connector, the second connector is connected with the second guide rail, the second guide rail is provided with second working surface, form between second connector and the first connector and reserve the clearance, be provided with fourth working surface on the second connector, first connector and second connector simultaneously with director sliding fit. The rail device comprises the telescopic joint structure. The telescopic joint structure and the track device can ensure that the conditions of jolting, jumping, impact and the like can not occur in the running process of the fluid, the running process of the fluid is ensured to be smoother and more stable, and the generated noise is correspondingly lower.

Description

Telescopic joint structure and rail device

Technical Field

The utility model relates to a track traffic technical field particularly, relates to a telescopic joint design and rail set.

Background

In the field of rail transit, contact rails (also called conductor rails and power supply rails) for rigid contact networks are of aluminum alloy base bodies, and the current-donating surfaces of the contact rails are provided with wear-resistant layers. Because of the large thermal expansion coefficient of aluminum alloy, the full-line contact rail is usually divided into a plurality of sections (commonly called "anchor sections") with certain lengths, and a gap for changing the freedom degree of the contact rail due to the long expansion caused by heat and contraction caused by cold is arranged between each anchor section. The part at the gap is generally called as an expansion telescopic head, and the function of the expansion telescopic head is to meet the requirements of expansion with heat and contraction with cold of the rail body within a certain temperature range through reasonable structure and change of a telescopic gap, ensure that the current collector sliding block smoothly passes through the working surface of the current collector sliding block and keep normal conduction of current between anchor sections.

In the prior art, due to the joint structure, the situation that the working surface acted by the fluid in the joint structure is not coplanar with the working surface of the guide rail can occur, so that the fluid is easy to jolt when passing through the joint structure, the operation is unstable, and great noise is generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic joint design and rail set, it can improve aforementioned technical problem effectively.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a telescopic joint design for connect first guide rail and second guide rail, first guide rail is provided with the first working surface that supplies to receive the fluid effect, the second guide rail is provided with the confession receive the second working surface of fluid effect, telescopic joint design includes:

the first connecting body is connected with the first guide rail, and a third working surface acted by fluid is arranged on the first connecting body;

the second connecting body is used for being connected with the second guide rail, a reserved gap is formed between the second connecting body and the first connecting body, and a fourth working surface acted by fluid is arranged on the second connecting body;

the first connecting body and the second connecting body are simultaneously in sliding fit with the guide body, and the guide body is used for guiding the first connecting body and the second connecting body to move along the length direction of the first guide rail or the second guide rail so as to enable the first working surface, the second working surface, the third working surface and the fourth working surface to be coplanar;

wherein the reserved gap is increased or decreased in a process that the first connecting body and the second connecting body move along the length direction of the first guide rail or the second guide rail.

In an optional embodiment, the telescopic joint structure further includes a first adjusting body and a second adjusting body, the first adjusting body is provided with a fifth working surface for receiving the fluid, the first adjusting body is simultaneously in sliding fit with the upper side wall of the first connecting body and the upper side wall of the second connecting body, the second adjusting body is provided with a sixth working surface for receiving the fluid, the second adjusting body is simultaneously in sliding fit with the lower side wall of the first connecting body and the lower side wall of the second connecting body, and the first adjusting body and the second adjusting body are simultaneously in sliding fit with the guiding body, the guiding body is used for guiding the first adjusting body and the second adjusting body to move along the width direction of the first guide rail or the second guide rail, so that the fifth working surface, the sixth working surface, The third working surface and the fourth working surface are always coplanar.

In an alternative embodiment, the upper sidewall of the first connection body is provided with a first inclined surface, the upper sidewall of the second connection body is provided with a second inclined surface, the second inclined plane is arranged symmetrically to the first inclined plane, the first adjusting body is provided with a third inclined plane and a fourth inclined plane, the third inclined plane and the fourth inclined plane are symmetrically arranged, the third inclined plane is in sliding fit with the first inclined plane, the fourth inclined surface is in sliding fit with the second inclined surface, the first connecting body and the second connecting body are used for moving along the length direction of the first guide rail or the second guide rail, the first adjusting body is driven to move along the width direction of the first guide rail or the second guide rail through the matching between the first inclined surface and the third inclined surface and the matching between the second inclined surface and the fourth inclined surface; and/or the lower side wall of the first connecting body is provided with a fifth inclined surface, the lower side wall of the second connecting body is provided with a sixth inclined surface, the fifth inclined plane and the sixth inclined plane are symmetrically arranged, the second adjusting body is provided with a seventh inclined plane and an eighth inclined plane, the seventh inclined surface and the eighth inclined surface are symmetrically arranged, the seventh inclined surface and the fifth inclined surface are in sliding fit, the eighth inclined surface is in sliding fit with the sixth inclined surface, the first connecting body and the second connecting body are used in the process of moving along the length direction of the first guide rail or the second guide rail, and the second adjusting body is driven to move along the width direction of the first guide rail or the second guide rail through the matching between the fifth inclined surface and the seventh inclined surface and the matching between the sixth inclined surface and the eighth inclined surface.

In an optional embodiment, the first inclined plane is concavely provided with a first guide groove, the second inclined plane is concavely provided with a second guide groove, the third inclined plane is convexly provided with a first guide strip, the fourth inclined plane is convexly provided with a second guide strip, the first guide strip is in sliding fit with the first guide groove, and the second guide strip is in sliding fit with the second guide groove; and/or, the fifth inclined plane is concavely provided with a third guide groove, the sixth inclined plane is concavely provided with a fourth guide groove, the seventh inclined plane is convexly provided with a third guide strip, the eighth inclined plane is convexly provided with a fourth guide strip, the third guide strip is in sliding fit with the third guide groove, and the fourth guide strip is in sliding fit with the fourth guide groove.

In an alternative embodiment, the telescopic joint arrangement further comprises a connecting rod, a first spring and a second spring, the first adjusting body is provided with a first counter sink, a first step wall is arranged in the first counter sink, a second counter bore is arranged on the second adjusting body, a second step wall is arranged in the second counter bore, the connecting rod simultaneously passes through the first counter sink and the second counter sink, a first abutting wall and a second abutting wall are respectively arranged at two ends of the connecting rod, the first spring and the second spring are sleeved on the connecting rod at the same time, the first spring is clamped on the first abutting wall, and is abutted against the first step wall, the second spring is clamped on the second abutting wall and is abutted against the second step wall, the first spring and the second spring are used for returning the first adjusting body and the second adjusting body to initial positions.

