Improved earthquake-resistant spring damper

Abstract

The utility model belongs to shock absorber technical field, concretely relates to improved earthquake -resistant spring shock absorber, and the upper limit side plate and the lower limit side plate have two groups, and symmetrically set up in shock absorber both sides, the upper limit side plate is fixedly connected with the top plate, and the structure is the box -like of outside opening, and the opening place is convenient for installation and dismounting anti -drop assembly, the lower limit side plate is fixedly connected with the bottom plate, and the structure is the box -like of outside and top opening, and the lower limit side plate middle part is provided with the diaphragm, anti -drop assembly has two groups, passes through the upper limit side plate bottom and the diaphragm same axis through -hole, connects the upper limit side plate, the lower limit side plate, limits the upper limit side plate from the lower limit side plate drop, and anti -drop assembly is not fixed on the upper limit side plate, the lower limit side plate, the top plate, the bottom plate. The utility model discloses that the structural strength is improved obviously, has guaranteed that the upper limit side plate cannot drop from the lower limit side plate, and the installation is more convenient, has reduced the processing difficulty, and the use reliability and life have greater improvement.

Description

Technical Field

[0001] This utility model belongs to the field of vibration damper technology, specifically relating to an improved earthquake-resistant spring vibration damper. Background Technology

[0002] Vibration dampers, also called shock absorbers or vibration isolators, are commonly used devices on equipment. Earthquake-resistant spring vibration dampers for equipment utilize steel helical springs as the primary elastic element, combined with a limiting mechanism. They reduce equipment vibration during normal operation and absorb impact during earthquakes through spring deformation and reduce displacement through the limiting structure, thus ensuring equipment stability and safety. The spring provides flexible support, isolating the equipment from the foundation and reducing vibration transmission. When an earthquake generates strong horizontal or vertical acceleration, the spring undergoes elastic deformation, working with rubber pads to absorb some energy. After the earthquake, the spring returns to its shape, returning the equipment to its initial position, ensuring continued operation.

[0003] Our company previously disclosed CN207005164U, a seismic-resistant spring vibration damper that uses two sets of symmetrical three-sided side plates to limit the displacement of the equipment relative to the mounting foundation. (See attached instruction manual.) Figure 1 As shown, the guide bolts are fixed to the base plate by welding to guide the vertical movement of the upper side plate and prevent the upper side plate from being detached from the coverage area of ​​the lower side plate by the spring force.

[0004] When conducting earthquake tests on large equipment, such as equipment weighing over 10 tons, under magnitude 8 earthquake conditions, existing earthquake-resistant spring vibration dampers show damage and deformation, exhibiting the following problems:

[0005] 1. The weld between the guide stud and the base plate broke.

[0006] 2. The side limit plate is bent and deformed, and the side rubber is crushed.

[0007] 3. The nut at the top of the guide stud is loose or has fallen off.

[0008] The aforementioned problems render existing earthquake-resistant spring vibration dampers ineffective in assisting large equipment to cope with strong earthquakes, and they urgently need improvement. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the existing technology and propose an improved earthquake-resistant spring damper, which thickens the side plate and improves the side plate structure and its connection with the guide stud, so that it can cope with stronger earthquakes.

[0010] The present invention adopts the following technical solution: an improved earthquake-resistant spring vibration damper, comprising:

[0011] The base plate is fixed to the equipment's mounting foundation.

[0012] The top plate is connected to the bottom of the equipment via adjusting bolts and lock nuts.

[0013] There is at least one spring, with both ends in contact with and partially enclosed by the top and bottom cups respectively. The bottom cup is fixed to the upper surface of the base plate, and the top cup is fixedly connected to the top plate; or the top cup is separate from the top plate, and the distance between the top cup and the top plate is adjustable due to the action of the adjusting bolt and the spring.

[0014] There are two sets of upper and lower limit side plates, symmetrically arranged on both sides of the shock absorber. The upper limit side plate is fixedly connected to the top plate and has a box-shaped structure with an outer opening, which facilitates the installation and removal of the anti-detachment component. The lower limit side plate is fixedly connected to the bottom plate and has a box-shaped structure with openings on the outer side and top. A transverse partition is provided in the middle of the lower limit side plate. The transverse partition is parallel to the bottom plate and at a certain distance. The lower limit side plate above the transverse partition covers the upper limit side plate and restricts its horizontal movement range.

[0015] There are two sets of anti-detachment components, which pass through the coaxial through holes on the bottom of the upper limit side plate and the transverse partition plate, connect the upper limit side plate and the lower limit side plate, and prevent the upper limit side plate from detaching from the lower limit side plate. The anti-detachment components are not fixed to the upper limit side plate, the lower limit side plate, the top plate, or the bottom plate.

