阅读说明：本技术 一种调压弹簧 (Pressure regulating spring ) 是由 王刘恩 计翔宇 于 2021-08-13 设计创作，主要内容包括：本发明提供了一种调压弹簧,包括弹簧本体,所述弹簧本体的上方设置有调压机构,所述调压机构包括基板,所述基板的底端与弹簧本体的顶端固定连接,所述基板的顶部开设有活动仓,所述基板的侧边开设有圈槽,所述基板的内部上下贯穿有延伸杆,所述延伸杆的顶端且位于基板的上方固定连接有旋盖,所述旋盖套设在基板的外表面,所述旋盖内表面的下端固定连接有限位环,通过延伸杆位于活动仓内部的一端贯穿旋盖与电机的输出轴相连,使得在启动电机时能够带动延伸杆和固定在延伸杆的底端的限位杆,而在限位杆旋转的过程中,弹簧本体上端的部分被收拢挤压在限位杆与基板之间,从而实现对弹簧的调压,可以通过收拢不同长度的弹簧本体来精准的调压。(The invention provides a pressure regulating spring, which comprises a spring body, wherein a pressure regulating mechanism is arranged above the spring body, the pressure regulating mechanism comprises a base plate, the bottom end of the base plate is fixedly connected with the top end of the spring body, a movable bin is arranged at the top of the base plate, a ring groove is arranged on the side edge of the base plate, an extension rod penetrates through the base plate from top to bottom, a spiral cover is fixedly connected at the top end of the extension rod and positioned above the base plate, the spiral cover is sleeved on the outer surface of the base plate, a limit ring is fixedly connected at the lower end of the inner surface of the spiral cover, one end of the extension rod positioned in the movable bin penetrates through the spiral cover and is connected with an output shaft of a motor, so that the extension rod and the limit rod fixed at the bottom end of the extension rod can be driven when the motor is started, and the part at the upper end of the spring body is folded and extruded between the limit rod and the base plate in the rotating process of the limit rod, thereby realize the pressure regulating to the spring, can come accurate pressure regulating through drawing in the spring body of different length in.)

1. A pressure regulating spring is characterized in that: comprises a spring body (1), a pressure regulating mechanism (2) is arranged above the spring body (1), the pressure regulating mechanism (2) comprises a base plate (3), the bottom end of the base plate (3) is fixedly connected with the top end of the spring body (1), a movable bin (4) is arranged at the top of the base plate (3), a circular groove (5) is arranged on the side surface of the base plate (3), a rotary cover (7) is sleeved on the outer surface of the base plate (3), a motor (19) is fixedly connected with the upper end of the rotary cover (7), an extension rod (6) penetrates through the inner part of the base plate (3) from top to bottom, the top end of the extension rod (6) is positioned above the base plate (3) and fixedly connected with the top end of the rotary cover (7) and the output shaft of the motor (19), the outer surface of the extension rod (6) is movably connected with the inner wall of the rotary cover (7), and a limit ring (8) is fixedly connected with the lower end of the inner surface of the rotary cover (7), spacing ring (8) are located the inside in circle groove (5), spiral cover (7) are connected with base plate (3) rotation through circle groove (5) and spacing ring (8), the bottom both sides sliding connection of extension rod (6) has gag lever post (9).

2. Pressure regulating spring according to claim 1, characterized in that the spring body (1) is arranged in a tower-shaped configuration, the distance between adjacent surfaces of the spring body (1) is larger than the diameter of the outer limiting rod (9), the base plate (3) is arranged in a cylindrical configuration, and the diameter of the base plate (3) is larger than the diameter of the spring body (1).

