Space-limited oblique cone spring damping device and manufacturing method

Abstract

The invention belongs to the technical field of damping devices, and particularly relates to a space-limited oblique cone spring damping device and a manufacturing method. According to the technical scheme, the space-limited oblique cone spring damping device comprises an upper mounting plate connected to the bottom of a product and a lower mounting plate connected to a base, and a plurality of oblique cone springs and a plurality of oblique dampers are connected between the upper mounting plate and the lower mounting plate; in the direction from top to bottom, the diameter of the oblique cone spring is gradually increased, the center of the oblique cone spring is gradually away from the center line of the upper mounting plate, and the upper section and the lower section of the oblique damper incline in the direction away from the center line of the upper mounting plate. The invention provides a space-limited oblique cone spring damping device and a manufacturing method.

Description

Technical Field

[0001] The present invention belongs to the technical field of shock absorption devices, and particularly relates to an inclined cone spring shock absorption device with limited space and a manufacturing method thereof. Background Art

[0002] Common types of shock absorption devices include hydraulic shock absorption devices, gas shock absorption devices, metal spring shock absorption devices, electromagnetic shock absorption devices, electric shock absorption devices, magnetorheological shock absorption devices, etc.

[0003] Among them, the metal spring shock absorption device uses the energy absorption of the metal spring during compression or stretching to suppress vibration. It has the advantages of small occupied space, convenient installation, low cost, low noise, easy maintenance, and good high-frequency vibration isolation effect. However, it also has the disadvantages of relatively low shock absorption efficiency, relatively large self-weight, and poor low-frequency vibration isolation effect.

[0004] Traditional metal spring shock absorption devices adopt the method of straight springs plus dampers. The straight springs absorb energy through compression or stretching, and the dampers convert the energy into heat during the compression or stretching movement of the springs and dissipate it into the air, thereby achieving the effect of suppressing vibration.

[0005] The elastic coefficient of the spring depends on the following factors:

[0006] 1) Spring material:

[0007] a) Rigidity modulus. The larger the rigidity modulus, the higher the elastic coefficient of the spring.

[0008] 2) Spring size:

[0009] a) Wire diameter. The larger the wire diameter, the larger the cross-sectional area of the material, and the higher the elastic coefficient.

[0010] b) Number of active coils. The more the number of active coils, the lower the elastic coefficient.

[0011] c) Mean diameter of the spring. The larger the mean diameter of the spring, the lower the elastic coefficient.

[0012] d) Pitch. The larger the pitch, the lower the elastic coefficient.

[0013] 3) Other factors: such as temperature, etc. The elastic coefficient may decrease at high temperatures.

[0014] The higher the elastic coefficient, the "harder" the spring is and the more resistant it is to deformation under external forces.

[0015] The straight spring has many defects: 1) When the product is tilted by vibration, its anti-deflection ability is weak; 2) When the space is limited, for example, there is an obstruction below the product or no supporting plane, it cannot be installed. Summary of the Invention

[0016] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide an inclined conical spring shock absorber device with limited space and a manufacturing method thereof.

[0017] The technical solution adopted by the present invention is as follows:

[0018] An inclined conical spring shock absorber device with limited space includes an upper mounting plate connected to the bottom of the product and a lower mounting plate connected to the base. A plurality of inclined conical springs and a plurality of inclined dampers are connected between the upper mounting plate and the lower mounting plate; in the direction from top to bottom, the diameter of the inclined conical spring gradually increases, the center of the inclined conical spring gradually moves away from the center line of the upper mounting plate, and both the upper and lower sections of the inclined damper incline in the direction away from the center line of the upper mounting plate.

[0019] The inclined conical springs and inclined dampers are connected between the upper mounting plate and the lower mounting plate of the present invention, so that reliable buffering and shock absorption can be obtained between the product to be shock-absorbed and the base. Since the lower section of the inclined conical spring has a larger diameter than the upper section (the product support part), when the product is tilted due to vibration, the anti-deflection ability can be effectively improved.

