Bellows telescopic support device

Abstract

The present invention provides a bellows telescopic support device, which relates to the field of pipeline support, and includes a base, a telescopic drive transmission assembly, and at least two bellows constraint plates; a first and a second bracket are provided on the base along the length direction of the base, and the first and the second brackets are provided with a first fixing structure capable of fixing the end of the bellows to the corresponding bracket; an optical axis is connected between the first and the second brackets, and a plurality of bellows constraint plates extend longitudinally and are slidably connected to the optical axis; each bellows constraint plate is provided with a second fixing structure capable of fixing the peripheral wall of the bellows installed between the first bracket and the second bracket to the bellows constraint plate; the telescopic drive transmission assembly is installed on the base, and the telescopic drive transmission assembly is configured to drive the second bracket to move in a direction close to or away from the first bracket. The present invention alleviates the technical problem in the prior art that the distortion of the bellows affects the application of the bellows when the bellows are contracted.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline support, and in particular to a bellows telescopic support device. Background Art

[0002] The welded bellows is used as a vacuum connecting pipe fitting, one end of which is connected to the vacuum chamber and the other end is connected to the application device. When the bellows needs to shrink, the bellows will be twisted, which will affect the application of the bellows. Summary of the invention

[0003] The object of the present invention is to provide a bellows telescopic support device to alleviate the technical problem in the prior art that the bellows is twisted when the bellows is contracted, which affects the application of the bellows.

[0004] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0005] The embodiment of the present invention provides a bellows telescopic support device, comprising a base, a telescopic drive transmission assembly and at least two bellows restraining plates;

[0006] Along the length direction of the base, a first bracket and a second bracket are provided on the base in opposite directions, and the first bracket and the second bracket are both provided with a first fixing structure capable of fixing the end of the corrugated pipe to the corresponding bracket;

[0007] An optical axis is connected between the first bracket and the second bracket, a plurality of the bellows constraint plates extend longitudinally and are slidably connected to the optical axis, and two adjacent bellows constraint plates are spaced apart from each other; each of the bellows constraint plates is provided with a second fixing structure capable of fixing the peripheral wall of the bellows installed between the first bracket and the second bracket to the bellows constraint plate;

[0008] The telescopic drive transmission assembly is installed on the base, and the telescopic drive transmission assembly is configured to drive the second bracket to move toward or away from the first bracket.

[0009] In an optional embodiment, the first bracket and the second bracket respectively include respective bracket lower plates, and the bottom of the bracket lower plate is fixedly connected to the base;

[0010] The first fixing structure includes a bracket upper plate and a fixing member;

[0011] The top surface of the bracket lower plate and the bottom surface of the bracket upper plate are both provided with grooves, and the fixing piece fixes the bracket upper plate to the bracket lower plate in a detachable manner, and makes the groove of the bracket upper plate and the groove of the bracket lower plate dock with each other to form a bellows end flange fixing hole, and the bellows end flange fixing hole is configured to be able to be clamped and connected to the end flanges at both ends of the bellows.

[0012] In an optional embodiment, in the first fixing structure: the fixing member includes a screw; a stepped hole passing through the upper plate of the bracket is provided on the upper plate of the bracket, and a threaded hole is provided on the lower plate of the bracket, and the screw fixes the upper plate of the bracket to the lower plate of the bracket in a manner that the rod passes through the stepped hole and then is screwed into the threaded hole.

[0013] In an optional embodiment, each of the bellows restraining plates comprises a respective restraining plate lower plate, and the restraining plate lower plate is slidably connected to the optical axis;

[0014] The second fixing structure includes a restraining plate upper plate and a fixing member;

[0015] The top surface of the lower plate of the constraint plate and the bottom surface of the upper plate of the constraint plate are both provided with grooves, and the fixing member fixes the upper plate of the constraint plate to the lower plate of the constraint plate in a detachable manner, and makes the groove on the upper plate of the constraint plate and the groove on the lower plate of the constraint plate dock with each other to form a bellows fixing hole, and the bellows fixing hole is configured to be able to be fixed in the groove on the peripheral wall of the bellows.

