External friction damper

Abstract

The utility model provides an external friction damper, and relates to the technical field of friction dampers. Which comprises a damping cylinder, a damping shaft, a damping assembly and an adjusting assembly, and is characterized in that the damping shaft penetrates through the damping cylinder, the damping assembly is arranged in the damping cylinder, the adjusting assembly is arranged in the damping cylinder and connected with the damping assembly, and the adjusting assembly is used for adjusting damping generated by the damping assembly to the damping shaft; the damping shaft is provided with a telescopic assembly and a connecting piece, the telescopic assembly is installed at one end of the damping shaft, the connecting piece is detachably installed at the end, away from the damping shaft, of the telescopic assembly, and the telescopic assembly is used for adjusting the length of the damping shaft. By adopting the friction damper, the length of the friction damper can be adjusted on the basis that the damping force of the friction damper can be adjusted, so that the friction damper is suitable for more working conditions.

Description

Technical Field

[0001] The present application relates to the technical field of friction dampers, and in particular to an external friction damper. Background Art

[0002] A friction damper is a device that uses the friction energy of the friction surface to dissipate vibration energy. It converts friction into heat energy through the mutual friction between the polymer composite friction material and the friction steel plate, thereby dissipating the energy caused by earthquakes or other external forces. This type of damper is a displacement-related energy dissipation and shock absorption device with the characteristics of simple structure, easy installation, good energy dissipation, and performance that is not affected by temperature.

[0003] In general, external friction damper is an effective vibration energy dissipation device, and its wide range of application fields proves its value and importance in engineering practice.

[0004] The utility model patent with the authorization announcement number CN220227650U disclosed in the Chinese patent literature discloses an "adjustable friction damper" and specifically discloses an adjustment component, wherein the adjustment component includes a fixed cylinder, a cover plate, a damping shaft, an upper end plate, a lower end plate, a friction block, a fixed plate, a vertical plate, a first screw, a nut plate and a turning handle; the upper surface of the fixed cylinder is welded with a cover plate. When the utility model is working, the friction between the friction block and the damping shaft absorbs energy, which can eliminate the vibration and impact of the upper end plate and the lower end plate. When the turning handle is turned clockwise, the nut plates are close to each other to squeeze the friction block, so that the pressure of the friction block on the damping shaft increases, and then the friction coefficient between the friction block and the damping shaft can be increased, so that the friction between the friction block and the damping shaft can be increased. Similarly, when the turning handle is turned counterclockwise, the nut plates are far away from each other, and the extrusion force on the friction block is reduced, which can reduce the friction between the friction block and the damping shaft. The damping force of the friction damper is adjusted by adjusting the friction between the friction block and the damping shaft.

[0005] However, in actual engineering use, the lengths of the friction dampers required under different working conditions are inconsistent. The prior art disclosed in the aforementioned patent cannot adjust the length of the friction damper well, and has a narrow scope of application.

[0006] The above information disclosed in the above Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to one of ordinary skill in the art. Utility Model Content

[0007] The main purpose of the present application is to provide an external friction damper. On the basis of being able to adjust the damping force of the friction damper, the length of the friction damper can also be adjusted to be suitable for more working conditions.

[0008] In order to solve the aforementioned technical problems, the present application provides an external friction damper, comprising a damping cylinder, a damping shaft, a damping assembly and an adjusting assembly, characterized in that: the damping shaft passes through the damping cylinder, the damping assembly is arranged in the damping cylinder, the adjusting assembly is arranged in the damping cylinder and connected to the damping assembly, and the adjusting assembly is used to adjust the damping generated by the damping assembly on the damping shaft;

[0009] The damping shaft is provided with a telescopic assembly and a connecting piece. The telescopic assembly is installed at one end of the damping shaft. The connecting piece is detachably installed at the end of the telescopic assembly away from the damping shaft. The telescopic assembly is used to adjust the length of the damping shaft.

[0010] Optionally, in some embodiments of the present invention, the damping assembly comprises two friction blocks symmetrically arranged along the damping axis, and the inner sides of the two friction blocks are in contact with the surface of the damping axis.

[0011] Optionally, in some embodiments of the present invention, a friction layer is detachably provided on the inner side of the friction block.

[0012] Optionally, in some embodiments of the present invention, the telescopic assembly and the connecting member are detachably connected via bolts.

