Viscous damper

Abstract

The utility model relates to the technical field of dampers, in particular to a viscous damper which comprises a damper body, the damper body is arranged between a bridge tower and a bridge girder, a tower end positioning piece is installed on the outer side of a cylinder barrel of the damper body, a beam end positioning piece is installed at the telescopic end of the damper body, and the beam end positioning piece is connected with the tower end positioning piece. A constraint position control piece is arranged on the outer side wall of a cylinder barrel of the damper body between the tower end positioning piece and the beam end positioning piece; the beam end positioning piece comprises an upper positioning lug, the top of the upper positioning lug is fixed to the bottom of a bridge girder in a bolting mode, and the lower portion of the upper positioning lug is hinged to a fixing lug fixedly installed at the telescopic end of the damper body. During installation, the positions of the two locking nuts on the tower end positioning piece can be adjusted according to needs, displacement and locking of the lower positioning sleeve and the lower positioning lug base between the two locking nuts in the horizontal direction are controlled, control over hinge points is guaranteed, and a better installation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a viscous damper. Background Art

[0002] The viscous damper is a velocity-dependent damping device that reduces structural vibration and seismic shock through the resistance generated by fluid movement. Its internal structure is basically of the jet type. Through the reciprocating motion of the piston, the liquid flows through the small holes on the piston head to provide damping force, which can convert the mechanical energy input by the ground motion into heat energy and dissipate it evenly, thereby reducing the vibration response of the structure.

[0003] Viscous dampers are widely used in super high-rise buildings to protect the structure by reducing vibrations caused by earthquakes. Similarly, in bridge engineering, viscous dampers can alleviate vibrations caused by wind loads, temperature changes and earthquakes, improving the stability and life of the bridge.

[0004] For example, a viscous damper is disclosed in the patent document with patent publication number CN214194107U, whose main structure includes a cylinder with a piston arranged inside the cylinder; a piston rod connected to the piston, one end of the piston rod extending out of the cylinder and provided with an ear plate for connecting to the main beam; a connecting component hinged on the tower end support below it, which is fixed to the side of the cylinder away from the ear plate; and a balancing cylinder for balancing the gravity of the cylinder, which is fixed to the side of the connecting component away from the cylinder.

[0005] It can be seen that the viscous damper mainly adopts the tower end support to avoid the weight of the cylinder from being transferred to the piston rod to achieve the purpose of increasing the overall service life of the viscous damper when working. However, this method of using two hinge points to support the horizontal vibration damping has certain shortcomings: first, the tower end support and the bridge beam end support are

[0006] As two hinge supports, the position of the hinges relative to the viscous damper cylinder remains fixed after installation, and the damping stroke cannot be adjusted after installation; secondly, when the cylinder size and length of the viscous damper are large, it is only hinged at the end of the cylinder of the viscous damper and the front end of the piston rod. Due to the influence of horizontal deadweight, there will be a vertical relative deviation between the inner end seal of the piston rod and the inner cavity of the cylinder, which will still increase the wear during the extension and retraction process.

[0007] To this end, the utility model optimizes and improves the problems existing in the horizontal installation of the viscous damper in the prior art, and hereby proposes a new type of viscous damper with stable support to better solve the problems existing in the prior art. Utility Model Content

[0008] The utility model is to solve one of the above-mentioned technical problems, and the technical solution adopted is: a viscous damper, including a horizontally arranged damper body, the damper body is arranged between a bridge tower and a bridge main beam, a tower end positioning piece is installed on the outer side of the cylinder of the damper body, a beam end positioning piece is installed at the telescopic end of the damper body, and a constraint control piece is arranged on the outer side wall of the cylinder of the damper body between the tower end positioning piece and the beam end positioning piece; the beam end positioning piece includes an upper positioning ear seat, the top of the upper positioning ear seat is bolted and fixed to the bottom of the bridge main beam, and the lower part of the upper positioning ear seat is hinged to the fixed ear seat fixedly installed on the telescopic end of the damper body.