[0016] In an optional embodiment, in the second fixing structure:

[0017] The fixing member comprises a bolt and a nut;

[0018] Along the length direction of the base, first extension parts perpendicular to the upper plate of the constraint plate are respectively provided on both sides of the upper plate of the constraint plate, and first bolt holes are opened on the first extension parts; second extension parts perpendicular to the lower plate of the constraint plate are respectively provided on both sides of the lower plate of the constraint plate, and second bolt holes are opened on the second extension parts;

[0019] When the groove on the upper plate of the constraint plate and the groove on the lower plate of the constraint plate are connected to each other to form a bellows fixing hole, the first extension part and the second extension part overlap one by one, and in the overlapping first extension part and the second extension part: the axis of the first bolt hole coincides with the axis of the second bolt hole; the rod of the bolt passes through the first bolt hole and the second bolt hole and is locked by the nut.

[0020] In an optional embodiment, the telescopic drive transmission assembly includes a motor and a ball screw with a screw nut mounted thereon;

[0021] The motor is fixed to the base;

[0022] The ball screw passes through the second bracket, one end of the ball screw is connected to the output shaft of the motor, the other end of the ball screw is rotatably connected to the first bracket, and the screw nut is fixedly connected to the second bracket;

[0023] The motor is configured to drive the ball screw to rotate so that the screw nut reciprocates along the length direction of the ball screw.

[0024] In an optional embodiment, a guide rail extending along the length direction of the base is provided on the base, and the second bracket is slidably connected to the guide rail.

[0025] In an optional embodiment, the base includes a base plate and a reinforcement plate, the reinforcement plate is fixedly connected to the upper surface of the base plate, and the first bracket and the second bracket are installed on the upper surface of the reinforcement plate.

[0026] In an optional embodiment, along the length extension direction of the base, limit switches are respectively provided at both ends of the base, and a limit position triggering member is provided on the side of the second bracket;

[0027] The extreme position trigger component is configured to contact and connect the driving part of the telescopic drive transmission assembly and the corresponding extreme position switch under the condition that the second bracket slides to the extreme position relative to the first bracket in the direction approaching the first bracket, or under the condition that the second bracket slides to the extreme position relative to the first bracket in the direction away from the first bracket, so that the driving part of the telescopic drive transmission assembly stops driving the second bracket to move toward or away from the first bracket.

[0028] In an optional embodiment, an optical axis through hole and an optical axis sleeve are provided on the bellows constraint plate, the optical axis sleeve is connected to the optical axis through hole, and the optical axis passes through the optical axis sleeve and the optical axis through hole.

[0029] The embodiments of the present invention can achieve the following beneficial effects:

[0030] The embodiment of the present invention provides a bellows telescopic support device, comprising a base, a telescopic drive transmission assembly and at least two bellows constraint plates. Along the length direction of the base, a first bracket and a second bracket are arranged on the base in opposite directions, and the first bracket and the second bracket are both provided with a first fixing structure capable of fixing the end of the bellows to the corresponding bracket; an optical axis is connected between the first bracket and the second bracket, a plurality of bellows constraint plates extend longitudinally and are slidably connected to the optical axis, and two adjacent bellows constraint plates are spaced apart from each other; each bellows constraint plate is provided with a second fixing structure capable of fixing the peripheral wall of the bellows installed between the first bracket and the second bracket to the bellows constraint plate; the telescopic drive transmission assembly is installed on the base, and the telescopic drive transmission assembly is configured to drive the second bracket to move in a direction close to or away from the first bracket.

[0031] In the embodiment of the present invention, by providing a base, a first bracket, a second bracket, an optical axis and a bellows constraint plate, the bellows can be constrained and restricted by the bellows constraint plate during the process of the telescopic drive transmission assembly driving the bellows to contract, so that the central axis of the bellows at various locations is on the original central axis, that is, the bellows is compressed along a straight path, avoiding distortion of the bellows during the compression process that affects the application of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 An axonometric view of the overall structure of the bellows telescopic support device provided in an embodiment of the present invention;

[0034] Figure 2 A front view of the overall structure of the bellows telescopic support device provided by an embodiment of the present invention;

[0035] Figure 3 for Figure 2 Middle AA section view;

[0036] Figure 4 A schematic diagram of the overall structure of a bellows restraining plate in a bellows telescopic support device provided by an embodiment of the present invention from one perspective;

[0037] Figure 5 A schematic diagram of the overall structure of a bellows restraining plate in a bellows telescopic support device provided in an embodiment of the present invention from another perspective.

