CN218564249U

CN218564249U - Variable cross-section tensioning spring

Info

Publication number: CN218564249U
Application number: CN202222256073.XU
Authority: CN
Inventors: 邹先平
Original assignee: Dongguan Xiechen Precision Hardware Co ltd
Current assignee: Dongguan Xiechen Precision Hardware Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-03-03
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a variable cross-section tension spring, which comprises a tension spring body, wherein the upper end surface and the lower end surface of the tension spring body are respectively fixed with a mounting seat, the upper end surface of the mounting seat below is fixed with a cylinder, the cylinder is connected with a slide bar, and the upper end of the slide bar is fixed on the lower end surface of the mounting seat above; further comprising: the air outlet is formed in the lower side surface of the cylinder, and slow exhaust can be realized through the air outlet; and the limiting plate is fixed on the sliding rod, and the compression deformation degree of the tension spring body can be limited through the limiting plate. This variable cross section tension spring adopts cross-section adjustment mechanism, can realize adjusting tension spring body installation cross-section to adapt to actual installation demand, improve the adaptability of device, cooperation buffer gear and stop gear can effectively avoid tension spring body to produce bending deformation or fracture because of the exogenic action, thereby guarantee tension spring body's life.

Description

Variable cross-section tensioning spring

Technical Field

The utility model relates to the technical field of springs, specifically a variable cross-section tension spring.

Background

The spring is a mechanical part which works by utilizing elasticity, is generally in a spiral structure, mainly comprises the spring and a mounting seat, is widely applied in real life (for example, the spring is commonly used for tensioning other parts in hydraulic equipment of professional production engineering mechanical equipment), but the existing spring has certain defects in the actual use process:

in the spring carries out the use, mainly through the spring atress shrink with reset the realization effect of doing work, when the spring bears great effort suddenly, thereby the spring leads to the spring easily to produce bending deformation or fracture damage in order to produce sharp deformation, and then influences the normal use of spring, and when installing the spring, the spring cross-section is fixed knot structure, when the mounted position both ends cross-section is different, current spring is difficult to satisfy the actual installation demand, so need improve in order to satisfy the in-service use demand to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a variable cross section tension spring to propose when the spring receives great exogenic action in solving above-mentioned background art, easily produce bending deformation or damage and the inconvenient problem of adjusting in order to adapt to actual installation demand in cross-section.

In order to achieve the above purpose, the utility model provides a following technical scheme: a variable cross-section tension spring comprises a tension spring body, wherein mounting seats are fixed on the upper end face and the lower end face of the tension spring body, a cylinder is fixed on the upper end face of a lower mounting seat, a sliding rod is connected onto the cylinder, and the upper end of the sliding rod is fixed on the lower end face of an upper mounting seat;

further comprising:

the air outlet is formed in the lower side surface of the cylinder, and slow exhaust can be realized through the air outlet;

the limiting plate is fixed on the sliding rod, and the compression deformation degree of the tension spring body can be limited through the limiting plate;

the movable plate is nested in the groove in the upper end of the mounting seat and can slide, three groups of threaded holes are formed in the movable plate at equal intervals, and the movable plate can be fixed by matching bolts with the threaded holes;

the rotation axis, the bearing is connected on the mount pad, and there is positioning screw through threaded connection on the rotation axis to positioning screw and mount pad contact production extrusion force can realize the positioning action, still be fixed with the disc on the rotation axis, and the disc setting is in the mount pad.

Preferably, the slide bar penetrates through the upper end face of the cylinder and can slide up and down, the piston head is further fixed at the lower end of the slide bar and arranged in the cylinder, the piston head is in contact with the inner wall of the cylinder and can slide, when the slide bar slides under stress, the piston head is driven to slide in the cylinder during communication, so that the air pumping and exhausting effect of the cylinder can be realized, the buffer on the tension spring body can be realized through the internal air pressure effect of the cylinder, and the tension spring body is prevented from being deformed or damaged due to the external force effect.

Preferably, the terminal surface is fixed with the blotter under the limiting plate, and can realize cushioning effect when blotter and drum contact, when the tight spring body atress that rises contracts, drives the slide bar and slides, and when blotter and drum contact, the limiting plate bore the effort this moment, can realize the limiting displacement to the tight spring body that rises, avoids the tight spring body that rises to press to warp excessively and damage.