[0013] Optionally, in some embodiments of the present utility model, the adjustment assembly includes a mounting frame, a first screw rod, two push plates and two nut plates;

[0014] Two guide rods are arranged at intervals on both sides of the damping cylinder in the mounting frame, and two push plates are arranged on both sides of the damping cylinder respectively and penetrated by the two guide rods;

[0015] Two nut plates are installed on one of the guide rods and are respectively located outside the two push plates. The first screw tube runs through the two nut plates, and the thread directions of the two nut plates are opposite.

[0016] Optionally, in some embodiments of the present invention, a push rod is provided on the inward side of the two push plates, and the two push rods penetrate the damping cylinder and are respectively connected to the damping assembly.

[0017] Optionally, in some embodiments of the utility model, the telescopic assembly includes a telescopic rod, a second screw and a locking assembly, the second screw is installed on the damping shaft, a screw hole for use with the second screw is provided in the telescopic rod, the telescopic rod is arranged at one end of the second screw away from the damping shaft, and the locking assembly is arranged on the telescopic rod for locking the telescopic rod with the second screw.

[0018] Optionally, in some embodiments of the present invention, the locking assembly includes a latch, an elastic member and a baffle.

[0019] The second screw rod is provided with a limiting groove, the telescopic rod is provided with a limiting hole, the latch is movably arranged in the limiting hole, the baffle is arranged on the latch, one end of the elastic member is connected to the baffle, and the other end of the elastic member is connected to the telescopic rod, and the elastic member is used to drive the latch to move into the limiting groove.

[0020] Optionally, in some embodiments of the present invention, both ends of the damping cylinder are provided with sealing sleeves used in conjunction with the damping shaft.

[0021] Optionally, in some embodiments of the present invention, a bottom plate is detachably provided at one end of the damping cylinder, and the damping shaft passes through the bottom plate.

[0022] The beneficial effects that can be achieved by this application.

[0023] An external friction damper proposed in an embodiment of the present application, through the aforementioned technical solution, cooperates with the damping shaft through the damping component. When the damping shaft reciprocates along the axial direction of the damping cylinder, the friction force between the damping component and the damping shaft is converted into heat energy, thereby dissipating the energy caused by other external forces.

[0024] By setting the adjustment component, the pressure between the damping component and the damping shaft can be further adjusted, thereby achieving the adjustment of the damping force of the friction damper.

[0025] When the friction damper is externally arranged, it will be applicable to more different working conditions. Therefore, by setting a telescopic component, the distance between the connecting piece and the damping cylinder can be adjusted to adapt to more working conditions. At the same time, the connecting piece and the telescopic component are detachably connected to install connecting pieces of different models, which is applicable to different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an external friction damper provided in an embodiment of the utility model;

[0027] Figure 2 A cross-sectional view of a damping assembly provided in an embodiment of the utility model;

[0028] Figure 3 A cross-sectional view of a telescopic assembly provided in an embodiment of the utility model.

[0029] Icons: 1-damping cylinder, 2-damping shaft, 3-damping assembly, 31-friction block, 32-friction layer, 4-adjusting assembly, 41-mounting frame, 42-first screw, 43-push plate, 44-nut plate, 45-guide rod, 46-push rod, 5-telescopic assembly, 51-telescopic rod, 511-screw hole, 52-second screw, 53-locking assembly, 531-latch pin, 532-elastic part, 533-baffle, 534-limiting groove, 535-limiting hole, 6-connecting part, 7-sealing sleeve, 8-base plate.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0036] In order to achieve the above purpose, refer to Figure 1 The embodiment of the present application provides an external friction damper, including a damping cylinder 1, a damping shaft 2, a damping assembly 3 and an adjusting assembly 4, wherein the damping shaft 2 passes through the damping cylinder 1, the damping assembly 3 is arranged in the damping cylinder 1, the adjusting assembly 4 is arranged in the damping cylinder 1 and connected to the damping assembly 3, and the adjusting assembly 4 is used to adjust the damping generated by the damping assembly 3 on the damping shaft 2;

[0037] The damping shaft 2 is provided with a telescopic assembly 5 and a connecting member 6. The telescopic assembly 5 is installed at one end of the damping shaft 2. The connecting member 6 is detachably installed at the end of the telescopic assembly 5 away from the damping shaft 2. The telescopic assembly 5 is used to adjust the length of the damping shaft 2.

[0038] The damping cylinder 1 of this embodiment is a cylindrical structure with a hollow interior. The damping shaft 2 passes through the damping cylinder 1 along the axis of the damping cylinder 1 and reciprocates along the axial direction of the damping cylinder 1. The damping component 3 is fitted with the damping shaft 2. When the damping shaft 2 reciprocates along the axial direction of the damping cylinder 1, the friction force between the damping component 3 and the damping shaft 2 is converted into heat energy, thereby dissipating the energy caused by other external forces.