[0020] In the direction from top to bottom, the diameter of the inclined conical spring gradually increases, the center of the inclined conical spring gradually moves away from the center line of the upper mounting plate, and both the upper and lower sections of the inclined damper incline in the direction away from the center line of the upper mounting plate, so that the inclined conical spring and the inclined damper do not block the space below the product. When the space is limited, such as there is an obstruction or no supporting plane below the product, the inclined conical spring and the inclined damper can avoid the obstruction or be suspended and be based on a new supporting plane.

[0021] The device of the present invention has a simple structure, low cost, and is convenient for processing and manufacturing. It can effectively improve the anti-deflection ability of the shock absorber device and realize the installation and support under the condition of limited space.

[0022] As a preferred solution of the present invention, a plurality of mounting bosses are provided on the upper side of the upper mounting plate and the lower side of the lower mounting plate. The mounting bosses of the upper mounting plate are connected to the product by bolts, and the mounting bosses of the lower mounting plate are connected to the base by bolts.

[0023] The upper mounting plate is used to mount the product and is provided with a plurality of mounting bosses. The mounting surfaces of the mounting bosses adopt a unified reference during processing and are coplanar with each other. A plurality of threaded holes are opened on the mounting bosses for fixing the product (the mounting form is that the bolt passes through the through hole of the product and then is screwed into the threaded hole of the mounting boss). According to different mounting forms, the plurality of threaded holes can also be changed to a plurality of through holes (at this time, the bolt passes through the through hole and then is screwed into the threaded hole of the product). The shape of the upper mounting plate is designed with reference to the shape of the product. For example, if the product is cylindrical, the number of mounting bosses is an integer greater than 3; if the product is square, the upper mounting plate is also designed as square.

[0024] The lower mounting plate is used to fix the shock absorber on the base, and is provided with a number of mounting bosses. When machining the mounting surfaces of the mounting bosses, a unified reference is adopted, and they are coplanar with each other. The number of mounting bosses is the same as that of the upper mounting plate. A number of threaded holes are provided on the mounting bosses (the mounting form is that the bolt passes through the through hole of the base and then is screwed into the threaded hole of the mounting boss). According to different mounting forms, the number of threaded holes can also be changed to a number of through holes (in this case, the bolt passes through the through hole and then is screwed into the threaded hole of the base). The shape of the lower mounting plate is designed with reference to the shape of the base. For example, if the mounting surface of the base is annular, the number of mounting bosses is an integer greater than 3 at this time; if the base is square, the lower mounting plate is also designed as a square.

[0025] As a preferred solution of the present invention, a stepped hole is provided on the mounting boss. The stepped hole of the upper mounting plate is connected to the top of the inclined damper by a bolt, and the stepped hole of the lower mounting plate is connected to the bottom of the inclined damper by a bolt.

[0026] Stepped holes are provided on a number of mounting bosses of the upper mounting plate and the lower mounting plate. A threaded hole is provided at the top of the inclined damper. The bolt passes through the stepped hole of the upper mounting plate and is screwed into the threaded hole at the top of the inclined damper to complete the fixation of the inclined damper and the upper mounting plate.

[0027] A threaded hole is provided at the bottom of the inclined damper. The bolt passes through the stepped hole of the lower mounting plate and is screwed into the threaded hole at the bottom of the inclined damper to complete the fixation of the inclined damper and the lower mounting plate.

[0028] As a preferred solution of the present invention, the inclined damper includes a cylinder body. The bottom of the cylinder body is connected to the lower mounting plate, a cover is connected to the top of the cylinder body, a viscous liquid or gas is provided in the cylinder body, a piston is sleeved in the cylinder body, the piston is connected with a moving rod, the moving rod passes through the cover, and the top of the moving rod is connected to the upper mounting plate.

[0029] The overall shape of the inclined damper is approximately "Z" shaped, and includes a moving rod, a cylinder body, a cover, a sealing sleeve, a sealing ring, a piston, and a viscous liquid or gas. The inclined damper is installed in the inclined cone spring, and the upper and lower ends of the inclined damper are respectively fixed to the upper mounting plate and the lower mounting plate.