In an optional embodiment, a first clamping block is disposed on one side of the guide body close to the first adjusting body, a first clamping groove is concavely disposed on one side of the first adjusting body close to the guide body, the first clamping groove is in sliding fit with the first clamping block along the width direction of the first guide rail or the second guide rail, and the first clamping block is used for limiting the first adjusting body and the guide body to move along the length direction of the first guide rail or the second guide rail;

and/or, the director is close to second regulation body one side is provided with the second fixture block, the second regulation body is close to the concave second draw-in groove that is equipped with in one side of director, the second draw-in groove is followed first guide rail or the width direction of second guide rail with the sliding fit of second fixture block, just the second fixture block is used for the restriction the second regulation body with the director is followed first guide rail or the length direction of second guide rail removes.

In an optional embodiment, the telescopic joint structure further includes a first conductive strap and a second conductive strap, the first conductive strap is connected to the guiding body and the first connecting body at the same time, and the second conductive strap is connected to the guiding body and the second connecting body at the same time.

In a second aspect, the present invention provides a track device, which comprises a first guide rail, a second guide rail and any one of the above-mentioned embodiments, wherein the first connecting body is kept away from one end of the second connecting body connected to the first guide rail, and the second connecting body is kept away from one end of the first connecting body connected to the second guide rail.

In an optional embodiment, the rail device further includes a first wedge block, the first connecting body includes a first connecting portion, a second connecting portion, and a third connecting portion, the first connecting portion, the second connecting portion, and the third connecting portion are sequentially connected to form a Z-shaped structure, the first connecting portion is spaced from the first guide rail, the first wedge block is slidably disposed between the first connecting portion and the first guide rail in a cushioning manner, the second connecting portion abuts against an end of the first guide rail, and the third connecting portion is provided with a third working surface; and/or, the rail set still includes the second wedge, the second connector includes fourth connecting portion, fifth connecting portion and sixth connecting portion, the fourth connecting portion the fifth connecting portion and sixth connecting portion connect gradually and form Z shape structure, the fourth connecting portion with the second guide rail interval sets up, just second wedge slidable ground pad establishes the fourth connecting portion with between the second guide rail, the fifth connecting portion with the tip butt of first guide rail, the sixth connecting portion are provided with the fourth working surface.

In an optional embodiment, the rail device further includes a first mounting block and a first fastener, the first mounting block is embedded in the first guide rail, and the first fastener is simultaneously connected with the first mounting block and the first connecting portion, so that the first mounting block, the first connecting portion and the first guide rail are relatively fixed; and/or, the rail device further comprises a second mounting block and a second fastener, the second mounting block is embedded into the second guide rail, and the second fastener is simultaneously connected with the second mounting block and the fourth connecting part, so that the second mounting block, the fourth connecting part and the second guide rail are relatively fixed.

The utility model discloses beneficial effect includes, for example:

the embodiment of the utility model provides a telescopic joint structure, which can be connected with a first guide rail and a second guide rail, wherein the first guide rail is provided with a first working surface acted by fluid, the second guide rail is provided with a second working surface acted by fluid, this telescopic joint design includes first connector, second connector and director, first connector is connected with first guide rail, be provided with the third working surface that supplies to receive the fluid effect on the first connector, the second connector is connected with the second guide rail, form between second connector and the first connector and reserve the clearance, be provided with the fourth working surface that supplies to receive the fluid effect on the second connector, first connector and second connector simultaneously with director sliding fit, the director can guide the length direction removal of first connector and second connector along first guide rail or second guide rail. It can be understood that, when the telescopic joint structure is subjected to the effects of thermal expansion and cold contraction, the first connecting body and the second connecting body can be relatively close to or far away from each other, and the reserved gap can provide an avoidance space for the expansion amount of the first connecting body and the second connecting body. In addition, due to the guiding effect of the guiding body, even if the first connecting body and the second connecting body move relatively, the first connecting body and the second connecting body move along the length direction of the first guide rail or the second guide rail, so that the first working surface, the second working surface, the third working surface and the fourth working surface can be always coplanar, the conditions of jolting, jumping, impacting and the like can be guaranteed to be avoided in the process of passing through the first guide rail, the first connecting body, the second connecting body and the second guide rail by fluid, the operation process is smoother and more stable, and the generated noise is correspondingly lower.

The embodiment of the utility model provides a still provide a rail set, this rail set includes aforementioned telescopic joint design to possess whole functions of this telescopic joint design. The rail device can ensure that the conditions of jolting, jumping, impact and the like can not occur in the running process of the fluid, the running process of the fluid is ensured to be more smooth and stable, and the generated noise is correspondingly lower.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a track device according to an embodiment of the present invention at a first viewing angle;

fig. 2 is an exploded schematic view of a track set according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first connecting body and a second connecting body provided in an embodiment of the present invention at a first viewing angle;

fig. 4 is a schematic structural diagram of a first wedge block according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a rail device according to an embodiment of the present invention at a second viewing angle;

fig. 6 is a schematic structural diagram of a guide body according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of the first connecting body and the second connecting body provided in the embodiment of the present invention at a second viewing angle;

fig. 8 is a schematic structural diagram of a first adjustment body according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second adjustment body according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first fixture block according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of the connection rod, the first spring and the second spring according to the embodiment of the present invention;

fig. 12 is a cross-sectional view of a first adjustment body provided in an embodiment of the present invention;

fig. 13 is a cross-sectional view of a second adjustment body according to an embodiment of the present invention.