3. The pressure regulating spring as claimed in claim 1, wherein: the inner surface of the movable bin (4) is fixedly connected with a one-way stop block (10), the outer surface of the extension rod (6) and the inner part of the movable bin (4) are sleeved with a turntable (11), a groove (12) is formed in the side edge of the rotary disc (11), a baffle plate (13) is rotatably connected to the top end of the inner surface of the groove (12), one side of the baffle plate (13) close to the inner wall of the groove (12) is fixedly connected with a second electromagnet (21), a first electromagnet (20) is fixedly connected with the inner wall of the groove (12), an elastic plate (14) is arranged inside the groove (12) and between the second electromagnet (21) and the first electromagnet (20), a control box (22) is arranged on one side of the inner wall of the groove (12) and on the left side of the first electromagnet (20), the first electromagnet (20) and the second electromagnet (21) are electrically connected with the control box (22).

4. The pressure regulating spring as claimed in claim 3, wherein: the elastic plate (14) is set to be a triangular plate, and the elastic plate (14) is made of spring aluminum.

5. The pressure regulating spring as claimed in claim 1, wherein: spout (61) have been seted up to the bottom both sides of extension rod (6), sliding connection has gag lever post (9) in spout (61), cylindrical hole (62) have been seted up to the inner wall of spout (61), be provided with spring (63) in cylindrical hole (62), the both ends of spring (63) respectively with gag lever post (9) fixed connection, one side that gag lever post (6) are bellied and are close to spring body (1) sets up to the arc structure.

6. The pressure regulating spring as claimed in claim 1, wherein: the spring is characterized in that an adjusting block (15) is arranged below the spring body (1), a spring hole (16) matched with the spring body (1) is formed in the adjusting block (15), and the lower end of the spring body (1) is located in the spring hole (16).

7. The pressure regulating spring as claimed in claim 6, wherein: transverse groove (17) have been seted up to regulating block (15) inside, transverse groove (17) are provided with the multiunit, the below the inside of transverse groove (17) is run through and is had picture peg (18).

Technical Field

The invention relates to the technical field of springs, in particular to a pressure regulating spring.

Background

The spring is a mechanical part working by elasticity, is generally made of spring steel, is used for controlling the movement of a machine member, relaxing impact or vibration, storing energy, measuring the magnitude of force and the like, and is widely used in machines and instruments.

In the process of implementing the invention, the following problems in the prior art are found to be at least not solved: all need use the pressure regulating spring on present shock mitigation system's the regulator, this pressure regulating spring suit is on the screw rod, and through rotating the pressure regulating nut, the pressure regulating nut compression pressure regulating spring realizes this shock mitigation system's pressure regulation, but this kind of pressure regulating spring is difficult to the accurate control pressure regulating spring.

To this end, a pressure regulating spring is proposed.

Disclosure of Invention

The invention aims to provide a pressure regulating spring, and the technical problem to be solved by the invention is that the pressure regulating spring is required to be used on a pressure regulating device of the existing damping system, the pressure regulating spring is sleeved on a screw rod, and the pressure regulating nut compresses the pressure regulating spring by rotating the pressure regulating nut to realize the pressure regulation of the damping system, but the pressure regulating spring is difficult to accurately control the pressure regulating spring.

A pressure regulating spring comprises a spring body, a pressure regulating mechanism is arranged above the spring body, the pressure regulating mechanism comprises a base plate, the bottom end of the base plate is fixedly connected with the top end of the spring body, the top of the base plate is provided with a movable bin, the side surface of the base plate is provided with a ring groove, the outer surface of the base plate is sleeved with a spiral cover, the upper end of the rotary cover is fixedly connected with a motor, an extension rod penetrates through the upper part and the lower part of the inner part of the base plate, the top end of the extension rod is positioned above the base plate and penetrates through the top end of the rotary cover to be fixedly connected with an output shaft of the motor, the outer surface of the extension rod is movably connected with the inner wall of the screw cap, the lower end of the inner surface of the screw cap is fixedly connected with a limit ring, the spacing ring is located the inside in circle groove, the spiral cover is connected with the base plate rotation through circle groove and spacing ring, the bottom both sides sliding connection of extension rod has the gag lever post.

