A shock absorbing device with disc spring group structure

Abstract

The present invention relates to the technical field of butterfly springs, and specifically to a shock absorbing device of a disc spring group structure, comprising a shaft body, wherein the shaft body comprises a base, a top seat and a sleeve, wherein the number of the sleeves is one or more, and two adjacent sleeves are threadedly connected, wherein the base and the top seat are threadedly connected to the bottom and top ends of the sleeves respectively, and a spring pad is slidably sleeved on the sleeve. The shock absorbing device of the disc spring group structure is different from the conventional method of changing the elasticity of the disc spring in that the conventional disc spring is to replace the spring pad or the shaft body of different lengths, but when replacing the shaft body, the entire shaft body needs to be removed and then replaced, while the present structure only needs to insert the top seat, and then install or remove the multi-section sleeves, which is more convenient than the conventional replacement method.

Description

Technical Field

[0001] The invention relates to the technical field of disc springs, in particular to a shock absorbing device with a disc spring group structure. Background Art

[0002] Disc springs are conical discs that can be used individually or in series or in parallel. They bear static or dynamic loads acting in the axial direction at the upper inner edge and the lower outer edge. They are deformed after being compressed until they are flattened, storing energy as a live load. When necessary, they are automatically converted into additional compression loads required for sealing to reduce the continuous tightening requirements of gaskets and packings during use. Disc springs are special springs that are conical in the axial direction and bear loads. After being deformed under load, they store a certain amount of potential energy. When the bolts become loose, the disc springs release part of the potential energy to keep the pressure between the flange connections to meet the sealing requirements. The stress distribution of disc springs decreases evenly from the inside to the outside, which can achieve the effect of low stroke and high compensation force.

[0003] The most representative feature of butterfly springs during use is their controllable elastic coefficient. The conventional method of changing the elasticity of butterfly springs is to replace the spring pad or replace the shaft body of different lengths. However, when replacing the shaft body, the entire shaft body needs to be removed and then replaced. The whole process requires overall disassembly and then installation, which is very cumbersome. Summary of the invention

[0004] The object of the present invention is to provide a shock absorbing device with a disc spring group structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A shock absorbing device of a disc spring group structure, comprising a shaft body, the shaft body comprising a base, a top seat and a sleeve, the number of the sleeves is one or more, two adjacent sleeves are threadedly connected, the base and the top seat are respectively threadedly connected to the bottom end and the top end of the sleeve, and a spring pad is slidably sleeved on the sleeve;

[0007] The outer wall of the sleeve is provided with a positioning slot, a lifting plate is slidably connected in the positioning slot, a contraction component is arranged inside the sleeve, the top end of the contraction component is threadedly connected to the bottom end of the lifting plate, the bottom end of the contraction component is threadedly connected to the top end of the base, a pressure plate is slidably connected to the sleeve, and the pressure plate and the lifting plate are connected via a connecting component;

[0008] Preferably, the connecting assembly comprises a receiving groove in the pressure plate, a card block is slidably connected in the receiving groove, a positioning switch is slidably connected to the upper surface of the pressure plate, a plurality of limit grooves are provided on the pressure plate, a connecting block is fixedly connected between the positioning switch and the card block, and the connecting block is slidably connected in the limit groove;

[0009] Preferably, the positioning switch is threadedly connected with a screw, and the positioning switch and the pressure plate are fixedly connected by the screw;

[0010] Preferably, the contraction assembly comprises a shell, a connecting plate is slidably connected inside the shell, and a tension spring is arranged between two adjacent connecting plates;

[0011] Preferably, the inner wall of the shell is fixedly connected with a guide rail, and the connecting plate is provided with a groove adapted to the guide rail;

[0012] Preferably, the inner wall of the shaft sleeve is fixedly connected with a positioning tube, and the housing is slidably connected in the positioning tube;

[0013] Preferably, a threaded head is provided at the top end of the shell, and a connecting terminal is provided at the bottom end of the shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The shock absorbing device of this disc spring group structure is different from the conventional disc spring in the method of changing the elasticity. The conventional disc spring is to replace the spring pad or replace the shaft body of different lengths. However, when replacing the shaft body, the entire shaft body needs to be removed and then replaced. The present structure only needs to insert the top seat and then install or remove the multi-section sleeve, which is more convenient than the conventional replacement method.

[0016] 2. In order to avoid loose connection between multiple spring pads during shaft replacement, the shock absorbing device of the disc spring group structure is provided with a contraction component to pull the lifting plate to squeeze the pressure plate, and the pressure plate squeezes the spring pads to make the spring pads fit tightly.

[0017] 3. The shock absorbing device of the disc spring group structure adopts a multi-stage design. Even if the length of the shaft body is changed, the functions of the adjustable spring can be diversified by arranging a lifting plate and a contraction component that can be connected to the pressure plate in each sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the shaft body of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the shaft sleeve of the present invention;

[0021] Figure 4 It is a structural cross-sectional view of the shaft sleeve of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified view of the structure at center A;

[0023] Figure 6 It is a structural cross-sectional view of the shrinkage component of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0028] See also Figure 1-Figure 6 As shown, a technical solution provided by the present invention is:

[0029] A shock absorbing device of a disc spring group structure includes a shaft body 100, the shaft body 100 includes a base 110, a top seat 120 and a sleeve 200, the number of the sleeves 200 is one or more, two adjacent sleeves 200 are threadedly connected, the base 110 and the top seat 120 are respectively threadedly connected to the bottom end and the top end of the sleeve 200, and a spring pad 300 is slidably sleeved on the sleeve 200;