[0039] By providing the adjustment component 4, the pressure between the damping component 3 and the damping shaft 2 can be further adjusted, thereby achieving the adjustment of the damping force of the friction damper.

[0040] When the friction damper is externally arranged, it will be suitable for more different working conditions. Therefore, by setting the telescopic component 5, the distance between the connecting member 6 and the damping cylinder 1 can be adjusted to adapt to more working conditions; at the same time, the connecting member 6 and the telescopic component 5 are detachably connected to install connecting members 6 of different models, which is suitable for different working conditions; wherein the telescopic component 5 and the connecting member 6 can be detachably connected by bolts.

[0041] Optionally, both ends of the damping cylinder 1 of the present embodiment are provided with sealing sleeves 7 used in conjunction with the damping shaft 2 to enhance the sealing effect between the damping cylinder 1 and the damping shaft 2 .

[0042] A base plate 8 is detachably provided at one end of the damping cylinder 1, and the damping shaft 2 passes through the base plate 8. The damping cylinder 1 and the base plate 8 are detachably connected by bolts, and the parts inside the damping cylinder 1 can be replaced or repaired by removing the base plate 8.

[0043] As an optional implementation, refer to Figure 2 The damping assembly 3 of this embodiment includes two friction blocks 31 symmetrically arranged along the damping shaft 2. The inner sides of the two friction blocks 31 are in contact with the surface of the damping shaft 2. The two friction blocks 31 are synchronously driven by the adjustment assembly 4 so that the friction force on both sides of the damping shaft 2 is more uniform.

[0044] A friction layer 32 is detachably provided on the inner side of the friction block 31. By providing a detachably connected friction layer 32, on the one hand, the material of the friction layer 32 can be adjusted and replaced according to different working conditions, and on the other hand, the friction layer 32 with a high degree of wear after long-term use can be replaced or repaired.

[0045] Furthermore, the friction layer 32 of this embodiment is made of wear-resistant, high-temperature-resistant, and corrosion-resistant materials, such as high-performance ceramics or special alloys, to ensure the stability and durability of the friction damper. Bolts can be used to achieve a detachable connection between the friction layer 32 and the friction block 31.

[0046] As an optional implementation, refer to Figure 1 , the adjustment assembly 4 of this embodiment includes a mounting frame 41, a first screw rod 42, two push plates 43 and two nut plates 44;

[0047] Two guide rods 45 are arranged in the mounting frame 41 and are spaced apart on both sides of the damping cylinder 1. Two push plates 43 are respectively arranged on both sides of the damping cylinder 1 and penetrated by the two guide rods 45.

[0048] Two nut plates 44 are installed on one of the guide rods 45 and are respectively located outside the two push plates 43 . The first screw rod 42 passes through the two nut plates 44 . The thread directions of the two nut plates 44 are opposite.

[0049] The mounting frame 41 of this embodiment is arranged around the damping cylinder 1, and the two guide rods 45 and the two push plates 43 are surrounded to form a rectangular structure, so that the two push plates 43 can slide relative to the two guide rods 45;

[0050] The thread directions of the two nut plates 44 are opposite, so that when the first screw rod 42 is rotated in one direction, the two nut plates 44 can move inward or outward synchronously. When the two nut plates 44 move inward, they drive the push plate 43 to move inward, thereby driving the friction block 31 to move. When the two nut plates 44 move outward, the push plate 43 loses pressure, and the friction block 31 is driven outward by the damping shaft 2 to push the push plate 43 to move in a direction away from the damping shaft 2.

[0051] The first screw rod 42 may replace one of the guide rods 45 to play the same role as the guide rod 45 . A handle is provided at one end of the first screw rod 42 .

[0052] Further, the two push plates 43 of this embodiment are both provided with push rods 46 on their inner sides, and the two push rods 46 penetrate the damping cylinder 1 and are respectively connected to the damping assembly 3. A seal is provided at the position where the push rod 46 penetrates the damping cylinder 1 to enhance the sealing effect of the damping cylinder 1.