[0009] In any of the above schemes, preferably, the tower end positioning member includes a lower positioning sleeve arranged on the rear end outer wall of the cylinder, and locking nuts are screwed and installed at the external threads on both sides of the lower positioning sleeve respectively, and the two locking nuts cooperate to clamp the lower positioning sleeve, and a lower positioning ear seat is fixedly welded to the bottom of the lower positioning sleeve, and a tower end positioning seat is hinged below the lower positioning ear seat, and the bottom of the tower end positioning seat is bolted and fixed to the top of the bridge tower.

[0010] In any of the above solutions, preferably, a blocking end cover is detachably fixedly mounted on the rear end of the cylinder of the damper body.

[0011] In any of the above schemes, it is preferred that the constraint control member includes an annular steel sleeve movably mounted on the outer wall of the cylinder, a T-shaped slider is fixedly mounted on the top of the annular steel sleeve, the upper part of the T-shaped slider is slidably engaged in the slide groove of the horizontal slide rail, and the horizontal slide rail is bolted and fixed to the bottom of the bridge main beam.

[0012] In any of the above solutions, preferably, upper reinforcing ribs are integrally formed on both inner and outer side walls of the upper positioning ear seat.

[0013] In any of the above solutions, preferably, lower reinforcing ribs are integrally formed on both inner and outer side walls of the tower end positioning seat.

[0014] In any of the above schemes, preferably, the thread on the outer side wall of the rear end of the cylinder is a trapezoidal external thread.

[0015] In any of the above solutions, preferably, each of the locking nuts is a anti-loosening nut.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The viscous damper designed in the utility model is suitable for being installed between the bridge tower and the bridge main beam to maintain a horizontal setting, and to achieve damping and buffering of the horizontal vibration displacement of the bridge main beam. The cooperation between the beam end positioning piece and the tower end positioning piece can effectively ensure the stability of the horizontal upward support positioning and ensure the effect of horizontal support.

[0018] 2. During installation, the positions of the two locking nuts on the tower end positioning piece can be adjusted as needed, so as to control the horizontal displacement and locking of the lower positioning sleeve and the lower positioning ear seat between the two locking nuts, ensure the control of the hinge point, and achieve a better installation effect.

[0019] 3. Both locking nuts adopt anti-loosening nut structure, which can effectively prevent loosening or falling off when dealing with vibration after installation. In addition, according to actual needs, the connection parts of each locking nut can be further spot welded to prevent loosening after construction is completed.

[0020] 4. By adding a restraining control part between the two hinge points, the support for the outer end of the cylinder and the inner end of the telescopic end can be further guaranteed, effectively reducing the problem of excessive stress on the lower part of the middle sealing part due to gravity when dealing with long-distance viscous dampers, so that the sealing parts are evenly stressed and the service life of the sealing ring is effectively extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the specific implementation of the utility model, the following will briefly introduce the drawings required for the specific implementation. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, each element or component is not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a schematic structural diagram of Example 1 of the viscous damper of the utility model.

[0023] Figure 2 This is a schematic structural diagram of Example 2 of the viscous damper of the utility model.

[0024] Figure 3 It is a partial structural schematic diagram of the damper body of the utility model.

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the restraint position control member of the utility model.

[0026] In the figure, 1, damper body; 101, telescopic end; 102, cylinder; 103, plugging end cover; 2, bridge tower; 3, bridge main beam; 4, upper positioning ear seat; 5, fixing ear seat; 6, lower positioning sleeve; 7, external thread; 8, locking nut; 9, lower positioning ear seat; 10, tower end positioning seat; 11, upper reinforcement rib; 12, lower reinforcement rib; 13, annular steel sleeve; 14, T-shaped slider; 15, horizontal slide rail. DETAILED DESCRIPTION

[0027] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the scope of protection of the utility model. Figure 1-Figure 4 as shown in .