[0030] A positioning groove 210 is provided on the outer wall of the sleeve 200, and a lifting plate 220 is slidably connected in the positioning groove 210. A shrinking assembly 400 is arranged inside the sleeve 200, and the top end of the shrinking assembly 400 is threadedly connected to the bottom end of the lifting plate 220, and the bottom end of the shrinking assembly 400 is threadedly connected to the top end of the base 110. A pressure plate 130 is slidably connected to the sleeve 200, and the pressure plate 130 and the lifting plate 220 are connected via a connecting assembly 500. The plurality of shaft sleeves 200 are connected to form an installation shaft of the spring pad 300, and then the pressure plate 130 is sleeved on the installation shaft and the pressure plate 130 is pushed onto the uppermost shaft sleeve 200, and the pressure plate 130 is connected to the lifting plate 220 through the connecting assembly 500, and then the spring pad 300 is installed in sequence. After installing an appropriate amount of spring pads 300, the spring pad 300 is pushed toward the pressure plate 130, and then the base 110 is tightened to the bottom end of the lowermost shaft sleeve 200, and under the action of the contraction assembly 400, it will pull downward and pull the lifting plate 220 downward, and the lifting plate 220 will apply a pulling force to the pressure plate 130, and the pressure plate 130 squeezes the spring pad 300 and presses the spring pads 300 together, so that when the elasticity of the butterfly spring needs to be adjusted, the shaft length can be increased more conveniently, and while increasing the shaft length, it can ensure in real time that the spring pads 300 are in a compressed state.

[0031] The connecting component 500 includes a storage groove 510 provided in the pressure plate 130, a block 520 is slidably connected in the storage groove 510, a positioning switch 530 is slidably connected to the upper surface of the pressure plate 130, and multiple groups of limit grooves 540 are provided on the pressure plate 130. A connecting block 550 is fixedly connected between the positioning switch 530 and the block 520. The connecting block 550 is slidably connected in the limit groove 540 to push the positioning switch 530. The block 520 is inserted under the lifting plate 220 through the connecting block 550, and the lifting plate 220 is pulled by the shrinking component 400 to squeeze the block 520, so that the pressure plate 130 squeezes the spring pad 300.

[0032] It should be noted that a screw 560 is threadedly connected to the positioning switch 530 , and the positioning switch 530 and the pressure plate 130 are fixedly connected by the screw 560 .

[0033] The shrinkage assembly 400 includes a shell 410, in which a connecting plate 420 is slidably connected, a tension spring 430 is arranged between two adjacent connecting plates 420, the inner wall of the shell 410 is fixedly connected to a guide rail 440, the connecting plate 420 is provided with a groove 450 adapted to the guide rail 440, the inner wall of the sleeve 200 is fixedly connected to a positioning tube 201, the shell 410 is slidably connected in the positioning tube 201, and the connecting plates 420 at both ends are pulled by the tension spring 430. The bottom connecting plate 420 is connected to the base 110 and cannot be moved, so the main pulling force of the tension spring 430 acts on the top connecting plate 420, pulling the lifting plate 220 on its top.

[0034] It should be noted that the top of the housing 410 is provided with a threaded head 460, and the bottom of the housing 410 is provided with a connecting terminal 470.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shock absorbing device of a disc spring group structure, comprising a shaft body (100), characterized in that: The shaft body (100) comprises a base (110), a top seat (120) and a shaft sleeve (200); the shaft sleeves (200) are provided in a plurality, two adjacent shaft sleeves (200) are threadedly connected to each other, the base (110) and the top seat (120) are respectively threadedly connected to the bottom and top ends of the shaft sleeves (200); a spring pad (300) is slidably sleeved on the shaft sleeve (200); The outer wall of the shaft sleeve (200) is provided with a positioning groove (210), and a lifting plate (220) is slidably connected in the positioning groove (210). A contraction component (400) is arranged inside the shaft sleeve (200), and the contraction component (400) includes a shell (410), and a connecting plate (420) is slidably connected in the shell (410). A tension spring (430) is arranged between two adjacent connecting plates (420). The top end of the contraction component (400) is threadedly connected to the bottom end of the lifting plate (220), and the bottom end of the contraction component (400) is threadedly connected to the top end of the base (110). A pressure plate (130) is slidably connected to the shaft sleeve (200), and the pressure plate (130) and the lifting plate (220) are connected via a connecting component (500). The connecting assembly (500) comprises a receiving groove (510) provided in a pressure plate (130), a block (520) slidably connected in the receiving groove (510), a positioning switch (530) slidably connected on the upper surface of the pressure plate (130), a plurality of groups of limiting grooves (540) provided on the pressure plate (130), a connecting block (550) fixedly connected between the positioning switch (530) and the block (520), the connecting block (550) slidably connected in the limiting groove (540), the positioning switch (530) is pushed, the block (520) is inserted under the lifting plate (220) through the connecting block (550), the lifting plate (220) is pulled by the shrinking assembly (400) to squeeze the block (520), and the pressure plate (130) squeezes the spring pad (300).

2. A shock absorbing device of a disc spring group structure according to claim 1, characterized in that: The positioning switch (530) is threadedly connected with a screw (560), and the positioning switch (530) and the pressure plate (130) are fixedly connected via the screw (560).

3. A shock absorbing device of a disc spring group structure according to claim 2, characterized in that: The inner wall of the housing (410) is fixedly connected with a guide track (440), and the connecting plate (420) is provided with a groove (450) adapted to the guide track (440).

4. The shock absorbing device of the disc spring group structure according to claim 3, characterized in that: The inner wall of the shaft sleeve (200) is fixedly connected with a positioning tube (201), and the housing (410) is slidably connected in the positioning tube (201).

5. The shock absorbing device of the disc spring group structure according to claim 1, characterized in that: The top end of the shell (410) is provided with a threaded head (460), and the bottom end of the shell (410) is provided with a connecting terminal (470).

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