[0038] Icons: 100- bellows; 110- bellows spacer ring; 1101- slot; 1- base; 101- base plate; 102- reinforcement plate; 11- first bracket; 12- second bracket; 111- bracket upper plate; 1110- stepped hole; 112- bracket lower plate; 13- optical axis; 14- guide rail; 2- telescopic drive transmission assembly; 21- motor; 22- ball screw; 23- screw nut; 3- bellows constraint plate; 30- bellows clamping hole; 301- optical axis through hole; 302- optical axis sleeve; 31- constraint plate upper plate; 311- first extension; 32- constraint plate lower plate; 321- second extension; 4- end flange; 5- limit position switch; 6- limit position trigger component. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] This embodiment provides a bellows telescopic support device, referring to Figures 1 to 5 The bellows telescopic support device includes a base 1, a telescopic drive transmission assembly 2 and at least two bellows restraint plates 3.

[0047] Specifically, Figures 1 to 3 As shown, along the length direction of the base 1, a first bracket 11 and a second bracket 12 are relatively provided on the base 1, and the first bracket 11 and the second bracket 12 are both provided with a first fixing structure capable of fixing the end of the bellows 100 to the corresponding bracket; at least one optical axis 13 is connected between the first bracket 11 and the second bracket 12, and a plurality of bellows constraint plates 3 extend longitudinally and are slidably connected to the optical axis 13, and two adjacent bellows constraint plates 3 are spaced apart from each other; each bellows constraint plate 3 is provided with a second fixing structure capable of fixing the peripheral wall of the bellows 100 installed between the first bracket 11 and the second bracket 12 to the bellows constraint plate 3; the telescopic drive transmission assembly 2 is installed on the base 1, and the telescopic drive transmission assembly 2 is configured to be able to drive the second bracket 12 to move toward or away from the first bracket 11.

[0048] In this embodiment, by providing a base 1, a first bracket 11, a second bracket 12, an optical axis 13 and a bellows constraint plate 3, the bellows can be constrained and restricted by the bellows constraint plate 3 during the process of the telescopic drive transmission assembly 2 driving the bellows 100 to contract, so that the central axis of the bellows 100 at various locations is on the original central axis, that is, the bellows 100 is compressed along a straight path, thereby avoiding distortion of the bellows 100 during the compression process that affects the application of the bellows.

[0049] Continue to refer to Figures 1 to 3 In the optional implementation of this embodiment, the first fixing structure has a variety of optional structural forms, wherein, preferably, the first bracket 11 and the second bracket 12 respectively include their own bracket lower plates 112, the bottom of which is fixedly connected to the base 1; the first fixing structure includes a bracket upper plate 111 and a fixing member; the top surface of the bracket lower plate 112 and the bottom surface of the bracket upper plate 111 are both provided with grooves, the fixing member fixes the bracket upper plate 111 to the bracket lower plate 112 in a detachable manner, and the groove of the bracket upper plate 111 and the groove of the bracket lower plate 112 are mutually connected to form a bellows end flange fixing hole, and the bellows end flange fixing hole is configured to be able to be clamped and connected to the end flanges 4 at both ends of the bellows 100. In the first bracket 11 and the second bracket 12 provided in this preferred embodiment, the first fixing structure and the bracket lower plate 112 are combined with each other to clamp the end flanges 4 at both ends of the bellows 100, the overall structure is simple, the fixing process is convenient and easy to operate, and it is conducive to improving assembly efficiency.

[0050] In this preferred embodiment, further preferably, in the first fixing structure: the fixing member includes a screw; Figure 1 As shown, a stepped hole 1110 passing through the bracket upper plate 111 is provided on the bracket upper plate 111, and a threaded hole is provided on the bracket lower plate 112. The screw fixes the bracket upper plate 111 to the bracket lower plate 112 by passing the rod through the stepped hole 1110 and then screwing into the threaded hole.