[0028] Embodiment 1: A viscous damper comprises a horizontally arranged damper body 1, wherein the damper body 1 is arranged between a bridge tower 2 and a bridge main beam 3, a tower end locator is installed on the outer side of a cylinder 102 of the damper body 1, and a beam end locator is installed at the telescopic end 101 of the damper body 1; the beam end locator comprises an upper locating ear seat 4, the top of the upper locating ear seat 4 is bolted and fixed to the bottom of the bridge main beam 3, and the lower part of the upper locating ear seat 4 is hinged to the fixed ear seat 5 fixedly installed at the telescopic end 101 of the damper body 1.

[0029] During installation, the viscous damper of the utility model relies on the cooperation between the tower end positioning piece and the beam end positioning piece to complete the point positioning of the entire damper body 1, effectively ensuring that it can play a role in stably alleviating the impact and damage caused by the horizontal load on the building structure after connection.

[0030] In any of the above schemes, it is preferred that the tower end positioning member includes a lower positioning sleeve 6 arranged on the rear end outer wall of the cylinder 102, and locking nuts 8 are respectively screwed and installed at the external threads 7 on both sides of the lower positioning sleeve 6, and the two locking nuts 8 cooperate to clamp the lower positioning sleeve 6, and a lower positioning ear seat 9 is fixedly welded to the bottom of the lower positioning sleeve 6, and a tower end positioning seat 10 is hinged below the lower positioning ear seat 9, and the bottom of the tower end positioning seat 10 is bolted and fixed to the top of the bridge tower 2; the lower positioning sleeve 6 designed in the present scheme can achieve follow-up translation under the action of screwing on the two locking nuts 8, so as to achieve the purpose of controlling the current lower positioning sleeve 6 and the lower positioning ear seat 9 fixedly installed at the bottom thereof to shift, and when moved to the appropriate position, the lower positioning sleeve 6 and the lower positioning ear seat 9 can be locked and positioned by controlling the locking of the two locking nuts 8, thereby achieving the purpose of adjusting the installation position of the lower positioning ear seat 9 as needed.

[0031] In any of the above solutions, preferably, a blocking end cover 103 is detachably fixedly mounted on the rear end of the cylinder 102 of the damper body 1 .

[0032] Before installing the tower end positioning piece, the blocking end cover 103 can be disassembled as needed, and then the locking nut 8 and the lower positioning sleeve 6 can be installed.

[0033] In any of the above solutions, preferably, upper reinforcing ribs 11 are integrally formed on both inner and outer side walls of the upper positioning ear seat 4 .

[0034] By adding the upper reinforcing ribs 11, the structural strength of the entire upper positioning ear seat 4 can be effectively guaranteed, and the stability of the entire structure during use can be effectively guaranteed.

[0035] In any of the above solutions, preferably, lower reinforcing ribs 12 are integrally formed on both inner and outer side walls of the tower end positioning seat 10 .

[0036] By adding the lower reinforcing ribs 12, the structural strength of the entire lower positioning ear seat 9 can be effectively ensured, and the stability of the entire structure during use can be effectively ensured.

[0037] In any of the above solutions, it is preferred that the thread on the outer side wall of the rear end of the cylinder 102 is a trapezoidal external thread.

[0038] The trapezoidal external thread can ensure the smoothness of the adjustment of the locking nut 8, and at the same time ensure the locking effect and load resistance after the locking is completed.

[0039] In any of the above solutions, it is preferred that each of the locking nuts 8 is a locking nut.

[0040] Anti-loosening nuts can effectively prevent loosening when dealing with vibrations and reduce the probability of loosening and falling off.

[0041] Embodiment 2: A viscous damper comprises a horizontally arranged damper body 1, wherein the damper body 1 is arranged between a bridge tower 2 and a bridge main beam 3, a tower end locator is installed on the outer side of the cylinder 102 of the damper body 1, a beam end locator is installed at the telescopic end 101 of the damper body 1, and a constraint control member is arranged on the outer side wall of the cylinder 102 of the damper body 1 between the tower end locator and the beam end locator; the beam end locator comprises an upper locating ear seat 4, the top of the upper locating ear seat 4 is bolted and fixed to the bottom of the bridge main beam 3, and the lower part of the upper locating ear seat 4 is hinged to the fixed ear seat 5 fixedly installed at the telescopic end 101 of the damper body 1.