Icon: 1-a rail device; 11-a first guide rail; 111-a first working surface; 12-a second guide rail; 121-a second working surface; 13-a telescopic joint construction; 131-a first connector; 1311-a third working surface; 1312-a first connection; 1313-a second connection; 1314-a third connecting part; 1315 — a first guide projection; 1316-second guide projection; 1317-first inclined plane; 13171-first guide groove; 1318-fifth inclined plane; 13181-third guide groove; 132-a second connector; 1321-a fourth connection; 1322-a fifth connecting portion; 1323-a sixth connecting portion; 1324-a fourth working surface; 1325-a third guide projection; 1326-a fourth guide boss; 1327-a second inclined face; 13271-second guide groove; 1328-sixth inclined plane; 13281-fourth guide groove; 133-reserving a gap; 134-a guide body; 1341-a first chute; 1342-a second chute; 135-a first conductive strip; 136-a second conductive strip; 137-a third fastener; 138-a fourth fastener; 139-a fifth fastener; 140-a sixth fastener; 141-nylon cushion; 142-a first conditioning body; 1421-fifth work surface; 1422-third inclined plane; 14221 — first guide bar; 1423-fourth inclined plane; 14231 — second guide bar; 1424 — first card slot; 1425 — first counterbore; 1426 — first step wall; 143-a second regulating body; 1431-a sixth working surface; 1432-seventh inclined plane; 14321-a third guide strip; 1433-eighth inclined plane; 14331-fourth guide bar; 1434-a second card slot; 1435-second counterbore; 1436 — a second step wall; 15-a first wedge; 151-first strip holes; 16-a second wedge; 17-a first mounting block; 18-a second mounting block; 19-a first fastener; 20-a second fastener; 21-a first fixture block; 22-a second fixture block; 23-a connecting rod; 231-a first abutment wall; 232-a second abutment wall; 24-a first spring; 25-second spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a schematic structural diagram of a track device 1 provided in this embodiment in a first viewing angle. Fig. 2 is an exploded schematic view of the track device 1 according to the present embodiment. Referring to fig. 1 and 2, the track device 1 of the present embodiment includes a first rail 11, a second rail 12, and a telescopic joint structure 13, where the first rail 11 and the second rail 12 can be connected together by the telescopic joint structure 13, and a fluid can move on the first rail 11, the telescopic joint structure 13, and the second rail 12.

Specifically, referring to fig. 1 and 2, the first rail 11 is provided with a first working surface 111 acted by a fluid, the second rail 12 is provided with a second working surface 121 acted by the fluid, the telescopic joint structure 13 includes a first connecting body 131 and a second connecting body 132, the first connecting body 131 is connected with the first rail 11, the second connecting body 132 is connected with the second rail 12, the first connecting body 131 is provided with a third working surface 1311 acted by the fluid, and the second connecting body 132 is provided with a fourth working surface 1324 acted by the fluid. Generally, the fluid acts on the first working surface 111, the second working surface 121, the third working surface 1311 and the fourth working surface 1324 in sequence during the movement of the fluid on the track device 1.

Referring to fig. 1, in the present embodiment, a reserved gap 133 is formed between one side of the first connecting body 131 away from the first guide rail 11 and one side of the second connecting body 132 away from the second guide rail 12. When this telescopic joint design 13 receives the effect of expending with heat and contracting with cold, first connector 131 and second connector 132 can be close to relatively or keep away from, and this reserve clearance 133 can provide the space of dodging for the inflation volume of first connector 131 and second connector 132 to make first connector 131 or second connector 132 be difficult to because of the circumstances that bending deformation appears in mutual butt, guaranteed third working surface 1311 and fourth working surface 1324's roughness effectively.

Generally, after the first connection body 131 and the second connection body 132 expand by heat, the volume increases and the reserved gap 133 decreases. After the first connecting body 131 and the second connecting body 132 are cooled and retracted, the volume is reduced, and the reserved gap 133 is increased.

In addition, referring to fig. 1 and fig. 2, in an embodiment, the telescopic joint structure 13 further includes a guiding body 134, the first connecting body 131 and the second connecting body 132 are simultaneously in sliding fit with the guiding body 134, and under the guiding action of the guiding body 134, the first connecting body 131 and the second connecting body 132 are relatively close to or relatively far away from each other along the length direction of the first guide rail 11 or the second guide rail 12.

In the present embodiment, the first rail 11 and the second rail 12 are provided side by side, and the longitudinal direction of the first rail 11 and the longitudinal direction of the second rail 12 overlap each other. Specifically, in fig. 1, arrow a and arrow B may be understood as the lengthwise direction of the first rail 11 or the second rail 12.

It can be understood that, in the present embodiment, under the guiding action of the guiding body 134, the first connecting body 131 and the second connecting body 132 move along the length direction of the first guiding rail 11 or the second guiding rail 12 even though they move relatively, so that even if the first connecting body 131 and the second connecting body 132 move relatively, the first working surface 111, the second working surface 121, the third working surface 1311 and the fourth working surface 1324 can be ensured to be always coplanar, thereby ensuring that the fluid is not easy to bump, jump and bump in the process of passing through the first guiding rail 11, the first connecting body 131, the second connecting body 132 and the second guiding rail 12, the operation process is more smooth and stable, and the generated noise is correspondingly low.

Fig. 3 is a schematic structural diagram of the first connecting body 131 and the second connecting body 132 provided in this embodiment at a first viewing angle. Fig. 4 is a schematic structural diagram of the first wedge block 15 provided in this embodiment. Referring to fig. 1-4, in the present embodiment, the rail device 1 further includes a first wedge 15, the first connector 131 includes a first connection portion 1312, a second connection portion 1313, and a third connection portion 1314, the first connection portion 1312, the second connection portion 1313, and the third connection portion 1314 are sequentially connected to form a Z-shaped structure, the first connection portion 1312 is spaced apart from the first rail 11, the first wedge 15 is slidably disposed between the first connection portion 1312 and the first rail 11, the second connection portion 1313 abuts against an end of the first rail 11, and the third working surface 1311 is disposed on the third connection portion 1314.

It can be understood that, in the case that the first wedge block 15 is slidably disposed between the first connecting body 131 and the first rail 11, the position of the first rail 11 can be adjusted by sliding the first wedge block 15, and the first wedge block 15 is abutted against the first rail 11, so that the first working surface 111 of the first rail 11 is coplanar with the second working surface 121 of the second rail 12. In this way, the first wedge block 15 can achieve the purpose of making the first working surface 111 and the second working surface 121 coplanar by adjusting the position of the first rail 11, so that the fluid is not prone to bumping and colliding in the process of passing through the first working surface 111 and the second working surface 121, and the problem that the fluid is prone to generating abnormal noise in the process of passing through the first rail 11 and the second rail 12 is effectively solved.