[0030] As a preferred solution of the present invention, the middle part of the cover is machined with an external thread, the upper part of the cylinder body is provided with an external thread, the external thread of the cover is matched with the internal thread of the cylinder body, and fine teeth are provided on the circumferential surface of the end of the cover extending out of the cylinder body.

[0031] A circular hole is provided in the center of the cover, and a number of fine teeth are provided along the circumferential direction on the upper part, which is convenient for increasing the friction force when screwing into the cylinder body by hand. In actual processing, wire cutting or lathe rolling can be used instead. The middle part of the cover is machined with an external thread, and the limit of the external thread is a thread relief groove. The external thread of the cover can be matched with the internal thread of the cylinder body to fix the two into one body. Usually, anaerobic thread glue or epoxy glue is applied at the thread to prevent loosening.

[0032] As a preferred embodiment of the present invention, a semi-circular annular groove is provided at the lower part of the cover, and a sealing ring is provided between the semi-circular annular groove and the inner wall of the cylinder block. The sealing ring is integrally annular and has a circular cross-section. The sealing ring is stuck in the semi-circular annular groove of the cover, and the outer side is extruded on the inner cavity wall of the cylinder block, playing a sealing role to prevent the leakage of viscous liquid or gas in the cylinder block.

[0033] As a preferred embodiment of the present invention, the moving rod includes a moving inclined section. The top of the moving inclined section is connected to the upper mounting plate. A telescopic section is provided at the lower part of the moving inclined section. The bottom of the telescopic section is threadedly connected to the piston. The telescopic section passes through the cover, and a sealing sleeve for sealing the gap between the telescopic section and the cover is sleeved on the telescopic section. The sealing sleeve is a hollow cylinder, sleeved on the telescopic section, and is in a tight fit with the telescopic section. The sealing sleeve is sleeved in the circular hole at the center of the cover and is in a tight fit with the cover. The sealing sleeve slides in the circular hole of the cover together with the moving rod, playing a sealing role to prevent the leakage of viscous liquid or gas in the cylinder block.

[0034] As a preferred embodiment of the present invention, the piston includes a metal block. The metal block is connected to the lower end of the moving rod. A rubber ring is connected to the periphery of the metal block, and the rubber ring is loosely fitted with the inner wall of the cylinder block. The inner side of the piston is made of metal and has a threaded hole, which matches the external thread at the end of the moving rod and is fixed to the moving rod as a whole. It slides up and down in the cylinder block together with the moving rod. Usually, anaerobic thread glue or epoxy glue is applied at the thread to prevent loosening. The outer side of the piston is made of rubber and is loosely fitted with the inner cavity wall of the cylinder block. When sliding up and down, it can squeeze or expand the viscous liquid or gas in the cylinder block, generating a viscous force opposite to the movement direction of the piston. When the external vibration makes the piston reciprocate in the viscous liquid or gas, the viscous force can convert kinetic energy into heat energy and dissipate it in the air. The processing method of the piston is to press the melted rubber liquid and the metal part into one body through a mold, and after forming, the metal part is embedded inside the rubber.

[0035] As a preferred embodiment of the present invention, the cylinder block includes a connecting inclined section. The lower end of the connecting inclined section is connected to the lower mounting plate. A cylinder barrel is provided on the upper side of the connecting inclined section. The piston is sleeved in the cylinder barrel, and the viscous liquid or gas is arranged in the cylinder barrel. The cover is connected to the top of the cylinder barrel.

[0036] A manufacturing method of a space-limited inclined cone spring shock absorber includes the following steps:

[0037] Processing method of the inclined cone spring:

[0038] Clamp the inclined cone mandrel with a lathe and use a center to support the other end;

[0039] The lathe drives the mandrel to rotate slowly. Manually wind the steel wire in the annular groove of the mandrel and tighten it by hand. After winding, cut it with a turning tool;

[0040] Heat treatment is carried out together with the mandrel to stabilize the elasticity;

[0041] Rotate the tapered spring along the mandrel and slowly screw it out 1 - 2 turns from the small end direction of the mandrel, then the tapered spring can be taken out from the annular groove of the mandrel.