[0042] During installation, the viscous damper in the utility model relies on the cooperation of the tower end positioning piece and the beam end positioning piece to complete the point positioning of the entire damper body 1, effectively ensuring that it can play a role in stably alleviating the impact and damage caused by the horizontal load on the building structure after connection; by adding a constraint and control piece in the middle, the vertical support of the outer end of the damper body 1 can be guaranteed, and the internal seals can be guaranteed not to be affected by gravity, the force uniformity of the internal seals can be guaranteed, and the service life of the seals can be improved; in addition, when the cylinder 102 of the damper body 1 shows a tendency to shift, it can play the purpose of constraint positioning.

[0043] In any of the above schemes, it is preferred that the tower end positioning member includes a lower positioning sleeve 6 arranged on the rear end outer wall of the cylinder 102, and locking nuts 8 are screwed and installed at the external threads 7 on both sides of the lower positioning sleeve 6, and the two locking nuts 8 cooperate to clamp the lower positioning sleeve 6, and a lower positioning ear seat 9 is fixedly welded to the bottom of the lower positioning sleeve 6, and a tower end positioning seat 10 is hinged below the lower positioning ear seat 9, and the bottom of the tower end positioning seat 10 is bolted and fixed to the top of the bridge tower 2.

[0044] It should be noted that the lower positioning sleeve 6 realizes follow-up translation under the action of screwing the two locking nuts 8, so as to achieve the purpose of controlling the displacement of the current lower positioning sleeve 6 and the lower positioning ear seat 9 fixedly installed at the bottom thereof.

[0045] When moved to a suitable position, the lower positioning sleeve 6 and the lower positioning ear seat 9 can be locked and positioned by controlling the locking of the two locking nuts 8, thereby achieving the purpose of adjusting the installation position of the lower positioning ear seat 9 as needed.

[0046] In any of the above solutions, preferably, a blocking end cover 103 is detachably fixedly mounted on the rear end of the cylinder 102 of the damper body 1 .

[0047] Before installing the tower end positioning piece, the blocking end cover 103 can be disassembled as needed, and then the locking nut 8 and the lower positioning sleeve 6 can be installed.

[0048] In any of the above schemes, it is preferred that the constraint control component includes an annular steel sleeve 13 movably mounted on the outer wall of the cylinder, and a T-shaped slider 14 is fixedly mounted on the top of the annular steel sleeve 13. The upper part of the T-shaped slider 14 is slidably engaged in the slide groove of the horizontal slide rail 15, and the horizontal slide rail 15 is bolted and fixed to the bottom of the bridge main beam 3.

[0049] The annular steel sleeve 13 designed in the constraint control part can further ensure the support for the outer end of the cylinder 102 and the inner end of the telescopic end 101, effectively reducing the problem of excessive force on the lower part of the middle sealing part of the long-distance viscous damper body due to gravity, so that the sealing component is evenly stressed, effectively extending the service life of the sealing ring; in addition, by setting the T-shaped slider 14 and the slide groove of the horizontal slide rail 15, the displacement position of the current annular steel sleeve 13 can be adjusted and changed as needed during construction, so as to achieve the purpose of supporting and restraining at different positions.

[0050] In any of the above solutions, preferably, upper reinforcing ribs 11 are integrally formed on both inner and outer side walls of the upper positioning ear seat 4. By adding the upper reinforcing ribs 11, the structural strength of the entire upper positioning ear seat 4 can be effectively guaranteed, and the stability of the entire structure during use can be effectively guaranteed.

[0051] In any of the above solutions, preferably, lower reinforcing ribs 12 are integrally formed on both inner and outer side walls of the tower end positioning seat 10. By adding the lower reinforcing ribs 12, the structural strength of the entire lower positioning ear seat 9 can be effectively guaranteed, and the stability of the entire structure during use can be effectively guaranteed.

[0052] In any of the above solutions, it is preferred that the thread on the rear end outer wall of the cylinder 102 is a trapezoidal external thread. The trapezoidal external thread can ensure the smoothness of the locking nut 8 when adjusting, and at the same time ensure the locking effect and load resistance after the locking is completed.