Similarly, referring to fig. 1 to 4, in the present embodiment, the track device 1 further includes a second wedge block 16, a structure of the second wedge block 16 is the same as that of the first wedge block 15, and a specific structure of the second wedge block 16 may refer to the structure of the first wedge block 15 in fig. 4. The second connecting body 132 includes a fourth connecting portion 1321, a fifth connecting portion 1322 and a sixth connecting portion 1323, the fourth connecting portion 1321, the fifth connecting portion 1322 and the sixth connecting portion 1323 are sequentially connected to form a Z-shaped structure, the fourth connecting portion 1321 is spaced apart from the second rail 12, the second wedge 16 is slidably disposed between the fourth connecting portion 1321 and the second rail 12, the fifth connecting portion 1322 abuts against an end of the first rail 11, and the fourth working surface 1324 is disposed on the sixth connecting portion 1323.

It will be appreciated that, with the second wedge block 16 slidably disposed between the second connector 132 and the second rail 12, sliding the second wedge block 16 with the second wedge block 16 abutting against the second rail 12 can adjust the position of the second rail 12 such that the second working surface 121 of the second rail 12 is coplanar with the first working surface 111 of the first rail 11. In this way, the second wedge block 16 can achieve the purpose of making the first working surface 111 and the second working surface 121 coplanar by adjusting the position of the second rail 12, so that the fluid is not easy to bump and collide in the process of passing through the first working surface 111 and the second working surface 121, and the problem that the fluid is easy to generate abnormal noise in the process of passing through the first rail 11 and the second rail 12 is effectively improved.

Referring to fig. 1 to 3, in the present embodiment, the rail device 1 further includes a first mounting block 17 and a first fastening member 19, the first mounting block 17 is embedded in the first rail 11, and the first fastening member 19 is connected to the first mounting block 17 and the first connecting portion 1312, so that the first mounting block 17, the first connecting portion 1312, and the first rail 11 are fixed relatively, thereby fixing the first connecting body 131 on the first rail 11.

Referring to fig. 4, in this embodiment, a plurality of first bar-shaped holes 151 are formed in the first wedge-shaped block 15, the number of the first fastening members 19 is multiple, and the number of the first fastening members 19 is the same as the number of the first bar-shaped holes 151, and the first fastening members 19 correspond to the first bar-shaped holes 151 one by one. In this way, after the first fastening member 19 passes through the corresponding first slot 151, the first wedge block 15 can still slide relative to the first connecting body 131 and the first rail 11.

Similarly, referring to fig. 1-3, in the present embodiment, the track device 1 further includes a second mounting block 18 and a second fastening member 20, the second mounting block 18 is embedded in the second rail 12, and the second fastening member 20 is simultaneously connected to the second mounting block 18 and the fourth connecting portion 1321, so that the second mounting block 18, the fourth connecting portion 1321 and the second rail 12 are relatively fixed, thereby fixing the second connecting body 132 on the second rail 12.

Similarly, the second wedge block 16 is provided with a plurality of second strip-shaped holes (not shown in the figure), the number of the second fastening members 20 is multiple, and the number of the second fastening members 20 is the same as the number of the second strip-shaped holes, and the second fastening members 20 correspond to the second strip-shaped holes one by one. Thus, after the second fastener 20 passes through the corresponding second elongated hole, the second wedge 16 can still slide relative to the second connector 132 and the second rail 12.

Alternatively, the first and

second fastening members

19 and 20 may be bolts, screws, or the like.

Fig. 5 is a schematic structural diagram of the track device 1 provided in this embodiment under a second viewing angle. Referring to fig. 1, 2 and 5, the telescopic joint structure 13 further includes a first conductive band 135 and a second conductive band 136, the first conductive band 135 is connected to the guiding body 134 and the first connecting body 131, and the second conductive band 136 is connected to the guiding body 134 and the second connecting body 132. In this way, the current on the first rail 11 is transmitted to the second rail 12 through the first connecting body 131, the first conductive strip 135, the guiding body 134, the second conductive strip 136 and the second connecting body 132, and the first conductive strip 135 and the second conductive strip 136 can ensure the stability of current transmission, so that the power failure is not easy to occur.

It is understood that, in the present embodiment, the first connecting body 131, the guiding body 134, the second connecting body 132, the first guide rail 11 and the second guide rail 12 are all made of metal.

Optionally, the first conductive strip 135 and the second conductive strip 136 are both made of copper strips, so that the conductivity is high, the conductive effect is good, and the cost is low.

Optionally, the first conductive strap 135 and the second conductive strap 136 have certain flexibility, and therefore, in the process that the first connecting body 131 and the second connecting body 132 are relatively close to or far away from each other, the first conductive strap 135 and the second conductive strap 136 may stretch or contract to a certain extent, so that on the premise of ensuring current transmission, the process of thermal expansion and cold contraction of the first connecting body 131 and the second connecting body 132 is not affected.

Referring to fig. 2 and 5, in the present embodiment, the retractable joint structure 13 further includes a plurality of third fastening members 137, a plurality of fourth fastening members 138, a plurality of fifth fastening members 139, and a plurality of sixth fastening members 140, wherein the plurality of third fastening members 137 are simultaneously connected to the first conductive strap 135 and the first connecting body 131 to relatively fix the first conductive strap 135 and the first connecting body 131. The plurality of fourth fastening members 138 are simultaneously connected to the first conductive strip 135 and the guide body 134 to relatively fix the first conductive strip 135 and the guide body 134. A plurality of fifth fasteners 139 are simultaneously coupled to the second conductive strip 136 and the second connecting body 132 to relatively fix the second conductive strip 136 and the second connecting body 132. A plurality of sixth fasteners 140 are simultaneously connected to the second conductive strip 136 and the guide body 134 to relatively fix the second conductive strip 136 and the guide body 134.

Alternatively, the third fastener 137, the fourth fastener 138, the fifth fastener 139, and the sixth fastener 140 may be bolts, screws, or the like.