[0053] As an optional implementation, refer to Figure 3 The telescopic assembly 5 of this embodiment includes a telescopic rod 51, a second screw rod 52 and a locking assembly 53. The second screw rod 52 is installed on the damping shaft 2. A screw hole 511 used in conjunction with the second screw rod 52 is provided in the telescopic rod 51. The telescopic rod 51 is arranged at one end of the second screw rod 52 away from the damping shaft 2. The locking assembly 53 is arranged on the telescopic rod 51 for locking the telescopic rod 51 with the second screw rod 52.

[0054] By setting the second screw rod 52 and the telescopic rod 51, a screw hole 511 matching the shape of the second screw rod 52 is set along the axis of one end of the telescopic rod 51, and the relative position of the damping cylinder 1 and the connecting member 6 can be adjusted by rotating the second screw rod 52 relative to the telescopic rod 51.

[0055] Among them, the locking assembly 53 includes a latch 531, an elastic member 532 and a baffle 533; the second screw 52 is provided with a limiting groove 534, the telescopic rod 51 is provided with a limiting hole 535, the latch 531 is movably arranged in the limiting hole 535, the baffle 533 is arranged on the latch 531, one end of the elastic member 532 is connected to the baffle 533, and the other end of the elastic member 532 is connected to the telescopic rod 51, and the elastic member 532 is used to drive the latch 531 to move into the limiting groove 534.

[0056] Furthermore, the second screw rod 52 is evenly provided with a plurality of limiting grooves 534 along its circumference, so that the latch 531 can be inserted into the limiting grooves 534; the locking assembly 53 is mainly used to prevent the second screw rod 52 from rotating relative to the telescopic rod 51, so that the limiting grooves 534 can be arranged parallel to the axial direction of the second screw rod 52. The elastic member 532 can use a spring.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application.

Claims

1. An external friction damper, comprising a damping cylinder, a damping shaft, a damping assembly and an adjusting assembly, characterized in that: The damping shaft passes through the damping cylinder, the damping assembly is arranged in the damping cylinder, the adjusting assembly is arranged in the damping cylinder and connected to the damping assembly, and the adjusting assembly is used to adjust the damping generated by the damping assembly on the damping shaft; The damping shaft is provided with a telescopic component and a connecting piece. The telescopic component is installed at one end of the damping shaft. The connecting piece is detachably installed at the end of the telescopic component away from the damping shaft. The telescopic component is used to adjust the length of the damping shaft.

2. The external friction damper according to claim 1, characterized in that: The damping assembly comprises two friction blocks symmetrically arranged along the damping axis, and the inner sides of the two friction blocks are in contact with the surface of the damping axis.

3. The external friction damper according to claim 2, characterized in that: A friction layer is detachably provided on the inner side of the friction block.

4. The external friction damper according to claim 1, characterized in that: The telescopic assembly and the connecting member are detachably connected via bolts.

5. The external friction damper according to claim 1, characterized in that: The adjustment assembly includes a mounting frame, a first screw rod, two push plates and two nut plates; The mounting frame is provided with two guide rods spaced apart at both sides of the damping cylinder, and the two push plates are respectively arranged at both sides of the damping cylinder and penetrated by the two guide rods; The two nut plates are installed on one of the guide rods and are respectively located outside the two push plates. The first screw tube passes through the two nut plates, and the thread directions of the two nut plates are opposite.

6. The external friction damper according to claim 5, characterized in that: A push rod is provided on one side of the two push plates facing inwards. The two push rods penetrate the damping cylinder and are respectively connected to the damping assembly.

7. The external friction damper according to claim 1, characterized in that: The telescopic assembly includes a telescopic rod, a second screw rod and a locking assembly. The second screw rod is installed on the damping shaft. A screw hole used in conjunction with the second screw rod is provided in the telescopic rod. The telescopic rod is arranged at one end of the second screw rod away from the damping shaft. The locking assembly is arranged on the telescopic rod and is used to lock the telescopic rod with the second screw rod.

8. The external friction damper according to claim 7, characterized in that: The locking assembly includes a latch, an elastic member and a baffle The second screw rod is provided with a limiting groove, the telescopic rod is provided with a limiting hole, the latch is movably arranged in the limiting hole, the baffle is arranged on the latch, one end of the elastic member is connected to the baffle, and the other end of the elastic member is connected to the telescopic rod, and the elastic member is used to drive the latch to move into the limiting groove.

9. The external friction damper according to claim 1, characterized in that: Both ends of the damping cylinder are provided with sealing sleeves used in conjunction with the damping shaft.

10. The external friction damper according to claim 1, characterized in that: A bottom plate is detachably provided at one end of the damping cylinder, and the damping shaft passes through the bottom plate.

Images