[0042] The beneficial effects of the present invention are as follows:

[0043] 1. The tapered spring and the inclined damper are connected between the upper mounting plate and the lower mounting plate of the present invention, so that reliable buffering and shock absorption can be obtained between the product to be shock-absorbed and the base. Since the lower section of the tapered spring has a larger diameter than the upper section (the product support part), when the product is tilted due to vibration, the anti-deflection ability can be effectively improved.

[0044] 2. In the up-down direction, the diameter of the tapered spring gradually increases, the center of the tapered spring gradually moves away from the center line of the upper mounting plate, and both the upper and lower sections of the inclined damper incline away from the center line of the upper mounting plate. Thus, the tapered spring and the inclined damper do not block the space below the product. When the space is limited, for example, there is an obstruction or no supporting plane below the product, the tapered spring and the inclined damper can avoid the obstruction or be suspended and be based on a new supporting plane.

[0045] 3. The device of the present invention has a simple structure, low cost, and is convenient for processing and manufacturing. It can effectively improve the anti-deflection ability of the shock-absorbing device and realize the installation and support under limited space conditions. Brief Description of the Drawings

[0046] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0047] Figure 2 is a three-dimensional structural schematic diagram of the upper mounting plate;

[0048] Figure 3 is a three-dimensional structural schematic diagram of the lower mounting plate after being turned over up and down;

[0049] Figure 4 is a three-dimensional structural schematic diagram of the tapered spring;

[0050] Figure 5 is a three-dimensional structural schematic diagram of the inclined damper;

[0051] Figure 6 is a three-dimensional structural schematic diagram of the half-section of the inclined damper;

[0052] Figure 7 is a three-dimensional structural schematic diagram of the moving rod;

[0053] Figure 8 is a three-dimensional structural schematic diagram of the cylinder block;

[0054] Figure 9 is a three-dimensional structural schematic diagram of the half-section of the cylinder block;

[0055] Figure 10 is a three-dimensional structural schematic diagram of the cover;

[0056] Figure 11 is a three-dimensional structural schematic diagram of the sealing ring;

[0057] Figure 12 is a three-dimensional structural schematic diagram of the sealing sleeve;

[0058] Figure 13 is a three-dimensional structural schematic diagram of the piston;

[0059] Figure 14 is a three-dimensional structural schematic diagram of the half-sectioned piston;

[0060] Figure 15 is a three-dimensional structural schematic diagram of the mandrel for winding the conical spring.

[0061] In the figure: 1 - upper mounting plate; 2 - lower mounting plate; 3 - conical spring; 4 - inclined damper; 41 - moving rod; 42 - cylinder block; 43 - cover; 44 - sealing ring; 45 - sealing sleeve; 46 - piston. Detailed implementation manners

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0063] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0064] As Figures 1 to 15 shown, the space-constrained conical spring shock absorption device of this embodiment includes an upper mounting plate 1 connected to the bottom of the product and a lower mounting plate 2 connected to the base. A plurality of conical springs 3 and a plurality of inclined dampers 4 are connected between the upper mounting plate 1 and the lower mounting plate 2; in the direction from top to bottom, the diameter of the conical spring 3 gradually increases, the center of the conical spring 3 gradually moves away from the center line of the upper mounting plate 1, and both the upper and lower sections of the inclined damper 4 incline in the direction away from the center line of the upper mounting plate 1.

