Adjustable inner core tensioning mechanism

Abstract

The utility model belongs to the technical field of tensioning mechanisms, and particularly relates to an adjustable inner core tensioning mechanism which comprises a supporting frame and a core cylinder, the core cylinder is fixedly connected to the top of the supporting frame, and tensioning assemblies distributed around the axis of the core cylinder at equal intervals are arranged outside the core cylinder. And an elastic assembly used for stretching out and drawing back the tensioning assembly is arranged in the core cylinder, one end of the tensioning assembly is fixedly connected with a fan-shaped end plate, and the outer wall of the tensioning assembly is slidably connected with a limiting assembly. According to the sleeve tensioning mechanism, when the sleeve tensioning mechanism is used, the tensioning assemblies are rotated to drive the four tensioning assemblies to move outwards so that a sleeve can be tensioned and fixed, the sleeve tensioning mechanism can adapt to sleeves of different diameters, and therefore the sleeve can be machined conveniently, and the fan-shaped end plates and the limiting assemblies are arranged on the tensioning assemblies so that the sleeve can be limited left and right; and in addition, the position of the limiting assembly can be adjusted according to the sleeves of different lengths, and adaptability is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tensioning mechanism, specifically relates to a adjustable inner core tensioning mechanism. BACKGROUND

[0002] Cylinder class spare parts are widely used in production, including cylinder, piston cylinder and sleeve, etc., when such spare parts are repaired and maintained, tensioning mechanism is needed to fix them, and then repair.

[0003] The commonly used tensioning mechanism is designed according to the corresponding spare parts, which is used for the corresponding parts, but the adaptability for other parts is poor, so that the other spare parts are tightened, and the phenomenon of loosening is appeared, which affects the practicability. INNOVATION CONTENT

[0004] The utility model discloses a kind of adjustable inner core tensioning mechanism, it can be tightened fixed to different sizes of cylinder, more strong adaptability, to solve the problem proposed in above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of adjustable inner core tensioning mechanism, including support frame and core barrel, the core barrel is fixedly connected at the top of support frame, the outside of the core barrel is provided with the tensioning assembly that is equidistantly distributed around core barrel axis, the inside of the core barrel is provided with the tightness component for telescopic tensioning assembly, one end of the tensioning assembly is fixedly connected with fan-shaped end plate, the outer wall of the tensioning assembly is slidably connected with limiting component.

[0006] Further, the side wall of the core barrel is provided with the strip-shaped groove that is equidistantly distributed around core barrel axis.

[0007] Further, the tightness component includes screw rod that is rotatably connected in the inside of core barrel by bearing, the side wall of the screw rod is provided with two thread portions with opposite screw directions, one end of the screw rod is fixedly connected with stud, one end of the stud is provided with hexagonal groove.

[0008] Further, two the thread portions are all screw-connected with threaded barrel, the side wall of the threaded barrel is provided with the first mounting seat that is equidistantly distributed around threaded barrel axis, the inside of the first mounting seat is rotatably connected with brace, the brace penetrates corresponding strip-shaped groove.

[0009] Further, the middle part of brace installed in the side wall of one the threaded barrel is provided with through groove, and the brace installed in the side wall of another the threaded barrel penetrates through groove.

[0010] Further, the tensioning assembly comprises an arc-shaped plate, second mounting seats are arranged at both ends of the inner wall of the arc-shaped plate, one end of the supporting rod is rotationally connected to the inside of the corresponding second mounting seat, a sliding strip is fixedly connected to the middle of the outer wall of the arc-shaped plate, and a sliding groove is arranged on the side wall of the sliding strip.

[0011] Further, the limiting assembly comprises a sliding sleeve slidingly connected to the outer wall of the sliding groove, a bolt is arranged at the bottom of the sliding sleeve, the bolt penetrates the sliding groove, and one end of the sliding sleeve is fixedly connected to a limiting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are that: when the mechanism is used, four tensioning assemblies are driven to move outward by rotating the tensioning assembly, so that the sleeve is tightly fixed, different diameters of sleeves can be adapted, the sleeves are conveniently processed, the sleeves can be left-right limited by the fan-shaped end plate and the limiting assembly arranged on the tensioning assembly, the stability of the sleeves is improved, the position of the limiting assembly can be adjusted according to sleeves of different lengths, and the adaptability is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the utility model;

[0014] Figure 2 It is a front sectional view of the utility model;

[0015] Figure 3 It is an explosion view of the utility model.