Preferably, the movable plate is provided with a convex shaft and a sliding plate;

the convex shaft is fixed on the movable plate, and is nested in the groove on the mounting seat and can slide;

the sliding plate is fixed on the lower end face of the movable plate, the sliding plate is nested in the groove in the mounting seat and can slide, and when the movable plate is stressed to move, the stability of the movable plate in moving can be guaranteed through the sliding effect between the sliding plate and the mounting seat as well as between the protruding shaft and the mounting seat.

Preferably, terminal surface still vertical fixation has the connecting rod under the fly leaf, and is sliding connection between connecting rod and the mount pad to the connecting rod lower extreme nestification can slide in the spout, when the connecting rod atress removed, through the sliding action between connecting rod and the mount pad, can guarantee that the connecting rod is stable linear motion, and when the connecting rod removed, can provide basic effort for the removal of fly leaf, conveniently adapts to the installation demand in different cross-sections, improves the adaptability of device.

Preferably, the disc is provided with a sliding groove, the sliding groove is of an arc-shaped structure, the sliding grooves are distributed at equal angles relative to the circle center of the disc, the four groups of sliding grooves are arranged, the sliding grooves are driven to rotate simultaneously when the disc rotates, and basic acting force can be provided for the movement of the connecting rod through the sliding effect between the sliding grooves and the connecting rod.

Compared with the prior art, the beneficial effects of the utility model are that: this variable cross section tension spring adopts cross-section adjustment mechanism, can realize adjusting tension spring body installation cross-section to adapt to actual installation demand, improve the adaptability of device, cooperation buffer gear and stop gear can effectively avoid tension spring body to produce bending deformation or fracture because of the exogenic action, thereby guarantee tension spring body's life, its concrete content is as follows:

1. the variable cross-section tensioning spring is provided with the cylinder, when the tensioning spring body is stressed and rapidly contracts, the sliding rod drives the piston head to slide, so that the compression effect on gas in the cylinder is realized, the gas outlet hole can realize slow gas outlet, and the buffer on the tensioning spring body can be realized through the effect of air pressure, so that the damage to the tensioning spring body is effectively avoided, and the service life of the tensioning spring body is prolonged;

2. this variable cross section tension spring is provided with the fly leaf, when needs adapt to different cross-sections and install, through rotating the rotation axis to it is rotatory to drive disc and spout, and then makes the connecting rod atress remove, realizes the regulating action to fly leaf and screw hole position, and tension spring body mainly fixes through screw hole cooperation bolt, thereby can realize the installation demand of different cross-sections to tension spring body.

Drawings

FIG. 1 is a schematic view of the overall front view structure of the device of the present invention;

FIG. 2 is a schematic view of the front cross-sectional structure of the cylinder of the present invention;

fig. 3 is a schematic view of the top-view cross-sectional structure of the mounting base of the present invention;

fig. 4 is a schematic view of the front sectional structure of the mounting base of the present invention;

fig. 5 is a schematic view of the assembly structure of the movable plate and the disc of the present invention.

In the figure: 1. a tension spring body; 2. a mounting seat; 3. a cylinder; 4. an air outlet; 5. a slide bar; 501. a piston head; 6. a limiting plate; 601. a cushion pad; 7. a movable plate; 701. a protruding shaft; 702. a slide plate; 8. a threaded hole; 9. a connecting rod; 10. a rotating shaft; 11. positioning a screw rod; 12. a disc; 1201. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a variable cross-section tension spring comprises a tension spring body 1, wherein mounting seats 2 are fixed on the upper end face and the lower end face of the tension spring body 1, a cylinder 3 is fixed on the upper end face of the lower mounting seat 2, a sliding rod 5 is connected onto the cylinder 3, and the upper end of the sliding rod 5 is fixed on the lower end face of the upper mounting seat 2; further comprising: the air outlet hole 4 is formed in the lower side surface of the cylinder 3, and slow exhaust can be achieved through the air outlet hole 4; the limiting plate 6 is fixed on the sliding rod 5, and the compression deformation degree of the tension spring body 1 can be limited through the limiting plate 6; the movable plate 7 is nested in the groove at the upper end of the mounting seat 2 and can slide, three groups of threaded holes 8 are formed in the movable plate 7 at equal intervals, and the threaded holes 8 are matched with bolts to realize a fixing effect; rotation axis 10, bearing connection are on mount pad 2, and have positioning screw 11 through threaded connection on the rotation axis 10 to positioning

screw

11 and 2 contacts of mount pad produce the extrusion force and can realize the positioning action, still are fixed with disc 12 on the rotation axis 10, and disc 12 sets up in mount pad 2.