[0065] Specifically, the inclined damper 4 includes a cylinder block 42. The bottom of the cylinder block 42 is connected to the lower mounting plate 2, and a cover 43 is connected to the top of the cylinder block 42. The cylinder block 42 is provided with viscous liquid or gas, and a piston 46 is sleeved inside the cylinder block 42. The piston 46 is connected to a moving rod 41, and the moving rod 41 passes through the cover 43. The top of the moving rod 41 is connected to the upper mounting plate 1. The overall shape of the inclined damper 4 is approximately "Z" - shaped. The inclined damper 4 is installed inside the inclined conical spring 3, and the upper and lower ends of the inclined damper 4 are respectively fixed to the upper mounting plate 1 and the lower mounting plate 2.

[0066] The upper mounting plate 1 is used to mount the product and is provided with a number of mounting bosses. The mounting surfaces of each mounting boss are processed with a unified datum and are coplanar with each other. A number of threaded holes are opened on the mounting bosses for fixing the product (the mounting form is that the bolt passes through the through - hole of the product and then is screwed into the threaded hole of the mounting boss). According to different mounting forms, the number of threaded holes can also be changed to a number of through - holes (in this case, the bolt passes through the through - hole and then is screwed into the threaded hole of the product). The shape of the upper mounting plate 1 is designed with reference to the shape of the product. For example, if the product is cylindrical, an Figure 2 annular shape as shown can be adopted, and at this time, the number of mounting bosses is an integer greater than 3; if the product is square, the upper mounting plate 1 is also designed as square.

[0067] The lower mounting plate 2 is used to fix this shock - absorbing device on the base and is provided with a number of mounting bosses. The mounting surfaces of each mounting boss are processed with a unified datum and are coplanar with each other. The number of mounting bosses is the same as that of the upper mounting plate 1. A number of threaded holes are opened on the mounting bosses (the mounting form is that the bolt passes through the through - hole of the base and then is screwed into the threaded hole of the mounting boss). According to different mounting forms, the number of threaded holes can also be changed to a number of through - holes (in this case, the bolt passes through the through - hole and then is screwed into the threaded hole of the base). The shape of the lower mounting plate 2 is designed with reference to the shape of the base. For example, if the mounting surface of the base is annular, an Figure 3 annular shape as shown can be adopted, and at this time, the number of mounting bosses is an integer greater than 3; if the base is square, the lower mounting plate 2 is also designed as square.

[0068] Step - holes are opened on a number of mounting bosses of the upper mounting plate 1 and the lower mounting plate 2.

[0069] The inclined conical spring 3 is an inclined conical spring, and the number is several, which is the same as the number of mounting bosses of the upper mounting plate 1 and the lower mounting plate 2. To ensure uniform and effective support, it is usually more than 3 pieces.

[0070] A threaded hole is opened in the upper part of the moving rod 41. The bolt passes through the step - hole of the upper mounting plate 1 and is screwed into the threaded hole of the moving rod 41 to complete the fixation of the moving rod 41 and the upper mounting plate 1. The lower part of the moving rod 41 is in the shape of a slender rod, and the end is processed with external threads.

[0071] The lower part of the cylinder block 42 is provided with threaded holes. Bolts pass through the stepped holes of the lower mounting plate 2 and are screwed into the threaded holes of the cylinder block 42 to complete the fixation of the cylinder block 42 and the lower mounting plate 2. The upper part of the cylinder block 42 is a cylindrical inner cavity with a smooth surface and a roughness below Ra1.6. An internal thread is machined at the uppermost side of the inner cavity of the cylinder block 42, and the limit of the internal thread is a thread relief groove.

[0072] A circular hole is provided at the center of the cover 43, and a number of fine teeth are provided along the circumferential direction at the upper part, which is convenient for increasing the friction force when screwing the cover 43 into the cylinder block 42 by hand. In actual processing, wire cutting or lathe rolling can be used instead. An external thread is machined in the middle of the cover 43, and the limit of the external thread is a thread relief groove. The external thread of the cover 43 can be matched with the internal thread of the cylinder block 42 to fix the two into one body. Usually, anaerobic thread glue or epoxy glue is applied at the thread to prevent loosening. The lower part of the cover 43 is a semi-circular annular groove.