[0016] According to another embodiment of the utility model or any of the foregoing embodiments, the thickness of each part of the upper limit side plate and the lower limit side plate is not less than 5mm. In existing spring shock absorbers, the thickness of the upper limit side plate and the lower limit side plate is about 3.5mm. This utility model increases the thickness of the side plates, preferably to 10mm, which, combined with the structure, greatly improves the deformation resistance.

[0017] According to another embodiment of the utility model or any of the foregoing embodiments, the spring vibration damper includes an anti-detachment component comprising a double-ended bolt, a limiting nut, and a limiting pin. The double-ended bolt passes through the through holes of the upper limiting side plate and the transverse partition plate. The threads of the double-ended bolt and the limiting nut are located in the upper limiting side plate cavity and the lower limiting side plate cavity, respectively. Pin holes are provided at both ends of the double-ended bolt. After the limiting nut is tightened, the limiting pin is inserted into the pin holes. A spring pin can be selected as the limiting pin for easy removal and placement, while also providing good anti-detachment effect. The main function of the limiting pin is to prevent the limiting nut from coming loose under strong vibration after long-term vibration, which would cause the upper limiting side plate to detach from the lower limiting side plate, resulting in horizontal displacement of the top plate and tipping of the spring vibration damper. A washer can be installed under the limiting nut for more even force distribution.

[0018] According to another embodiment of the utility model or any of the foregoing embodiments, when there are multiple springs, a connecting plate is further provided between the top plate and the top cup, and the connecting plate is fixedly connected to the top cup of each spring. For example, when there are two or four springs, each top cup is welded to the bottom of the connecting plate.

[0019] According to another embodiment of the utility model or any of the foregoing embodiments, the spring vibration damper has a cylindrical base cup made of metal or rubber. When the base cup is made of rubber, a positioning hole is provided in the center of the base plate, and a protrusion is provided on the bottom of the base cup to be inserted into the positioning hole. Because the spring frequently expands and contracts during equipment use, a rubber base cup provides better vibration isolation and noise reduction. The protrusion inserted into the positioning hole positions the base cup to prevent it from shifting during use.

[0020] According to another embodiment of the utility model or any of the foregoing embodiments, the spring vibration damper includes a top plate with screw holes and a connecting plate with positioning holes. When the adjusting bolt rotates, it pushes the connecting plate to move vertically. The forward and reverse rotation of the adjusting bolt, combined with the bidirectional action of the spring, adjusts the distance between the top plate, the connecting plate, and the bottom plate, thereby leveling the equipment. After the distance between the top plate and the bottom plate is determined, the locking nut is screwed onto the upper surface of the top plate. Because the weight distribution of various parts of large equipment is uneven, the compression degree of the springs varies, making it difficult to adjust the equipment's level. The structure of this utility model allows for the adjustment of the equipment's level after the initial installation of the spring vibration damper.

[0021] According to another embodiment of the utility model or any of the foregoing embodiments, the spring vibration damper has rubber pads in contact or combined with the upper surface of the top plate and the lower surface of the bottom plate, and at least one rubber pad is connected to the outer side of the upper limit side plate and the inner side of the lower limit side plate above the transverse partition. The rubber pads provide damping and buffering effects, have a high vibration isolation effect, and reduce noise.

[0022] According to another embodiment of the utility model or any of the foregoing embodiments, the spring damper has two mounting holes on both sides along its length. The base plate can be locked to the mounting foundation by bolts.

[0023] The beneficial effects of this utility model are:

[0024] The improved earthquake-resistant spring vibration damper disclosed in this utility model has thickened the key upper limit side plate and lower limit side plate, which significantly improves the structural strength and the anti-deformation effect. The addition of a transverse diaphragm solves the problem of easy breakage of the structure that is traditionally bolted to the base plate, ensuring that the upper limit side plate cannot be detached from the lower limit side plate, making installation more convenient, reducing the processing difficulty, and greatly improving the reliability and service life. Attached Figure Description

[0025] Figure 1 A three-dimensional schematic diagram of an existing earthquake-resistant spring vibration damper;

[0026] Figure 2 This is a three-dimensional schematic diagram of the earthquake-resistant spring vibration damper described in this utility model;

[0027] Figure 3This is a side view of the earthquake-resistant spring vibration damper described in this utility model;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of part A;

[0029] Figure 5 This is a cross-sectional schematic diagram of the earthquake-resistant spring vibration damper described in this utility model;