Fig. 6 is a schematic structural diagram of the guide body 134 provided in this embodiment. Fig. 7 is a schematic structural diagram of the first connecting body 131 and the second connecting body 132 provided in this embodiment at a second viewing angle. Referring to fig. 1, 3, 6 and 7, in the embodiment, the guide body 134 is provided with a first sliding slot 1341 and a second sliding slot 1342 which are opposite to each other, a length direction of the first sliding slot 1341 is parallel to a length direction of the second sliding slot 1342, the length directions of the first sliding slot 1341 and the second sliding slot 1342 are both the same as the length direction of the first guide rail 11 (the direction indicated by the arrow a and the arrow B in fig. 1), an upper side wall and a lower side wall of the first connecting body 131 are respectively provided with a first guide protrusion 1315 and a second guide protrusion 1316, and the first guide protrusion 1315 and the second guide protrusion 1316 are respectively in sliding fit with the first sliding slot 1341 and the second sliding slot 1342, so as to realize the sliding function of the first connecting body 131 along the length direction of the first guide rail 11. Similarly, the upper side wall and the lower side wall of the second connecting body 132 are respectively provided with a third guiding protrusion 1325 and a fourth guiding protrusion 1326, and the third guiding protrusion 1325 and the fourth guiding protrusion 1326 are respectively in sliding fit with the first sliding slot 1341 and the second sliding slot 1342, so that the second connecting body 132 slides along the length direction of the first guide rail 11.

Referring to fig. 3 and 7, in the present embodiment, the retractable joint structure 13 further includes a nylon pad 141, and the nylon pad 141 is sleeved on the first guiding protrusion 1315, the second guiding protrusion 1316, the third guiding protrusion 1325 and the fourth guiding protrusion 1326, and the friction resistance of the nylon pad 141 is small, so that the sliding process of the first connecting body 131 and the second connecting body 132 relative to the guiding body 134 is smoother. In addition, the nylon pad 141 can also reduce dust adhering to the contact surface between the first guide protrusion 1315 and the inner wall of the first chute 1341, the contact surface between the second guide protrusion 1316 and the inner wall of the second chute 1342, the contact surface between the third guide protrusion 1325 and the inner wall of the first chute 1341, and the contact surface between the fourth guide protrusion 1326 and the inner wall of the second chute 1342, so as to prevent the contact surfaces from being scratched by dust particles during sliding.

Fig. 8 is a schematic structural diagram of the first adjustment body 142 provided in this embodiment. Fig. 9 is a schematic structural diagram of the second adjustment body 143 provided in this embodiment. Referring to fig. 8 and 9 in combination with fig. 3 and 7, in this embodiment, the telescopic joint structure 13 further includes a first adjustment body 142 and a second adjustment body 143, the first adjustment body 142 is provided with a fifth working surface 1421 acted by a fluid, the first adjustment body 142 is simultaneously in sliding fit with the upper side wall of the first connection body 131 and the upper side wall of the second connection body 132, the second adjustment body 143 is provided with a sixth working surface 1431 acted by a fluid, the second adjustment body 143 is simultaneously in sliding fit with the lower side wall of the first connection body 131 and the lower side wall of the second connection body 132, and the first adjustment body 142 and the second adjustment body 143 are simultaneously in sliding fit with the guide body 134, so that under the guiding action of the guide body 134, the first adjustment body 142 and the second adjustment body 143 are relatively close to or far from each other along the width direction of the first guide rail 11 or the second guide rail 12.

It is understood that in the present embodiment, the fifth working surface 1421 and the sixth working surface 1431 can increase the area acted by the fluid, and improve the operation stability of the fluid.

In addition, with reference to fig. 1, the aforementioned reserved gap 133 is also formed between the first adjusting body 142 and the second adjusting body 143, when the telescopic joint structure 13 is subjected to the effects of thermal expansion and cold contraction, the first adjusting body 142 and the second adjusting body 143 may relatively approach or separate from each other, and the reserved gap 133 may provide an avoidance space for the expansion amount of the first adjusting body 142 and the second adjusting body 143, so that the first adjusting body 142 or the second adjusting body 143 is not easily abutted to each other to cause bending deformation, and the flatness of the fifth working surface 1421 and the sixth working surface 1431 is effectively ensured.

Under the guiding action of the guiding body 134, the first adjusting body 142 and the second adjusting body 143 move along the width direction of the first guide rail 11 or the second guide rail 12, so that the fifth working surface 1421, the sixth working surface 1431, the third working surface 1311 and the fourth working surface 1324 are always coplanar, thereby ensuring that the conditions of bumping, jumping, impacting and the like are not easy to occur in the process that fluid passes through the first guide rail 11, the first adjusting body 142, the second adjusting body 143 and the second guide rail 12, the operation process is smoother and more stable, and the generated noise is correspondingly low.

Note that, in fig. 1, arrow C and arrow D may be understood as the width direction of the first rail 11 or the second rail 12.

Referring to fig. 8 and 9 in combination with fig. 3 and 7, in the present embodiment, the upper side wall of the first connecting body 131 is provided with a first inclined surface 1317, the upper side wall of the second connecting body 132 is provided with a second inclined surface 1327, the second inclined surface 1327 is symmetrically arranged with the first inclined surface 1317, the first adjusting body 142 is provided with a third inclined surface 1422 and a fourth inclined surface 1423, the third inclined surface 1422 is symmetrically arranged with the fourth inclined surface 1423, the third inclined surface 1422 is slidably matched with the first inclined surface 1317, and the fourth inclined surface 1423 is slidably matched with the second inclined surface 1327.

In this way, during the process of moving the first connection body 131 and the second connection body 132 along the length direction of the first guide rail 11 or the second guide rail 12, the first adjustment body 142 can be driven to move along the width direction (the direction indicated by the arrow C and the arrow D in fig. 1) of the first guide rail 11 or the second guide rail 12 by the matching between the first inclined surface 1317 and the third inclined surface 1422 and the matching between the second inclined surface 1327 and the fourth inclined surface 1423.