Through adopting above-mentioned technical scheme, through setting up the pressure regulating mechanism in spring body top, utilize circle groove and spacing ring, limit the distance of spiral cover and base plate, the one end that is located the activity storehouse inside through the extension rod runs through the output shaft that the spiral cover runs through spiral cover and motor and links to each other, make can drive the extension rod and fix the gag lever post rotation in the extension rod bottom when starter motor, and at the rotatory in-process of gag lever post, the part of spring body upper end is drawn in the extrusion between gag lever post and base plate, thereby realize the pressure regulating to the spring body, and can come accurate pressure regulating through the spring body that draws in different length in.

Preferably, the spring body is arranged in a tower-shaped structure, the distance between the adjacent surfaces of the spring body is larger than the diameter of the outer limiting rod, the base plate is arranged in a cylindrical shape, and the diameter of the base plate is larger than that of the spring body.

Through adopting above-mentioned technical scheme, through setting up the spring body into tower type structure, can be so that the spring body is more stable at the in-process structure of compression, distance setting between the adjacent surface through with the spring body is greater than the diameter of limit outer rod, can prevent that the spring body from making the spring body take place to warp at extruded in-process, through setting up the base plate into cylindrically, thereby can make and observe the pressure regulating progress more easily at the pressure regulating in-process, and set up the diameter that is greater than the spring body with the diameter of base plate, can avoid the spring body integument to draw in the back in, from the side roll-off of base plate, lead to losing the function of pressure regulating.

Preferably, the one-way dog of interior fixed surface in activity storehouse is connected with, the surface of extension rod and the inside cover that is located the activity storehouse are equipped with the carousel, the side of carousel is seted up flutedly, the top of recess internal surface is rotated and is connected with the holding block, one side fixedly connected with second electro-magnet that the holding block is close to the recess inner wall, the first electro-magnet of inner wall fixedly connected with of recess, the inside of recess just is located and is provided with the diving board between second electro-magnet and the first electro-magnet, one side of recess inner wall and the left side that is located first electro-magnet are provided with the control box, first electro-magnet and second electro-magnet all link to each other with the control box electrical property.

By adopting the technical scheme, the surface of the extension rod is sleeved with the rotary disc, the groove is formed in the rotary disc, the baffle plate is pushed outwards by utilizing the elasticity of the elastic plate, and the extension rod can only rotate in a single direction by the aid of the one-way baffle block arranged on the inner surface of the movable bin and the baffle plate in a matching manner, so that the situation that when the motor stops rotating, the pressure regulating fails because the folded spring body pushes the baffle plate to reset under the action of restoring force can be avoided; through being provided with first electro-magnet, second electro-magnet and control box at the inner wall of recess, when the elasticity of spring body needs to resume, can be through the first electro-magnet of controller control and second electro-magnet and get electric and magnetism and inhale mutually, the second electro-magnet drives the resistance plate compression diving board and makes the resistance plate retract in the recess to the resistance plate does not cooperate with one-way dog, makes the extension rod can two-way rotation carry out two-way regulation to the elasticity of spring body.

Preferably, the elastic plate is a triangular plate, and the elastic plate is made of spring aluminum.

Through adopting above-mentioned technical scheme, through setting up the diving board into the set-square and adopt spring aluminium for the diving board can promote the resistance plate and outwards rotate and one-way baffle block, and avoid producing the influence to the direction of magnetic force and dynamics.

Preferably, the spout has been seted up to the bottom both sides of extension rod, sliding connection has the gag lever post in the spout, cylindrical hole has been seted up to the inner wall of spout, the cylindrical hole is provided with the spring, the both ends of spring respectively with gag lever post fixed connection, the bellied one side of gag lever post and the one side that is close to the spring body set up to the arc structure.

Through adopting above-mentioned technical scheme, through being provided with the spring in the cylindricality hole, and at the both ends fixedly connected with gag lever post of spring for the gag lever post can make a round trip to slide along the inner wall of spout at the pivoted in-process, through setting up the arc structure, can increase the area of contact of gag lever post and spring body, can prevent that the spring body from being out of shape because of the stress point undersize extrusion at the extruded in-process.

Preferably, an adjusting block is arranged below the spring body, a spring hole matched with the spring body is formed in the adjusting block, and the lower end of the spring body is located in the spring hole.