[0016] In the drawings, the components represented by each reference numeral are listed as follows:

[0017] 1, support frame; 2, core barrel; 21, strip-shaped groove; 3, tensioning assembly; 31, screw rod; 32, threaded part; 33, threaded cylinder; 34, first mounting seat; 35, supporting rod; 36, through groove; 37, stud; 38, hexagonal groove; 4, tensioning assembly; 41, arc-shaped plate; 42, second mounting seat; 43, sliding strip; 44, sliding groove; 5, fan-shaped end plate; 6, limiting assembly; 61, sliding sleeve; 62, limiting plate. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the utility model more clear and obvious, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model.

[0019] For example, Figure 1 And 3As shown in the figure, the adjustable inner core tensioning mechanism comprises a support frame 1 and a core barrel 2, the core barrel 2 is fixedly connected to the top of the support frame 1, the outer part of the core barrel 2 is provided with tensioning assemblies 4 which are equidistantly distributed around the axis of the core barrel 2, the inner part of the core barrel 2 is provided with loose assemblies 3 for stretching the tensioning assemblies 4, one end of the tensioning assemblies 4 is fixedly connected with a fan-shaped end plate 5, and the outer wall of the tensioning assemblies 4 is slidingly connected with a limiting assembly 6.

[0020] According to the above structure, when in use, the four tensioning assemblies 4 are retracted, the sleeve to be processed is sleeved on the outside of the mechanism, and then the sleeve is tensioned and fixed by rotating the loose assembly 3 to drive the four tensioning assemblies 4 to move outward, thereby facilitating the processing of the sleeve, and the fan-shaped end plate 5 and the limiting assembly 6 provided on the tensioning assembly 4 can limit the sleeve left and right, thereby improving the stability of the sleeve.

[0021] As shown in the figure, Figure 2 and 3 the side wall of the core barrel 2 is provided with strip-shaped grooves 21 which are equidistantly distributed around the axis of the core barrel 2, the loose assembly 3 comprises a lead screw 31 which is rotatably connected inside the core barrel 2 through a bearing, the side wall of the lead screw 31 is provided with two screw threads 32 which are opposite in screwing direction, one end of the lead screw 31 is fixedly connected with a stud 37, one end of the stud 37 is provided with a hexagonal groove 38, both of the screw threads 32 are threadedly connected with screw cylinders 33, the side wall of the screw cylinder 33 is provided with first mounting seats 34 which are equidistantly distributed around the axis of the screw cylinder 33, the inner part of the first mounting seat 34 is rotatably connected with a supporting rod 35, the supporting rod 35 penetrates through the corresponding strip-shaped groove 21, the middle part of the supporting rod 35 mounted on the side wall of one of the screw cylinders 33 is provided with a through groove 36, the supporting rod 35 mounted on the side wall of the other screw cylinder 33 penetrates through the through groove 36, and the tensioning assembly 4 comprises an arc-shaped plate 41, both ends of the inner wall of the arc-shaped plate 41 are provided with second mounting seats 42, and one end of the supporting rod 35 is rotatably connected inside the corresponding second mounting seat 42.

[0022] According to the above structure, when in use, the sleeve is placed outside the four tensioning assemblies 4, and then the stud 37 is rotated clockwise using a hexagonal wrench, thereby driving the lead screw 31 to rotate clockwise, after the lead screw 31 rotates, the two screw cylinders 33 are driven to move close to each other, thereby making one end of the two supporting rods 35 close to each other, thereby lifting the tensioning assembly 4 outward, and the sleeve is tensioned and fixed as the tensioning assembly 4 is lifted outward.

[0023] As shown in the figure, Figure 3 the middle part of the outer wall of the arc-shaped plate 41 is fixedly connected with a sliding bar 43, the side wall of the sliding bar 43 is provided with a sliding groove 44, the limiting assembly 6 comprises a sliding sleeve 61 which is slidingly connected to the outer wall of the sliding groove 44, the bottom of the sliding sleeve 61 is provided with a bolt which penetrates through the sliding groove 44, and one end of the sliding sleeve 61 is fixedly connected with a limiting plate 62.