[0030] Figure 6 This is an enlarged three-dimensional schematic diagram of the anti-detachment component described in this utility model;

[0031] In the diagram, 1. Top plate; 2. Upper limit side plate; 3. Lower limit side plate; 301. Horizontal partition; 4. Anti-detachment assembly; 401. Limit nut; 402. Limit pin; 403. Washer; 404. Double-ended bolt; 5. Base plate; 6. Bottom bowl; 7. Spring; 8. Top bowl; 9. Connecting plate; 10. Adjusting bolt; 11. Locking nut; 12. Rubber pad; 13. Mounting hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 2 As shown, the base plate 5 of the improved earthquake-resistant spring vibration damper is fixed on the installation foundation of the equipment. The top plate 1 is connected to the bottom of the equipment by adjusting bolts 10 and locking nuts 11. The spring 7 has its two ends in contact with the top cup 8 and the bottom cup 6 respectively and is partially covered by both. The bottom cup 6 is fixed to the upper surface of the base plate 5, and the top cup 8 is fixedly connected to the top plate 1.

[0034] like Figure 5 As shown, there are two sets of upper limit side plates 2 and lower limit side plates 3, symmetrically arranged on both sides of the shock absorber; the upper limit side plate 2 is fixedly connected to the top plate 1, and the structure is a box-shaped structure with an outer opening, which facilitates the installation and removal of the anti-detachment component 4; the lower limit side plate 3 is fixedly connected to the bottom plate 5, and the structure is a box-shaped structure with openings on the outer side and top. A horizontal partition 301 is provided in the middle of the lower limit side plate 3. The horizontal partition 301 is parallel to the bottom plate 5 and at a certain distance. The lower limit side plate 3 above the horizontal partition 301 covers the upper limit side plate 2 and restricts its horizontal movement range.

[0035] like Figure 1 , 3As shown, the thickness of each part of the upper limit side plate 2 and the lower limit side plate 3 is not less than 5mm. In existing spring 7 shock absorbers, the thickness of the upper limit side plate 2 and the lower limit side plate 3 is about 3.5mm. This utility model increases the thickness of the side plates, preferably to 10mm, which, combined with the structure, greatly improves the deformation resistance.

[0036] like Figure 4 , 5 As shown in Figure 6, the anti-detachment component 4 has two sets, passing through coaxial through holes on the bottom of the upper limit side plate 2 and the transverse partition 301, connecting the upper limit side plate 2 and the lower limit side plate 3, and preventing the upper limit side plate 2 from detaching from the lower limit side plate 3. The anti-detachment component 4 is not fixed to the upper limit side plate 2, the lower limit side plate 3, the top plate 1, or the bottom plate 5. The anti-detachment component 4 includes a double-ended bolt 404, a limiting nut 401, and a limiting pin 402. The double-ended bolt 404 passes through the through holes of the upper limit side plate 2 and the transverse partition 301. The threads of the double-ended bolt 404 and the limiting nut 401 are located in the chambers of the upper limit side plate 2 and the lower chamber of the lower limit side plate 3, respectively. Pin holes are provided at both ends of the double-ended bolt 404. After the limiting nut 401 is tightened, the limiting pin 402 is inserted into the pin holes. The limiting pin 402 can be a spring pin for easy removal and placement, while also providing good anti-detachment effect. The function of the limiting pin 402 is mainly to prevent the limiting nut 401 from coming off under strong vibration after long-term vibration, which would cause the upper limiting side plate 2 to come off the lower limiting side plate 3, resulting in horizontal displacement of the top plate 1 and the tipping of the spring damper. A washer 403 can be installed under the limiting nut 401 to distribute the force more evenly.

[0037] like Figure 2 As shown, rubber pads 12 are in contact or bonded to the upper surface of the top plate 1 and the lower surface of the bottom plate 5. At least one connection point between the outer side of the upper limit side plate 2 and the inner side of the lower limit side plate 3 above the transverse partition 301 is also made of rubber pads 12. The rubber pads 12 provide damping and buffering effects, resulting in high vibration isolation and reduced noise. Two mounting holes 13 are provided on both sides of the bottom plate 5 along its length. The bottom plate 5 can be secured to the mounting base using bolts.

[0038] Example 2:

[0039] like Figure 2 As shown, the other structures are the same as in Embodiment 1, except that Embodiment 1 has only one spring, while this embodiment has multiple springs 7. A connecting plate 9 is also provided between the top plate 1 and the top bowl 8, and the connecting plate 9 is fixedly connected to the top bowl 8 connected to each spring 7. For example, when there are two or four springs 7, each top bowl 8 is welded to the bottom of the connecting plate 9.