[0051] In the optional implementation manner of the present embodiment, the second fixing structure has a variety of optional structural forms, among which, more preferably, each bellows constraint plate 3 respectively includes its own constraint plate lower plate 32, and the constraint plate lower plate 32 is slidably connected to the optical axis 13; the second fixing structure includes a constraint plate upper plate 31 and a fixing member; the top surface of the constraint plate lower plate 32 and the bottom surface of the constraint plate upper plate 31 are both provided with grooves, and the fixing member fixes the constraint plate upper plate 31 to the constraint plate lower plate 32 in a detachable manner, and makes the groove of the constraint plate upper plate 31 and the groove of the constraint plate lower plate 32 dock with each other to form a bellows fixing hole 30, and the bellows fixing hole 30 is configured to be able to be fixed in the groove 1101 on the peripheral wall of the bellows 100, specifically but not limited to, such as Figure 3 As shown, the bellows 100 is formed by multiple sections of pipelines which are sealed and connected in sequence through bellows spacer rings 110. A groove is provided on the circumferential surface of the bellows spacer ring 110, which serves as the clamping groove 1101 on the circumferential wall of the aforementioned bellows 100. When the bellows 100 is assembled on the bellows telescopic support device, the bellows clamping hole 30 is clamped in the clamping groove 1101. Of course, the above-mentioned bellows spacer ring 110 may not be provided, but a groove may be directly provided on the circumferential wall of the bellows 100 as the clamping groove 1101, so that the bellows clamping hole 30 is clamped in the clamping groove 1101 to fix the circumferential wall of the bellows 100 to the bellows restraint plate 3.

[0052] In this preferred embodiment, further preferably, in the second fixing structure: the fixing member includes a bolt and a nut; along the length direction of the base 1, such as Figure 4 and Figure 5 As shown, first extension portions 311 perpendicular to the constraint plate upper plate 31 are respectively provided on both sides of the constraint plate upper plate 31, and a first bolt hole is opened on the first extension portion 311; second extension portions 321 perpendicular to the constraint plate lower plate 32 are respectively provided on both sides of the constraint plate lower plate 32, and a second bolt hole is opened on the second extension portion 321; when the groove of the constraint plate upper plate 31 and the groove of the constraint plate lower plate 32 are connected to each other to form the bellows clamping hole 30, the first extension portion 311 and the second extension portion 321 overlap one by one, and in the overlapping first extension portion 311 and the second extension portion 321: the axis of the first bolt hole coincides with the axis of the second bolt hole; the rod of the bolt passes through the first bolt hole and the second bolt hole and is locked by a nut.

[0053] Reference Figures 1 to 3 In an optional implementation of the present embodiment, the telescopic drive transmission assembly 2 includes a motor 21 and a ball screw 22 with a screw nut 23 installed thereon; specifically, the motor 21 may be, but is not limited to, fixed to the base 1 through a motor support; the ball screw 22 passes through the second bracket 12, one end of the ball screw 22 is connected to the output shaft of the motor 21, the other end of the ball screw 22 is rotatably connected to the first bracket 11, and the screw nut 23 is fixedly connected to the second bracket 12; the motor 21 is configured to be able to drive the ball screw 22 to rotate, so that the screw nut 23 reciprocates along the length direction of the ball screw 22. The ball screw 22 passes through the bottom of the bellows constraint plate 3, or a screw through hole is provided at the bottom of the bellows constraint plate 3 for the ball screw 22 to pass through.

[0054] In order to increase the driving transmission stability, in the optional implementation mode of this embodiment, it is more preferred that Figure 1 and Figure 2 As shown, a guide rail 14 extending along the length direction of the base 1 is provided on the base 1, and the second bracket 12 is slidably connected to the guide rail 14. The guide rail 14 constrains and guides the sliding process of the second bracket 12 to improve the driving transmission stability. At the same time, the sliding smoothness of the second bracket 12 relative to the first bracket 11 is improved, which is beneficial to improving the efficiency of compressing or stretching the corrugated tube 100 from the compressed state.