The sliding rod 5 penetrates through the upper end face of the cylinder 3 and can slide up and down, a piston head 501 is further fixed at the lower end of the sliding rod 5, the piston head 501 is arranged in the cylinder 3, and meanwhile, the piston head 501 is in contact with the inner wall of the cylinder 3 and can slide; the lower end face of the limit plate 6 is fixed with a cushion 601, and the cushion 601 can realize a cushioning effect when contacting with the cylinder 3.

After the installation of the tension spring body 1 is completed, in the practical use process, when the tension spring body 1 suddenly bears a large external force, the installation seat 2 moves to extrude the tension spring body 1 to bear the force, and simultaneously the sliding rod 5 is driven to move, the piston head 501 slides in the cylinder 3 at the moment, thereby realizing the compression effect on the air inside the cylinder 3, at the moment, the compressed air is slowly discharged through the air outlet hole 4, thereby the internal air pressure of the cylinder 3 can be increased within a certain time, the action of the air pressure is passed through, the action force borne by the tension spring body 1 can be buffered, thereby effectively avoiding the tension spring body 1 from generating bending deformation or fracture due to the external force, further ensuring the service life of the tension spring body 1, and when the sliding rod 5 moves, the limiting plate 6 is driven to move simultaneously, when the cushion 601 is in contact with the cylinder 3, the protection effect can be realized, the limiting plate 6 is prevented from colliding with the cylinder 3 to cause damage, and the limiting plate 6 is limited at the moment, thereby effectively avoiding the tension spring body 1 from being excessively contracted and damaged.

The movable plate 7 is provided with a convex shaft 701 and a sliding plate 702; the protruding shaft 701 is fixed on the movable plate 7, and the protruding shaft 701 is nested in the groove on the mounting base 2 and can slide; the sliding plate 702 is fixed on the lower end surface of the movable plate 7, and the sliding plate 702 is nested in the groove on the mounting seat 2 and can slide; a connecting rod 9 is also vertically fixed on the lower end face of the movable plate 7, the connecting rod 9 is in sliding connection with the mounting base 2, and the lower end of the connecting rod 9 is nested in the sliding groove 1201 and can slide; the disc 12 is provided with sliding grooves 1201, the sliding grooves 1201 are of an arc-shaped structure, the sliding grooves 1201 are distributed at equal angles relative to the circle center of the disc 12, and the sliding grooves 1201 are provided with four groups.

When the variable cross-section tension spring is used, firstly, adjustment is carried out according to actual cross-section installation requirements, the rotating shaft 10 is rotated, the disc 12 can be driven to rotate, the sliding groove 1201 is driven to rotate, the arc-shaped structure of the sliding groove 1201 and the sliding effect between the sliding groove 1201 and the connecting rod 9 are matched, the connecting rod 9 can be forced to move, the sliding effect between the connecting rod 9 and the mounting seat 2 is matched, the connecting rod 9 can be made to do stable linear motion, when the connecting rod 9 moves, the movable plate 7 is driven to move simultaneously, the movable plate 7 and the sliding effect between the sliding plate 702 and the mounting seat 2 are matched, the moving stability of the movable plate 7 can be ensured, the movable plate 7 can be prevented from being separated from the mounting seat 2 through the effect of the convex shaft 701, when the movable plate 7 moves, the threaded hole 8 is simultaneously driven to move, the adjustment effect on the position of the threaded hole 8 is realized, the bolt is matched through the threaded hole 8 to be fixed, so that the device can adapt to installation of the tension spring body 1 with different cross sections, the adaptability of the device is improved, after the adjustment is finished, the adjustment effect of the extrusion force of the movable plate 7 and the adjustment effect of the threaded hole 8 can be realized through the positioning screw rod 11.