[0073] The sealing sleeve 45 is a hollow cylinder; the inner side of the sealing sleeve 45 can pass through the lower part of the moving rod 41, which is a tight fit; the outer side passes through the circular hole at the center of the cover 43, which is a tight fit. The sealing strip is fixed on the moving rod 41 and slides in the circular hole of the cover 43 together with the moving rod 41, playing a sealing role to prevent the leakage of viscous liquid or gas in the cylinder block 42.

[0074] The sealing ring 44 is integrally annular and has a circular cross-section. The sealing ring 44 is stuck in the semi-circular annular groove of the cover 43, and the outer side is pressed against the inner cavity wall of the cylinder block 42, playing a sealing role to prevent the leakage of viscous liquid or gas in the cylinder block 42.

[0075] The inner side of the piston 46 is made of metal and is provided with threaded holes, which are matched with the external threads at the end of the moving rod 41 and fixed to the moving rod 41 as one body. It slides up and down in the cylinder block 42 together with the moving rod 41. Usually, anaerobic thread glue or epoxy glue is applied at the thread to prevent loosening. The outer side of the piston 46 is made of rubber and has a loose fit with the inner cavity wall of the cylinder block 42. When sliding up and down, it can squeeze or expand the viscous liquid or gas in the cylinder block 42 to generate a viscous force opposite to the moving direction of the piston 46. External vibration makes the piston 46 reciprocate in the viscous liquid or gas, and the viscous force can convert kinetic energy into heat energy and dissipate it in the air. The processing method of the piston 46 is to press the melted rubber liquid and the metal part into one body through a mold, and after forming, the metal part is embedded inside the rubber.

[0076] The relative movement direction of the piston 46 and the cylinder block 42 is basically the same as the direction of gravity. However, since the outer side of the piston 46 is made of rubber and has a certain elasticity, the axis of the piston 46 and the cylinder block 42 can be deflected by a small angle to avoid rigid extrusion caused by torsional force during vibration and damage the damper. The torsional force generated during vibration can be balanced by the conical spring 3.

[0077] The processing method of the conical spring 3:

[0078] Conventional spring processing usually uses a spring machine to automatically wind around a rod-shaped mandrel. The spring pitch depends on the rotational speed and the feed speed, and is a fixed value.

[0079] Although the pitch of the tapered spring 3 is a fixed value, the rotational speed and the feed speed are no longer in a fixed ratio and need to be constantly changed. At the same time, a tapered mandrel needs to be used. There is no spring machine on the market for processing the tapered spring 3, and the following method can be used for processing.

[0080] Clamp the tapered mandrel with a lathe and use a center to support the other end. The lathe drives the mandrel to rotate slowly. Manually wind the steel wire into the annular groove of the mandrel and tighten it by hand. After winding, cut it off with a turning tool. To ensure the stability of the shape, heat treatment can be carried out together with the mandrel to stabilize the elasticity. After the heat treatment is completed, rotate the tapered spring 3 along the mandrel and slowly screw out 1-2 turns from the small end direction of the mandrel, and then the tapered spring 3 can be taken out from the annular groove of the mandrel.

[0081] The present invention is applicable to the situation where there is a suspension or interference below the product installation position. Through the tapered spring 3 and the inclined damper 4 of the present invention, the suspension or interference position can be avoided. When vibration occurs, the tapered spring 3 is continuously stretched or compressed to achieve the purpose of reducing vibration. The inclined damper 4 moves up and down with the tapered spring 3, and converts kinetic energy into heat energy and dissipates it in the air. The torsional force generated during vibration can also be balanced by the tapered spring 3.

[0082] The present invention is not limited to the above optional embodiments. Anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present invention, they are all within the protection scope of the present invention.

Claims

1. A space - limited inclined - cone spring shock - absorbing device, characterized in that: It includes an upper mounting plate (1) connected to the bottom of the product and a lower mounting plate (2) connected to the base. A number of conical springs (3) and a number of oblique dampers (4) are connected between the upper mounting plate (1) and the lower mounting plate (2); in the direction from top to bottom, the diameter of the conical spring (3) gradually increases, the center of the conical spring (3) gradually moves away from the center line of the upper mounting plate (1), and both the upper and lower sections of the oblique damper (4) incline in the direction away from the center line of the upper mounting plate (1).