[0055] like Figure 1 As shown, in an optional implementation of the present embodiment, it is more preferred that the base 1 includes a substrate 101 and a reinforcement plate 102, the reinforcement plate 102 is fixedly connected to the upper surface of the substrate 101, and the first bracket 11 and the second bracket 12 are installed on the upper surface of the reinforcement plate 102, so that the structural strength of the base 1 can be increased by the reinforcement plate 102.

[0056] Reference Figure 1 and Figure 2 In the optional implementation of the present embodiment, preferably, limit switches 5 are provided at both ends of the base 1 along the length extension direction of the base 1, and a limit position triggering member 6 is provided at the side of the second bracket 12; the limit position triggering member 6 is configured to: contact and connect the driving part of the telescopic drive transmission assembly 2 and the corresponding limit switch 5 when the second bracket 12 slides to the limit position relative to the first bracket 11 in the direction close to the first bracket 11, or when the second bracket 12 slides to the limit position relative to the first bracket 11 in the direction away from the first bracket 11, so that the driving part of the telescopic drive transmission assembly 2 stops driving the second bracket 12 to move in the direction close to or away from the first bracket 11. In the present preferred implementation, the limit switch 5 and the limit position triggering member 6 can be provided to prevent the first bracket 11 and the second bracket 12 from being too close to or too far away from each other, so as to ensure that the bellows 100 is not overly compressed or overly stretched, which is beneficial to improving the service life of the bellows 100.

[0057] In an optional implementation manner of the present embodiment, it is more preferred that an optical axis through hole 301 and an optical axis sleeve 302 are provided on the bellows constraint plate 3, the optical axis sleeve 302 is connected to the optical axis through hole 301, and the optical axis 13 passes through the optical axis sleeve 302 and the optical axis through hole 301. The optical axis sleeve 302 can limit and guide the bellows constraint plate 3 during the sliding process along the optical axis 13, thereby avoiding a large shaking of the bellows constraint plate 3 during the sliding process along the optical axis 13, increasing the stability of the connection between the optical axis 13 and the bellows constraint plate 3, and guiding the sliding at the same time, thereby increasing the sliding smoothness of the bellows constraint plate 3 during the sliding process along the optical axis 13.

[0058] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other; the above embodiments in this specification are only used to illustrate the technical solution of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that: it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.