[0040] Example 3:

[0041] like Figure 5As shown, the other structures are the same as in Embodiment 2, except that the height of the spring damper in Embodiments 1 and 2 is not adjustable, while the height of the spring damper in this embodiment is adjustable, which can adjust the level of the equipment. Due to the uneven weight distribution of various parts of large equipment, the compression degree of spring 7 is different, making it difficult to adjust the level of the equipment. With the structure of this utility model, the level of the equipment can be adjusted after the spring damper is initially installed.

[0042] The top bowl 8 is separately installed from the top plate 1. The distance between the top bowl 8 and the top plate 1 is adjustable under the action of the adjusting bolt 10 and the spring 7. The top plate 1 is provided with screw holes, and the connecting plate 9 is provided with positioning holes. When the adjusting bolt 10 is rotated, it pushes the connecting plate 9 to move vertically. The forward and reverse rotation of the adjusting bolt 10, in conjunction with the bidirectional action of the spring 7, adjusts the distance between the top plate 1, the connecting plate 9, and the bottom plate 5, thereby adjusting the equipment horizontally. After the distance between the top plate 1 and the bottom plate 5 is determined, the locking nut 11 is screwed onto the upper surface of the top plate 1.

[0043] Example 4:

[0044] The other structures are the same as in embodiments one, two, and three, except that the base bowl 6 is made of rubber, whereas the base bowl 6 in the above embodiments is generally made of metal. A positioning hole is provided in the center of the base plate 5, and a protrusion on the bottom of the base bowl 6 is inserted into the positioning hole. Because the spring 7 frequently expands and contracts during equipment use, the rubber base bowl 6 provides better vibration isolation and noise reduction. The protrusion inserted into the positioning hole positions the base bowl 6 to prevent it from shifting during use.

[0045] The working principle of this utility model:

[0046] The installation process of this utility model is as follows: Rubber pads 12 are installed at key contact points of the top plate 1, bottom plate 5, upper limit side plate 2, and lower limit side plate 3 for vibration isolation and noise reduction. The bottom cup 6 is fixed to the upper surface of the bottom plate 5, and the protrusion is inserted into the positioning hole of the bottom plate 5 to prevent movement during use. The spring 7 is placed in the bottom cup 6, and then the top cup 8 is installed. The top cup 8 is fixedly connected to the top plate 1 or the connecting plate 9 (if there are multiple springs 7, a connecting plate 9 is provided). The top plate 1 is fastened to the lower structure. The upper limit side plate 2 and the lower limit side plate 3 are arranged symmetrically in two sets. The upper limit side plate 2 is fitted into the opening of the lower limit side plate 3 to limit the horizontal movement of the top plate 1. The double-ended bolt 404 passes through the through holes of the upper limit side plate 2 and the lower limit side plate 3, and is fastened inside and outside with the limit nut 401, and locked by the limit pin 402 to prevent the nut from loosening. At this time, the spring vibration damper is assembled. When installing the equipment, the equipment is lifted, and the base plate 5 is bolted to the equipment's mounting base to ensure overall stability. The top plate 1 is connected to the bottom of the equipment. By adjusting the depth of the adjusting bolt 10 into the top plate 1, the connecting plate 9 is moved vertically. With the compression of the spring 7, the height of the top plate 1 is adjusted, thereby adjusting the level of the equipment. After the level is adjusted, the locking nut 11 is screwed down into place.

[0047] This utility model mainly solves three problems in the background technology. The bending deformation of the side limiting plate is mainly solved by thickening the side plate, from 3.5mm to 10mm, and the strength of the upper limiting side plate 2 and the lower limiting side plate 3 is increased several times.

[0048] The limit nut 401 loosens during strong earthquakes, which is mainly resolved by using a spring pin.