It should be noted that, under the sliding fit action of the third inclined surface 1422 and the first inclined surface 1317 and the sliding fit action of the fourth inclined surface 1423 and the second inclined surface 1327, in the process that the first connecting body 131 and the second connecting body 132 are relatively close to or far away from each other, the top wall of the first connecting body 131, the top wall of the second connecting body 132, and the top wall of the first adjusting body 142 are always on the same plane, so that the boundary invasion situation is not generated, and the situation of mutual interference between the components is not easy to occur.

Similarly, referring to fig. 8 and 9 in combination with fig. 3 and 7, in the present embodiment, the lower sidewall of the first connecting body 131 is provided with a fifth inclined surface 1318, the lower sidewall of the second connecting body 132 is provided with a sixth inclined surface 1328, the fifth inclined surface 1318 and the sixth inclined surface 1328 are symmetrically arranged, the second adjusting body 143 is provided with a seventh inclined surface 1432 and an eighth inclined surface 1433, the seventh inclined surface 1432 and the eighth inclined surface 1433 are symmetrically arranged, the seventh inclined surface 1432 and the fifth inclined surface 1318 are slidably matched, and the eighth inclined surface 1433 and the sixth inclined surface 1328 are slidably matched.

In this way, during the movement of the first connection body 131 and the second connection body 132 along the length direction of the first guide rail 11 or the second guide rail 12, the second adjustment body 143 is moved along the width direction (the direction indicated by the arrows C and D in fig. 1) of the first guide rail 11 or the second guide rail 12 by the engagement between the fifth inclined surface 1318 and the seventh inclined surface 1432 and the engagement between the sixth inclined surface 1328 and the eighth inclined surface 1433.

It should be noted that, under the cooperation between the fifth inclined surface 1318 and the seventh inclined surface 1432 and the cooperation between the sixth inclined surface 1328 and the eighth inclined surface 1433, in the process that the first connecting body 131 and the second connecting body 132 are relatively close to or far away from each other, the bottom wall of the first connecting body 131, the bottom wall of the second connecting body 132, and the bottom wall of the second adjusting body 143 are always on the same plane, so that the boundary intrusion condition does not occur, and the mutual interference between the components is not easy to occur.

Referring to fig. 8 and 9 in combination with fig. 3 and 7, in the present embodiment, the first inclined surface 1317 is concavely provided with a first guide groove 13171, the second inclined surface 1327 is concavely provided with a second guide groove 13271, the third inclined surface 1422 is convexly provided with a first guide bar 14221, the fourth inclined surface 1423 is convexly provided with a second guide bar 14231, the first guide bar 14221 is slidably engaged with the first guide groove 13171, and the second guide bar 14231 is slidably engaged with the second guide groove 13271. In this way, the sliding fit relationship between the first guide bar 14221 and the first guide groove 13171 can guide the relative sliding between the first inclined surface 1317 and the third inclined surface 1422, and prevent the first inclined surface 1317 and the third inclined surface 1422 from being disengaged from each other. The sliding fit relationship between the second guiding strip 14231 and the second guiding groove 13271 can guide the relative sliding between the second inclined surface 1327 and the fourth inclined surface 1423, and avoid the relative separation between the second inclined surface 1327 and the fourth inclined surface 1423.

Similarly, referring to fig. 8 and 9 in combination with fig. 3 and 7, in the present embodiment, the fifth inclined surface 1318 is concavely provided with a third guide groove 13181, the sixth inclined surface 1328 is concavely provided with a fourth guide groove 13281, the seventh inclined surface 1432 is convexly provided with a third guide strip 14321, the eighth inclined surface 1433 is convexly provided with a fourth guide strip 14331, the third guide strip 14321 is in sliding fit with the third guide groove 13181, and the fourth guide strip 14331 is in sliding fit with the fourth guide groove 13281. In this way, the sliding fit relationship between the third guide strip 14321 and the third guide groove 13181 can guide the relative sliding between the fifth inclined surface 1318 and the seventh inclined surface 1432, and prevent the fifth inclined surface 1318 and the seventh inclined surface 1432 from being disengaged from each other. The sliding fit relationship between the fourth guide strip 14331 and the fourth guide slot 13281 can guide the relative sliding between the sixth inclined surface 1328 and the eighth inclined surface 1433, and avoid the relative disengagement between the sixth inclined surface 1328 and the eighth inclined surface 1433.

It should be noted that the nylon pads 141 are respectively clamped in the first guide slot 13171, the second guide slot 13271, the third guide slot 13181 and the fourth guide slot 13281, and here, the effect of the nylon pads 141 is similar to that of the nylon pads 141, and thus, the description thereof is omitted.

Fig. 10 is a schematic structural diagram of the first latch 21 provided in this embodiment. Referring to fig. 8 and fig. 10 in combination with fig. 2, in the present embodiment, a first block 21 is disposed on one side of the guide body 134 close to the first adjusting body 142, a first engaging groove 1424 is recessed on one side of the first adjusting body 142 close to the guide body 134, and the first engaging groove 1424 is in sliding fit with the first block 21 along the width direction of the first guide rail 11 or the second guide rail 12.

It can be understood that, in the present embodiment, the matching structure between the first latch 21 and the first latch recess 1424 can not only guide the first adjustment body 142 to move along the width direction of the first guide rail 11 (the direction indicated by the arrows C and D in fig. 1), but also can limit the first adjustment body 142 and the guide body 134 to move along the length direction of the first guide rail 11 (the direction indicated by the arrows a and B in fig. 1).

Referring to fig. 8 and 10 in combination with fig. 2, a second latch 22 is disposed on a side of the guide 134 close to the second adjusting body 143, a structure of the second latch 22 is the same as that of the first latch 21, and a structure of the second latch 22 can refer to that of the first latch 21 in fig. 10. A second locking groove 1434 is concavely arranged on one side of the second adjusting body 143 close to the guiding body 134, and the second locking groove 1434 is in sliding fit with the second locking block 22 along the width direction of the first guiding rail 11 or the second guiding rail 12.

It can be understood that, in the present embodiment, the fitting structure between the second latch 22 and the second latch groove 1434 can not only guide the second adjustment body 143 to move along the width direction of the first guide rail 11 (the direction indicated by the arrows C and D in fig. 1), but also can restrict the second adjustment body 143 and the guide body 134 to move along the length direction of the first guide rail 11 (the direction indicated by the arrows a and B in fig. 1).