2. The space-limited inclined conical spring shock-absorbing device according to claim 1, characterized in that: A number of mounting bosses are provided on the upper side of the upper mounting plate (1) and the lower side of the lower mounting plate (2). The mounting bosses of the upper mounting plate (1) are connected to the product by bolts, and the mounting bosses of the lower mounting plate (2) are connected to the base by bolts.

3. The space-limited inclined cone spring shock absorption device according to claim 2, characterized in that: Step holes are provided on the mounting bosses. The step holes of the upper mounting plate (1) are connected to the top of the oblique damper (4) by bolts, and the step holes of the lower mounting plate (2) are connected to the bottom of the oblique damper (4) by bolts.

4. A space-constrained inclined conical spring shock absorber according to claim 1, characterized in that: The oblique damper (4) includes a cylinder block (42). The bottom of the cylinder block (42) is connected to the lower mounting plate (2). A cover (43) is connected to the top of the cylinder block (42). A viscous liquid or gas is provided inside the cylinder block (42). A piston (46) is sleeved inside the cylinder block (42). The piston (46) is connected with a moving rod (41). The moving rod (41) passes through the cover (43), and the top of the moving rod (41) is connected to the upper mounting plate (1).

5. The space-limited inclined conical spring shock-absorbing device according to claim 4, characterized in that: External threads are machined in the middle of the cover (43). External threads are provided on the upper part of the cylinder block (42). The external threads of the cover (43) are matched with the internal threads of the cylinder block (42). Fine teeth are provided on the circumferential surface of the end of the cover (43) extending out of the cylinder block (42).

6. The space - limited inclined cone spring shock - absorbing device according to claim 4, characterized in that: A semi-circular annular groove is provided at the lower part of the cover (43). A sealing ring (44) is provided between the semi-circular annular groove and the inner wall of the cylinder block (42).

7. A space - limited inclined cone spring shock - absorbing device according to claim 4, characterized in that: The moving rod (41) includes a moving inclined section. The top of the moving inclined section is connected to the upper mounting plate (1). A telescopic section is provided at the lower part of the moving inclined section. The bottom of the telescopic section is threadedly connected to the piston (46). The telescopic section passes through the cover (43). A sealing sleeve (45) for sealing the gap between the telescopic section and the cover (43) is sleeved on the telescopic section.

8. A space-constrained conical spring shock absorber device according to claim 4, characterized in that: The piston (46) includes a metal block. The metal block is connected to the lower end of the moving rod (41). A rubber ring is connected to the periphery of the metal block. The rubber ring is loosely fitted with the inner wall of the cylinder block (42).

9. The space - limited conical spring shock - absorbing device according to claim 4, wherein: The cylinder block (42) includes a connecting inclined section. The lower end of the connecting inclined section is connected to the lower mounting plate (2). A cylinder barrel is provided on the upper side of the connecting inclined section. The piston (46) is sleeved inside the cylinder barrel. The viscous liquid or gas is provided inside the cylinder barrel. The cover (43) is connected to the top of the cylinder barrel.

10. A manufacturing method of a space-constrained conical spring shock-absorbing device for manufacturing the space-constrained conical spring shock-absorbing device described in claim 1, characterized in that: It includes the following steps: Processing method of the conical spring (3): Clamp the conical mandrel with a lathe and use a center to support the other end; The lathe drives the mandrel to rotate slowly. Manually wind the steel wire in the annular groove of the mandrel and tighten it by hand. After winding, cut it with a turning tool; Carry out heat treatment together with the mandrel to stabilize the elasticity; Rotate the tapered coil spring (3) along the mandrel and slowly unwind it by 1 to 2 turns from the small end direction of the mandrel, then the tapered coil spring (3) can be removed from the annular groove of the mandrel.

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