[0049] Most importantly, the traditional spring shock absorber structure is as shown in the instruction manual. Figure 1 As shown, the bottom of the single-headed bolt is welded to the base plate 5. The vibration during equipment operation is insufficient to cause the weld to break. However, during strong vibrations, the top plate 1 shakes up and down, and the single-headed bolt falls off during the experiment, causing the top plate 1 to detach from the spring damper, resulting in the failure of the spring damper. To avoid the welding problem, this utility model uses a non-welded anti-detachment component 4, which cleverly sets up a transverse partition 301. The double-headed bolt 404 and the limiting nut 401 restrict the bottom of the transverse partition 301 and the upper limit side plate 2. Compared with the welding method, the strength is greatly improved, preventing the top plate 1 from horizontally displacing or detaching under the action of the spring 7.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and characteristics of this utility model, and are intended to enable those skilled in the art to understand and implement the content of this utility model. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An improved earthquake-resistant spring vibration damper, comprising: The base plate (5) is fixed on the equipment mounting foundation. The top plate (1) is connected to the bottom of the equipment via adjusting bolts (10) and locking nuts (11). At least one spring (7) is present, with its two ends in contact with the top bowl (8) and the bottom bowl (6) respectively, and partially covered by both. The bottom bowl (6) is fixed to the upper surface of the base plate (5), and the top bowl (8) is fixedly connected to the top plate (1); or the top bowl (8) is set separately from the top plate (1), and the distance between the top bowl (8) and the top plate (1) is adjustable under the action of the adjusting bolt (10) and the spring (7). The features are as follows: there are two sets of upper limit side plates (2) and lower limit side plates (3), which are symmetrically arranged on both sides of the shock absorber; the upper limit side plate (2) is fixedly connected to the top plate (1), and the structure is a box-shaped structure with an outer opening, which facilitates the installation and removal of the anti-detachment component; the lower limit side plate (3) is fixedly connected to the bottom plate (5), and the structure is a box-shaped structure with openings on the outer side and top; a horizontal partition (301) is provided in the middle of the lower limit side plate (3), the horizontal partition (301) is parallel to the bottom plate (5) and has a certain distance, and the lower limit side plate (3) above the horizontal partition (301) covers the upper limit side plate (2) and restricts its horizontal movement range. The anti-detachment component (4) has two sets, which pass through the coaxial through holes at the bottom of the upper limit side plate (2) and the transverse partition (301), and connect the upper limit side plate (2) and the lower limit side plate (3), preventing the upper limit side plate (2) from detaching from the lower limit side plate (3). The anti-detachment component (4) is not fixed on the upper limit side plate (2), the lower limit side plate (3), the top plate (1), or the bottom plate (5).

2. The improved earthquake-resistant spring vibration damper according to claim 1, characterized in that: The thickness of each part of the upper limit side plate (2) and the lower limit side plate (3) shall not be less than 5mm.

3. An improved earthquake-resistant spring vibration damper according to claim 1 or 2, characterized in that: The anti-detachment component includes a double-ended bolt (404), a limiting nut (401), and a limiting pin (402). The double-ended bolt (404) passes through the through holes of the upper limit side plate (2) and the transverse partition (301). The threads of the double-ended bolt (404) and the limiting nut (401) are located in the chamber of the upper limit side plate (2) and the lower chamber of the lower limit side plate (3), respectively. The double-ended bolt (404) has pin holes at both ends. After the limiting nut (401) is locked, the limiting pin (402) is inserted into the pin hole.

4. An improved earthquake-resistant spring vibration damper according to claim 1 or 2, characterized in that: When there are multiple springs (7), a connecting plate (9) is also provided between the top plate (1) and the top bowl (8), and the connecting plate (9) is fixedly connected to the top bowl (8) connected to each spring (7).

5. An improved earthquake-resistant spring vibration damper according to claim 4, characterized in that: The top plate (1) is provided with screw holes, and the connecting plate (9) is provided with positioning holes. When the adjusting bolt (10) rotates, it pushes the connecting plate (9) to move vertically. The forward and reverse rotation of the adjusting bolt (10) in conjunction with the bidirectional action of the spring (7) adjusts the distance between the top plate (1), the connecting plate (9), and the bottom plate (5), thereby adjusting the equipment horizontally. After the distance between the top plate (1) and the bottom plate (5) is determined, the locking nut (11) is screwed onto the upper surface of the top plate (1).

6. An improved earthquake-resistant spring vibration damper according to claim 1, characterized in that: The bottom bowl (6) is cylindrical and made of metal or rubber. When the bottom bowl (6) is made of rubber, a positioning hole is provided in the center of the bottom plate (5), and a protrusion is provided at the bottom of the bottom bowl (6) to be inserted into the positioning hole.

7. An improved earthquake-resistant spring vibration damper according to claim 1 or 2, characterized in that: The upper surface of the top plate (1) and the lower surface of the bottom plate (5) are in contact with or combined with rubber pads (12), and the outer side of the upper limit side plate (2) and the inner side of the lower limit side plate (3) above the transverse partition (301) are connected to at least one rubber pad (12).

8. An improved earthquake-resistant spring vibration damper according to claim 1 or 2, characterized in that: The base plate (5) has two mounting holes (13) on both sides along its length.

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