Fig. 11 is a schematic structural diagram of the connection rod 23, the first spring 24, and the second spring 25 provided in this embodiment. Fig. 12 is a sectional view of the first adjustment body 142 provided in the present embodiment. Fig. 13 is a sectional view of the second adjustment body 143 according to the present embodiment. Referring to fig. 11-13 and fig. 2, in the present embodiment, the retractable joint structure 13 further includes a connecting rod 23, a first spring 24 and a second spring 25, a first counter bore 1425 is disposed on the first adjusting body 142, a first step wall 1426 is disposed in the first counter bore 1425, a second counter bore 1435 is disposed on the second adjusting body 143, a second step wall 1436 is disposed in the second counter bore 1435, the connecting rod 23 simultaneously passes through the first counter bore 1425 and the second counter bore 1435, a first abutting wall 231 and a second abutting wall 232 are respectively disposed at two ends of the connecting rod 23, the first spring 24 and the second spring 25 are simultaneously sleeved on the connecting rod 23, and the first spring 24 is clamped to the first abutting wall 231 and clamped to the first step wall 1426, and the second spring 25 is clamped to the second abutting wall 232 and abutted to the second step wall 1436.

In the present embodiment, in the process that the first adjustment body 142 and the second adjustment body 143 are relatively far away, the first step wall 1426 moves upward, the first step wall 1426 and the first abutting wall 231 simultaneously press the first spring 24, the first spring 24 is in a compressed state, the second step wall 1436 moves downward, the second step wall 1436 and the second abutting wall 232 simultaneously press the second spring 25, and the second spring 25 is in a compressed state. Thus, if the first adjustment body 142 and the second adjustment body 143 are relatively far away from each other under the action of the external force, when the external force disappears, the first adjustment body 142 and the second adjustment body 143 will be relatively close to each other under the action of the first spring 24 and the second spring 25 and return to the initial positions, so as to avoid that the size of the reserved gap 133 is too large and the stability of the movement of the fluid is affected.

In conclusion, this embodiment provides a telescopic joint design 13 and track device 1, and this telescopic joint design 13 and track device 1 can guarantee to receive the fluid operation in-process difficult emergence jolt, jump empty, the circumstances such as impact, guarantee to receive the operation process of fluid more smooth stable, the noise of production is also corresponding lower.

The above description is only exemplary 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 telescopic joint construction for connecting a first guide rail (11) and a second guide rail (12), the first guide rail (11) being provided with a first working surface (111) for being acted on by a fluid, the second guide rail (12) being provided with a second working surface (121) for being acted on by a fluid, characterised in that the telescopic joint construction (13) comprises:

-a first connection body (131) for connection to the first guide rail (11), the first connection body (131) being provided with a third work surface (1311) on which the fluid acts;

a second connecting body (132) for connecting to the second guide rail (12), a predetermined gap (133) being formed between the second connecting body (132) and the first connecting body (131), a fourth working surface (1324) being provided on the second connecting body (132) for the fluid to act on;

a guide body (134), the first connection body (131) and the second connection body (132) being simultaneously slidably engaged with the guide body (134), the guide body (134) being used for guiding the first connection body (131) and the second connection body (132) to move along the length direction of the first guide rail (11) or the second guide rail (12) so as to make the first working surface (111), the second working surface (121), the third working surface (1311) and the fourth working surface (1324) coplanar;

wherein the reserved gap (133) is increased or decreased in a process that the first connecting body (131) and the second connecting body (132) move along the length direction of the first guide rail (11) or the second guide rail (12).

2. The telescopic joint construction according to claim 1, characterised in that the telescopic joint construction (13) further comprises a first adjustment body (142) and a second adjustment body (143), the first adjustment body (142) being provided with a fifth working surface (1421) for the fluid, the first adjustment body (142) being simultaneously in sliding engagement with an upper side wall of the first connection body (131) and an upper side wall of the second connection body (132), the second adjustment body (143) being provided with a sixth working surface (1431) for the fluid, the second adjustment body (143) being simultaneously in sliding engagement with a lower side wall of the first connection body (131) and a lower side wall of the second connection body (132), and the first adjustment body (142) and the second adjustment body (143) being simultaneously in sliding engagement with the guide body (134), the guide body (134) being used for guiding the first adjustment body (142) and the second adjustment body (143) along the direction The first guide rail (11) or the second guide rail (12) is moved in the width direction so that the fifth working surface (1421), the sixth working surface (1431), the third working surface (1311), and the fourth working surface (1324) are always coplanar.

3. The telescopic joint structure according to claim 2, characterized in that the upper side wall of the first connection body (131) is provided with a first inclined surface (1317), the upper side wall of the second connection body (132) is provided with a second inclined surface (1327), the second inclined surface (1327) is arranged symmetrically to the first inclined surface (1317), the first adjustment body (142) is provided with a third inclined surface (1422) and a fourth inclined surface (1423), the third inclined surface (1422) is arranged symmetrically to the fourth inclined surface (1423), the third inclined surface (1422) is slidably fitted to the first inclined surface (1317), the fourth inclined surface (1423) is slidably fitted to the second inclined surface (1327), the first connection body (131) and the second connection body (132) are adapted to move along the length direction of the first guide rail (11) or the second guide rail (12), the first adjusting body (142) is driven to move along the width direction of the first guide rail (11) or the second guide rail (12) through the matching between the first inclined surface (1317) and the third inclined surface (1422) and the matching between the second inclined surface (1327) and the fourth inclined surface (1423); and/or the presence of a gas in the gas,

a fifth inclined surface (1318) is provided on a lower side wall of the first connection body (131), a sixth inclined surface (1328) is provided on a lower side wall of the second connection body (132), the fifth inclined surface (1318) and the sixth inclined surface (1328) are symmetrically provided, the second adjustment body (143) is provided with a seventh inclined surface (1432) and an eighth inclined surface (1433), the seventh inclined surface (1432) and the eighth inclined surface (1433) are symmetrically provided, the seventh inclined surface (1432) and the fifth inclined surface (1318) are slidably engaged, the eighth inclined surface (1433) and the sixth inclined surface (1328) are slidably engaged, and the first connection body (131) and the second connection body (132) are configured to pass engagement between the fifth inclined surface (1318) and the seventh inclined surface (1432) and engagement between the sixth inclined surface (1328) and the eighth inclined surface (1328) during movement in a length direction of the first rail (11) or the second rail (12) The cooperation between the inclined planes (1433) drives the second adjusting body (143) to move along the width direction of the first guide rail (11) or the second guide rail (12).