The working principle is as follows: as shown in fig. 1 to 5, when the variable cross-section tension spring is used, firstly, adjustment is performed according to actual cross-section installation requirements, by rotating the rotating shaft 10, the disc 12 and the sliding groove 1201 can be driven to rotate, and by matching with sliding action between the sliding groove 1201 and the connecting rod 9, the connecting rod 9 and the movable plate 7 can be moved, so that adjustment of the positions of the movable plate 7 and the threaded hole 8 is achieved, fixing is performed by matching bolts with the threaded holes 8, so as to adapt to installation of the tension spring body 1 with different cross sections, adaptability of the device is improved, after the tension spring body 1 is installed, in an actual use process, when the tension spring body 1 suddenly bears a large external force, the mounting seat 2 is moved to extrude the tension spring body 1 to bear force, and at the same time, the sliding rod 5 is driven to move, and at the piston head 501 slides in the cylinder 3, so that compression of air inside the cylinder 3 is achieved, at this time, compressed air is slowly discharged through the air outlet hole 4, so that internal air pressure inside the cylinder 3 can be increased within a certain time, and the action of the tension spring body 1 can be buffered, thereby effectively avoiding the deformation of the variable cross-section of the spring due to bending or the deformation of the external force.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A variable cross-section tension spring comprises a tension spring body (1), wherein mounting seats (2) are fixed on the upper end face and the lower end face of the tension spring body (1), a cylinder (3) is fixed on the upper end face of the lower mounting seat (2), a sliding rod (5) is connected onto the cylinder (3), and the upper end of the sliding rod (5) is fixed on the lower end face of the upper mounting seat (2);

it is characterized by also comprising:

the air outlet hole (4) is formed in the lower side surface of the cylinder (3), and slow exhaust can be achieved through the air outlet hole (4);

the limiting plate (6) is fixed on the sliding rod (5), and the compression deformation degree of the tension spring body (1) can be limited through the limiting plate (6);

the movable plate (7) is nested in the groove at the upper end of the mounting seat (2) and can slide, three groups of threaded holes (8) are formed in the movable plate (7) at equal intervals, and the movable plate can be fixed by matching the threaded holes (8) with bolts;

rotation axis (10), the bearing is connected on mount pad (2), and has positioning screw (11) through threaded connection on rotation axis (10) to positioning screw (11) and mount pad (2) contact produce the extrusion force and can realize the positioning action, still be fixed with disc (12) on rotation axis (10), and disc (12) set up in mount pad (2).

2. The variable cross-section tension spring as claimed in claim 1, wherein: the sliding rod (5) penetrates through the upper end face of the cylinder (3) and can slide up and down, a piston head (501) is further fixed at the lower end of the sliding rod (5), the piston head (501) is arranged in the cylinder (3), and meanwhile the piston head (501) is in contact with the inner wall of the cylinder (3) and can slide.

3. The variable cross-section tension spring as claimed in claim 1, wherein: a buffer pad (601) is fixed on the lower end face of the limiting plate (6), and the buffer pad (601) can achieve a buffer effect when contacting with the cylinder (3).

4. The variable cross-section tension spring as claimed in claim 1, wherein: a convex shaft (701) and a sliding plate (702) are arranged on the movable plate (7);

the convex shaft (701) is fixed on the movable plate (7), and the convex shaft (701) is nested in the groove on the mounting seat (2) and can slide;

the sliding plate (702) is fixed on the lower end face of the movable plate (7), and the sliding plate (702) is nested in the groove on the mounting seat (2) and can slide.

5. The variable cross-section tension spring as claimed in claim 1, wherein: the lower end face of the movable plate (7) is also vertically fixed with a connecting rod (9), the connecting rod (9) is in sliding connection with the mounting seat (2), and the lower end of the connecting rod (9) is nested in the sliding groove (1201) and can slide.

6. The variable cross-section tension spring as claimed in claim 1, wherein: the disc (12) is provided with sliding grooves (1201), the sliding grooves (1201) are of arc-shaped structures, the sliding grooves (1201) are distributed at equal angles relative to the circle center of the disc (12), and the sliding grooves (1201) are provided with four groups.