[0024] According to the structure, in use, the position of the sliding sleeve 61 is adjusted according to the length of the sleeve, so that the distance between the side of the limiting plate 62 and the side of the fan-shaped end plate 5 close to each other is equal to the length of the sleeve, after the sleeve is tightened, the fan-shaped end plate 5 and the side of the limiting plate 62 are arranged at the two ends of the sleeve respectively, so that the sleeve is limited in the left-right direction, and the stability of the sleeve is improved.

[0025] The working principle of the utility model is as follows: in use, the sleeve is placed outside the four tightening assemblies 4, then a hexagonal wrench is used to rotate the stud 37 clockwise, so as to drive the lead screw 31 to rotate clockwise, after the lead screw 31 rotates, the two threaded barrels 33 are driven to move close to each other, then the ends of the two supporting rods 35 are close to each other, then the tightening assembly 4 is lifted outward, the sleeve is tightened and fixed, in use, the position of the sliding sleeve 61 is adjusted according to the length of the sleeve, so that the distance between the side of the limiting plate 62 and the side of the fan-shaped end plate 5 close to each other is equal to the length of the sleeve, after the sleeve is tightened, the fan-shaped end plate 5 and the side of the limiting plate 62 are arranged at the two ends of the sleeve respectively, so that the sleeve is limited in the left-right direction, and the stability of the sleeve is improved.

[0026] The above is only the preferred embodiment of the utility model, it should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the utility model. The structure, device and operation method not specifically described and explained in the utility model are implemented according to conventional means in the art, without special description and limitation.

Claims

1. An adjustable inner core tensioning mechanism comprising a support frame (1) and a core barrel (2), characterized in that: The core barrel (2) is fixedly connected to the top of the support frame (1), the outer part of the core barrel (2) is provided with the tensioning assemblies (4) which are equidistantly distributed around the axis of the core barrel (2), the inner part of the core barrel (2) is provided with the loose assemblies (3) for stretching the tensioning assemblies (4), one end of the tensioning assembly (4) is fixedly connected with the sector-shaped end plate (5), and the outer wall of the tensioning assembly (4) is slidingly connected with the limiting assembly (6).

2. An adjustable inner core tensioning mechanism according to claim 1, wherein: The side wall of the core barrel (2) is provided with the strip-shaped grooves (21) which are equidistantly distributed around the axis of the core barrel (2).

3. An adjustable inner core tensioning mechanism according to claim 2, wherein: The loose assembly (3) comprises the lead screw (31) which is rotatably connected to the inner part of the core barrel (2) through a bearing, the side wall of the lead screw (31) is provided with two screw threads (32) which are opposite in screwing direction, one end of the lead screw (31) is fixedly connected with the stud (37), and one end of the stud (37) is provided with the hexagonal groove (38).

4. An adjustable inner core tensioning mechanism according to claim 3, wherein: The screw thread (32) is threadedly connected with the threaded sleeve (33), the side wall of the threaded sleeve (33) is provided with the first mounting seat (34) which is equidistantly distributed around the axis of the threaded sleeve (33), the inner part of the first mounting seat (34) is rotatably connected with the supporting rod (35), and the supporting rod (35) penetrates through the corresponding strip-shaped groove (21).

5. An adjustable inner core tensioning mechanism according to claim 4, wherein: The middle part of the supporting rod (35) which is arranged on the side wall of one of the threaded sleeves (33) is provided with the through groove (36), and the supporting rod (35) which is arranged on the side wall of the other threaded sleeve (33) penetrates through the through groove (36).

6. An adjustable inner core tensioning mechanism according to claim 5, wherein: The tensioning assembly (4) comprises the arc-shaped plate (41), both ends of the inner wall of the arc-shaped plate (41) are provided with the second mounting seat (42), one end of the supporting rod (35) is rotatably connected to the inner part of the corresponding second mounting seat (42), the middle part of the outer wall of the arc-shaped plate (41) is fixedly connected with the sliding bar (43), and the side wall of the sliding bar (43) is provided with the sliding groove (44).

7. An adjustable inner core tensioning mechanism according to claim 6, wherein: The limiting assembly (6) comprises the sliding sleeve (61) which is slidingly connected to the outer wall of the sliding groove (44), the bottom of the sliding sleeve (61) is provided with the bolt which penetrates through the sliding groove (44), and one end of the sliding sleeve (61) is fixedly connected with the limiting plate (62).

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