4. The telescopic joint structure according to claim 3, wherein the first inclined surface (1317) is concavely provided with a first guide groove (13171), the second inclined surface (1327) is concavely provided with a second guide groove (13271), the third inclined surface (1422) is convexly provided with a first guide strip (14221), the fourth inclined surface (1423) is convexly provided with a second guide strip (14231), the first guide strip (14221) is slidably fitted with the first guide groove (13171), and the second guide strip (14231) is slidably fitted with the second guide groove (13271); and/or the presence of a gas in the gas,

the fifth inclined surface (1318) is concavely provided with a third guide groove (13181), the sixth inclined surface (1328) is concavely provided with a fourth guide groove (13281), the seventh inclined surface (1432) is convexly provided with a third guide strip (14321), the eighth inclined surface (1433) is convexly provided with a fourth guide strip (14331), the third guide strip (14321) is in sliding fit with the third guide groove (13181), and the fourth guide strip (14331) is in sliding fit with the fourth guide groove (13281).

5. The telescopic joint structure according to claim 2, wherein the telescopic joint structure (13) further includes a connecting rod (23), a first spring (24) and a second spring (25), the first adjusting body (142) is provided with a first counter bore (1425), a first step wall (1426) is disposed in the first counter bore (1425), the second adjusting body (143) is provided with a second counter bore (1435), a second step wall (1436) is disposed in the second counter bore (1435), the connecting rod (23) passes through the first counter bore (1425) and the second counter bore (1435) simultaneously, two ends of the connecting rod (23) are provided with a first abutting wall (231) and a second abutting wall (232), respectively, the first spring (24) and the second spring (25) are sleeved on the connecting rod (23) simultaneously, the first spring (24) is clamped on the first abutting wall (231) and abuts against the first step wall (1426), the second spring (25) is clamped on the second abutting wall (232) and abuts against the second step wall (1436), and the first spring (24) and the second spring (25) are used for enabling the first adjusting body (142) and the second adjusting body (143) to return to initial positions.

6. The telescopic joint structure of claim 2, wherein a first engaging block (21) is disposed on a side of the guiding body (134) close to the first adjusting body (142), a first engaging groove (1424) is recessed on a side of the first adjusting body (142) close to the guiding body (134), the first engaging groove (1424) is slidably engaged with the first engaging block (21) along a width direction of the first guiding rail (11) or the second guiding rail (12), and the first engaging block (21) is configured to limit the first adjusting body (142) and the guiding body (134) from moving along a length direction of the first guiding rail (11) or the second guiding rail (12);

and/or a second clamping block (22) is arranged on one side, close to the second adjusting body (143), of the guide body (134), a second clamping groove (1434) is concavely arranged on one side, close to the guide body (134), of the second adjusting body (143), the second clamping groove (1434) is in sliding fit with the second clamping block (22) along the width direction of the first guide rail (11) or the second guide rail (12), and the second clamping block (22) is used for limiting the second adjusting body (143) and the guide body (134) to move along the length direction of the first guide rail (11) or the second guide rail (12).

7. The telescopic joint construction according to any one of claims 1-6, c h a r a c t e r i z e d in that the telescopic joint construction (13) further comprises a first conductive strap (135) and a second conductive strap (136), the first conductive strap (135) being connected to the guiding body (134) and the first connecting body (131) simultaneously, and the second conductive strap (136) being connected to the guiding body (134) and the second connecting body (132) simultaneously.

8. A rail device, characterized in that it comprises a first rail (11), a second rail (12) and a telescopic joint construction (13) according to any of claims 1-7, wherein the end of the first connecting body (131) remote from the second connecting body (132) is connected to the first rail (11), and the end of the second connecting body (132) remote from the first connecting body (131) is connected to the second rail (12).

9. The rail device according to claim 8, wherein the rail device (1) further comprises a first wedge block (15), the first connection body (131) comprises a first connection portion (1312), a second connection portion (1313) and a third connection portion (1314), the first connection portion (1312), the second connection portion (1313) and the third connection portion (1314) are sequentially connected to form a Z-shaped structure, the first connection portion (1312) is arranged at a distance from the first rail (11), the first wedge block (15) is slidably arranged between the first connection portion (1312) and the first rail (11), the second connection portion (1313) abuts against an end of the first rail (11), and the third connection portion (1314) is provided with a third working surface (1311); and/or the presence of a gas in the gas,

the rail device (1) further comprises a second wedge block (16), the second connecting body (132) comprises a fourth connecting portion (1321), a fifth connecting portion (1322) and a sixth connecting portion (1323), the fourth connecting portion (1321), the fifth connecting portion (1322) and the sixth connecting portion (1323) are sequentially connected to form a Z-shaped structure, the fourth connecting portion (1321) and the second guide rail (12) are arranged at intervals, the second wedge block (16) is slidably arranged between the fourth connecting portion (1321) and the second guide rail (12), the fifth connecting portion (1322) is abutted to the end of the first guide rail (11), and a fourth working surface (1324) is arranged on the sixth connecting portion (1323).

10. The rail device according to claim 9, wherein the rail device (1) further comprises a first mounting block (17) and a first fastener (19), the first mounting block (17) is embedded in the first rail (11), and the first fastener (19) is simultaneously connected with the first mounting block (17) and the first connecting portion (1312) so as to relatively fix the first mounting block (17), the first connecting portion (1312) and the first rail (11); and/or the presence of a gas in the gas,

the rail device (1) further comprises a second mounting block (18) and a second fastener (20), the second mounting block (18) is embedded into the second guide rail (12), and the second fastener (20) is connected with the second mounting block (18) and the fourth connecting portion (1321) at the same time, so that the second mounting block (18), the fourth connecting portion (1321) and the second guide rail (12) are relatively fixed.