Through adopting above-mentioned technical scheme, set up the regulating block through the below at the spring body, and set up the spring hole in the inside of regulating block for the spring can run through and get into in the spring hole, thereby has reduced the purpose that the spring body exposes outside length realization pressure regulating.

Preferably, the inside of regulating block has seted up the transverse groove, the transverse groove is provided with the multiunit, the below the inside of transverse groove is run through there is the picture peg.

Through adopting above-mentioned technical scheme, through seting up the horizontal slot at the spring body, the cooperation picture peg inserts the different horizontal slot insides and adjusts the spring body and is located the downthehole length of spring to this carries out the pressure regulating to the spring body.

Compared with the prior art, the invention has the beneficial effects that:

1. through adopting above-mentioned technical scheme, through setting up the pressure regulating mechanism in spring body top, utilize circle groove and spacing ring, limit the distance of spiral cover and base plate, the one end that is located movable bin inside through the extension rod runs through the output shaft that the spiral cover runs through spiral cover and motor and links to each other, make can drive the extension rod and fix the gag lever post in the extension rod bottom when starter motor, and at the rotatory in-process of gag lever post, the part of spring body upper end is drawn in the extrusion between gag lever post and base plate, thereby realize the pressure regulating to the spring body, and can come accurate pressure regulating through the spring body that draws in different length in.

2. The rotary disc is sleeved on the surface of the extension rod, the groove is formed in the rotary disc, the elastic plate is used for pushing the baffle outwards, the baffle is matched with the one-way baffle through the one-way baffle arranged on the inner surface of the movable bin, the extension rod can only rotate in one way, and therefore the situation that the baffle is pushed to reset under the restoring force effect due to the fact that the spring body is folded in when the rotary spiral cover is rotated can be avoided, and pressure regulating failure is caused.

3. Through being provided with first electro-magnet and control box at the inner wall of recess, when the elasticity of spring body needs to resume, can be through the first electro-magnet of controller control and second electro-magnet and get electric and magnetism and inhale mutually, the second electro-magnet drives the resistance board compression diving board and makes the resistance board retract to the recess in to the resistance board does not cooperate with one-way dog, makes the extension rod can two-way rotation carry out two-way regulation to the elasticity of spring body.

Drawings

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

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic structural diagram of a spring body and a pressure regulating mechanism according to the present invention;

FIG. 3 is a top cross-sectional view of the pressure regulating mechanism of the present invention;

FIG. 4 is a schematic diagram of the construction of the pressure regulating block and spring hole of the present invention;

FIG. 5 is a schematic cross-sectional view of the extension rod and the stop rod of the present invention.

Description of reference numerals:

1. a spring body; 2. a pressure regulating mechanism; 3. a substrate; 4. a movable bin; 5. a ring groove; 6. an extension rod; 61. a chute; 62. a cylindrical hole; 63. a spring; 7. screwing a cover; 8. a limiting ring; 9. a limiting rod; 10. a one-way stopper; 11. a turntable; 12. a groove; 13. blocking the plate; 14. a spring plate; 15. an adjusting block; 16. a spring hole; 17. a transverse groove; 18. inserting plates; 19. a motor; 20. a first electromagnet; 21. a second electromagnet; 22. and a control box.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, the present invention provides a technical solution:

the utility model provides a pressure regulating spring, including spring body 1, spring body 1's top is provided with pressure regulating mechanism 2, pressure regulating mechanism 2 includes base plate 3, base plate 3's bottom and spring body 1's top fixed connection, movable bin 4 has been seted up at base plate 3's top, circle groove 5 has been seted up to base plate 3's side surface, base plate 3's surface cover is equipped with spiral cover 7, spiral cover 7's upper end fixedly connected with motor 19, the extension rod 6 has been run through from top to bottom in base plate 3's inside, the top of extension rod 6 and the top that is located base plate 3 run through spiral cover 7's top and motor 19's output shaft fixed connection, the surface of extension rod 6 and spiral cover 7's inner wall swing joint, the lower extreme fixedly connected with spacing ring 8 of spiral cover 7 internal surface, spacing ring 8 is located the inside of circle groove 5, spiral cover 7 rotates through circle groove 5 and spacing ring 8 and base plate 3 to be connected, the bottom both sides sliding connection of extension rod 6 has gag lever 9.