[0053] In any of the above solutions, preferably, each of the locking nuts 8 is a locking nut. The locking nut can effectively ensure the anti-loosening effect when dealing with vibration and reduce the probability of loosening and falling off.

[0054] In summary, it can be seen that the viscous damper of the present design is suitable for being installed between the bridge tower 2 and the bridge main beam 3 to maintain a horizontal setting, and to achieve damping and buffering of the horizontal vibration displacement of the bridge main beam 3. Relying on the cooperation between the beam end positioning piece and the tower end positioning piece, the stability of the horizontal upward support positioning can be effectively guaranteed, and the effect of horizontal support can be guaranteed; during installation, the positions of the two locking nuts on the tower end positioning piece can be adjusted as needed, so as to control the horizontal displacement and locking of the lower positioning sleeve 6 and the lower positioning ear seat 9 between the two locking nuts, and ensure the control of the hinge point, so as to achieve a better installation effect; the two Each locking nut adopts an anti-loosening nut structure, which can effectively prevent loosening or falling off when dealing with vibration after installation; in addition, according to actual needs, the connection parts of each locking nut can be further spot-welded to prevent loosening after construction is completed; by adding a constraint control part between the two hinge points, the support for the outer end of the cylinder 102 and the inner end of the telescopic end 101 can be further guaranteed, effectively reducing the problem of excessive stress on the lower part of the middle sealing part due to gravity when dealing with long-distance viscous dampers, so that the sealing components are evenly stressed, effectively extending the service life of the sealing ring.

[0055] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. For technicians in this technical field, any replacement improvements or changes made to the implementation methods of the utility model fall within the protection scope of the utility model.

[0056] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A viscous damper, characterized in that: It includes a horizontally arranged damper body, which is arranged between a bridge tower and a bridge main beam, a tower end positioning piece is installed on the outer side of the cylinder of the damper body, a beam end positioning piece is installed at the telescopic end of the damper body, and a restraining control piece is arranged on the outer side wall of the cylinder of the damper body between the tower end positioning piece and the beam end positioning piece; the beam end positioning piece includes an upper positioning ear seat, the top of the upper positioning ear seat is bolted and fixed to the bottom of the bridge main beam, and the lower part of the upper positioning ear seat is hinged to the fixed ear seat fixedly installed at the telescopic end of the damper body.

2. A viscous damper according to claim 1, characterized in that: The tower end positioning member includes a lower positioning sleeve arranged on the rear end outer wall of the cylinder, and locking nuts are screwed and installed at the external threads on both sides of the lower positioning sleeve respectively, and the two locking nuts cooperate to clamp the lower positioning sleeve, and a lower positioning ear seat is fixedly welded to the bottom of the lower positioning sleeve, and a tower end positioning seat is hinged below the lower positioning ear seat, and the bottom of the tower end positioning seat is bolted and fixed to the top of the bridge tower.

3. A viscous damper according to claim 2, characterized in that: A blocking end cover is detachably fixedly mounted on the rear end of the cylinder of the damper body.

4. A viscous damper according to claim 3, characterized in that: The constraint control component includes an annular steel sleeve movably mounted on the outer wall of the cylinder, a T-shaped slider is fixedly mounted on the top of the annular steel sleeve, the upper part of the T-shaped slider is slidably engaged in the slide groove of the horizontal slide rail, and the horizontal slide rail is bolted and fixed to the bottom of the bridge main beam.

5. A viscous damper according to claim 4, characterized in that: Upper reinforcing ribs are integrally formed on both inner and outer side walls of the upper positioning ear seat.

6. A viscous damper according to claim 5, characterized in that: Lower reinforcing ribs are integrally formed on both inner and outer side walls of the tower end positioning seat.

7. A viscous damper according to claim 6, characterized in that: The thread on the outer side wall of the rear end of the cylinder barrel is a trapezoidal external thread.

8. A viscous damper according to claim 7, characterized in that: Each of the locking nuts is a locking nut.

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