Claims

1. A bellows telescopic support device, characterized in that: It comprises a base (1), a telescopic drive transmission assembly (2), and at least two bellows restraining plates (3); A first bracket (11) and a second bracket (12) are provided on the base (1) along the length direction of the base (1), and opposite to each other. The first bracket (11) and the second bracket (12) are both provided with a first fixing structure capable of fixing an end of the corrugated tube (100) to a corresponding bracket. An optical axis (13) is connected between the first bracket (11) and the second bracket (12); a plurality of the bellows restraining plates (3) extend longitudinally and are slidably connected to the optical axis (13); two adjacent bellows restraining plates (3) are spaced apart from each other; each of the bellows restraining plates (3) is provided with a second fixing structure capable of fixing a peripheral wall of a bellows (100) installed between the first bracket (11) and the second bracket (12) to the bellows restraining plate (3); The telescopic drive transmission assembly (2) is mounted on the base (1), and the telescopic drive transmission assembly (2) is configured to be able to drive the second bracket (12) to move towards or away from the first bracket (11); The first bracket (11) and the second bracket (12) respectively comprise respective bracket lower plates (112), and the bottom of the bracket lower plates (112) is fixedly connected to the base (1); The first fixing structure comprises a bracket upper plate (111) and a fixing member; the top surface of the bracket lower plate (112) and the bottom surface of the bracket upper plate (111) are both provided with grooves; the fixing member fixes the bracket upper plate (111) to the bracket lower plate (112) in a detachable manner, and the groove of the bracket upper plate (111) and the groove of the bracket lower plate (112) are connected to each other to form a bellows end flange fixing hole; the bellows end flange fixing hole is configured to be able to be fixedly connected to the end flanges (4) at both ends of the bellows (100); Each of the bellows restraining plates (3) comprises a respective restraining plate lower plate (32), and the restraining plate lower plate (32) is slidably connected to the optical axis (13); The second fixing structure comprises a constraint plate upper plate (31) and a fixing member; the top surface of the constraint plate lower plate (32) and the bottom surface of the constraint plate upper plate (31) are both provided with grooves; the fixing member fixes the constraint plate upper plate (31) to the constraint plate lower plate (32) in a detachable manner, and enables the groove of the constraint plate upper plate (31) and the groove of the constraint plate lower plate (32) to butt against each other to form a bellows fixing hole (30); the bellows fixing hole (30) is configured to be fixed in a fixing groove (1101) on the peripheral wall of the bellows (100); In the second fixing structure: the fixing member comprises a bolt and a nut; along the length direction of the base (1), first extension portions (311) perpendicular to the upper plate (31) of the constraint plate are respectively provided on both sides of the upper plate (31) of the constraint plate, and a first bolt hole is opened on the first extension portion (311); second extension portions (321) perpendicular to the lower plate (32) of the constraint plate are respectively provided on both sides of the lower plate (32) of the constraint plate, and a second bolt hole is opened on the second extension portion (321); when the groove of the upper plate (31) of the constraint plate and the groove of the lower plate (32) of the constraint plate are butted against each other to form the bellows fixing hole (30), the first extension portion (311) and the second extension portion (321) overlap in a one-to-one correspondence, and in the overlapping first extension portion (311) and the second extension portion (321): the axis of the first bolt hole coincides with the axis of the second bolt hole; The rod of the bolt passes through the first bolt hole and the second bolt hole and is then locked by the nut; Along the length extension direction of the base (1), two ends of the base (1) are respectively provided with limit switches (5), and a side portion of the second bracket (12) is provided with a limit position triggering member (6); the limit position triggering member (6) is configured to: contact and connect the driving part of the telescopic drive transmission assembly (2) and the corresponding limit switch (5) under the condition that the second bracket (12) slides relative to the first bracket (11) in a direction close to the first bracket (11) to the limit position, or under the condition that the second bracket (12) slides relative to the first bracket (11) in a direction away from the first bracket (11) to the limit position, so that the driving part of the telescopic drive transmission assembly (2) stops driving the second bracket (12) to move in a direction close to or away from the first bracket (11); An optical axis through hole (301) and an optical axis sleeve (302) are provided on the bellows restraining plate (3); the optical axis sleeve (302) is communicated with the optical axis through hole (301); and the optical axis (13) passes through the optical axis sleeve (302) and the optical axis through hole (301).

2. The bellows telescopic support device according to claim 1, characterized in that: In the first fixing structure: the fixing member comprises a screw; a stepped hole (1110) penetrating the bracket upper plate (111) is provided on the bracket upper plate (111), and a threaded hole is provided on the bracket lower plate (112); the screw fixes the bracket upper plate (111) to the bracket lower plate (112) in a manner in which a rod portion passes through the stepped hole (1110) and is then screwed into the threaded hole.

3. The bellows telescopic support device according to claim 1 or 2, characterized in that: The telescopic drive transmission assembly (2) comprises a motor (21) and a ball screw (22) mounted with a screw nut (23); The motor (21) is fixed to the base (1); The ball screw (22) passes through the second bracket (12), one end of the ball screw (22) is connected to the output shaft of the motor (21), the other end of the ball screw (22) is rotatably connected to the first bracket (11), and the screw nut (23) is fixedly connected to the second bracket (12); The motor (21) is configured to be able to drive the ball screw (22) to rotate, so that the screw nut (23) reciprocates along the length direction of the ball screw (22).

4. The bellows telescopic support device according to claim 1 or 2, characterized in that: A guide rail (14) extending along the length direction of the base (1) is provided on the base (1), and the second bracket (12) is slidably connected to the guide rail (14).

5. The bellows telescopic support device according to claim 1, characterized in that: The base (1) comprises a base plate (101) and a reinforcement plate (102), wherein the reinforcement plate (102) is fixedly connected to the upper surface of the base plate (101), and the first bracket (11) and the second bracket (12) are mounted on the upper surface of the reinforcement plate (102).

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