Through adopting above-mentioned technical scheme, through setting up pressure regulating mechanism 2 in spring body 1 top, utilize circle groove 5 and spacing ring 8, limit spiral cover 7 and base plate 3's distance, the one end that is located movable bin 4 inside through extension rod 6 runs through spiral cover 7 and motor 19's output shaft and links to each other, make can drive extension rod 6 and fix the gag lever post 9 rotation in extension rod 6 bottom when starter motor 19, and at the rotatory in-process of gag lever post 9, the part of spring body 1 upper end is drawn in the extrusion and is between gag lever post 9 and base plate 3, thereby realize the pressure regulating to spring body 1, and can come accurate pressure regulating through the spring body 1 of drawing in different length in.

Specifically, the spring body 1 is arranged to be of a tower-shaped structure, the distance between the adjacent surfaces of the spring body 1 is larger than the diameter of the outer limiting rod 9, the base plate 3 is arranged to be cylindrical, and the diameter of the base plate 3 is larger than that of the spring body 1.

Through adopting above-mentioned technical scheme, through setting up spring body 1 to tower type structure, can be so that spring body 1 is more stable at the in-process structure of compression, distance setting between the adjacent surface through with spring body 1 is greater than the diameter of outer pole 9 of limit, can prevent that spring body 1 from making spring body 1 take place to warp at the extruded in-process, through setting up base plate 3 into cylindrically, thereby can make and observe the pressure regulating progress more easily at the pressure regulating in-process, and set up the diameter that is greater than spring body 1 with base plate 3, can avoid spring body 1 to be drawn in the back, from base plate 3's side roll-off, lead to losing the function of pressure regulating.

Concretely, the one-way dog 10 of interior fixed surface of activity storehouse 4, the surface of extension rod 6 and the inside cover that is located activity storehouse 4 are equipped with carousel 11, recess 12 has been seted up to carousel 11's side, the top of recess 12 internal surface is rotated and is connected with the resistance board 13, one side fixedly connected with second electro-magnet 21 that resistance board 13 is close to recess 12 inner wall, the first electro-magnet 20 of inner wall fixedly connected with of recess 12, recess 12's inside just is located and is provided with diving board 14 between second electro-magnet 21 and the first electro-magnet 20, one side of recess 12 inner wall and the left side that is located first electro-magnet 20 are provided with control box 22, first electro-magnet 20 and second electro-magnet 21 all link to each other with control box 22 electrical property.

By adopting the technical scheme, the surface of the extension rod 6 is sleeved with the rotary disc 11, the groove 12 is formed in the rotary disc 11, the baffle 13 is pushed out by utilizing the elasticity of the material of the elastic plate 14, and the extension rod 6 can only rotate in a single direction by matching the baffle 13 with the one-way baffle 10 arranged on the inner surface of the movable bin 4, so that the situation that when the motor 19 stops rotating, the pressure regulating fails because the folded spring body 1 pushes the baffle 13 to reset under the action of restoring force can be avoided; through setting up first electro-magnet 20 and control box 22 at the inner wall of recess 12, when the elasticity of spring body 1 needs to resume, can be through the first electro-magnet 20 of controller control and second electro-magnet 21 get electric and magnetism attract mutually, second electro-magnet 21 drives the resistance board 13 and compresses diving board 14 and make resistance board 13 retract in recess 12 to resistance board 13 does not cooperate with one-way dog 10, makes extension rod 6 can two-way rotation carry out two-way regulation to the elasticity of spring body 1.

Specifically, the elastic plate 14 is a triangular plate, and the elastic plate 14 is made of spring aluminum.

Through adopting above-mentioned technical scheme, through setting up springboard 14 into the set-square and adopt spring aluminium for springboard 14 can promote the resistance board 13 outwards to rotate and the one-way baffle block, and avoid producing the influence to the direction of magnetic force and dynamics.

Concrete, spout 61 has been seted up to extension rod 6's bottom both sides, and sliding connection has gag lever post 9 in spout 61, and cylindrical hole 62 has been seted up to spout 61's inner wall, is provided with spring 63 in the cylindrical hole 62, spring 63's both ends respectively with gag lever post 9 fixed connection, and the bellied one side of gag lever post 6 and the one side that is close to spring body 1 sets up to the arc structure.

Through adopting above-mentioned technical scheme, through be provided with spring 63 in cylindrical hole 62, and at spring 63's both ends fixedly connected with gag lever post 9 for gag lever post 9 can make a round trip to slide along the inner wall of spout 61 at the pivoted in-process, through setting up the arc structure, can increase the area of contact of gag lever post 9 and spring body 1, can prevent that spring body 1 from being out of shape because of the stress point undersize extrusion in extruded process.

Specifically, an adjusting block 15 is arranged below the spring body 1, a spring hole 16 matched with the spring body 1 is formed in the adjusting block 15, and the lower end of the spring body 1 is located in the spring hole 16.

Through adopting above-mentioned technical scheme, set up regulating block 15 through the below at spring body 1, and set up spring hole 16 in regulating block 15's inside for the spring can run through and get into in spring hole 16, thereby has reduced the purpose that spring body 1 exposes outside length realization pressure regulating.

Specifically, transverse grooves 17 are formed in the adjusting blocks 15, multiple groups of transverse grooves 17 are formed in the transverse grooves 17, and inserting plates 18 penetrate through the lower transverse grooves 17.

Through adopting above-mentioned technical scheme, through offering transverse slot 17 at spring body 1, the length that spring body 1 is located spring hole 16 is adjusted to inside different transverse slot 17 of cooperation picture peg 18 insertion to this carries out the pressure regulating to spring body 1.

The working principle is as follows: the distance between the spiral cover 7 and the base plate 3 is limited by the pressure regulating mechanism 2 arranged above the spring body 1 and the ring groove 5 and the limiting ring 8, one end of the extension rod 6 positioned in the movable bin 4 penetrates through the spiral cover 7 to be connected with an output shaft of the motor 19, so that the extension rod 6 and the limiting rod 9 fixed at the bottom end of the extension rod 6 can be driven to rotate when the motor 19 is started, and the part at the upper end of the spring body 1 is furled and extruded between the limiting rod 9 and the base plate 3 in the rotating process of the limiting rod 9, so that the pressure regulation of the spring body 1 is realized, and the accurate pressure regulation can be realized by furling the spring bodies 1 with different lengths;

the surface of the extension rod 6 is sleeved with the rotary disc 11, the rotary disc 11 is internally provided with the groove 12, the baffle 13 is pushed out by utilizing the material elasticity of the elastic plate 14, the extension rod 6 can only rotate in a single direction by the aid of the one-way baffle 10 arranged on the inner surface of the movable bin 4 and matching with the baffle 13, the first electromagnet 20 and the control box 22 are arranged on the inner wall of the groove 12, when the elasticity of the spring body 1 needs to be recovered, the first electromagnet 20 and the second electromagnet 21 can be controlled to be electrified and magnetically attracted by the controller, the second electromagnet 21 drives the baffle 13 to compress the elastic plate 14, so that the baffle 13 retracts into the groove 12, the baffle 13 is not matched with the one-way baffle 10, the extension rod 6 can rotate in two directions to adjust the elasticity of the spring body 1 in two directions, the adjusting block 15 is arranged below the spring body 1, and the spring 15 is internally provided with the hole 16, make the spring can run through and get into in the spring hole 16, through seting up transverse groove 17 at spring body 1, the length that spring body 1 is located spring hole 16 is adjusted to inside different transverse groove 17 of cooperation picture peg 18 insertion to the length that spring body 1 exposes outside has been reduced and the purpose of pressure regulating is realized.

The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.