Mechanical damper

Abstract

The utility model relates to a mechanical damper which comprises a shell and a guide rod axially arranged in the shell, the guide rod is vertically provided with a mounting cavity for mounting a mounting seat, the periphery of the mounting seat is sleeved with a first elastic piece, and the first elastic piece is arranged between the mounting seat and the side wall of the mounting cavity. A mounting seat mounting cavity is vertically formed in the guide rod, a first elastic piece is arranged on the periphery of the mounting seat in a sleeving mode, a friction block is arranged at the position, located on the periphery of the first elastic piece, of the end of the mounting seat in a sleeving mode, one end of the friction block abuts against the first elastic piece, and the other end of the friction block abuts against the inner wall of the shell. And after the friction blocks are abraded in use, the first elastic pieces can promote the friction blocks to keep abutting for compensation.

Description

TECHNICAL FIELD

[0001] The utility model relates to damper technical field, concretely relates to a mechanical damper. BACKGROUND

[0002] The mechanical damper is a kind of key mechanical device that is by converting kinetic energy into heat energy, friction energy etc. dissipate, to inhibit vibration, buffer impact, its core structure is usually composed of piston rod, damping piece, elastic element and sealing shell, is widely used in building anti-seismic, automobile suspension, precision instrument shockproof, industrial equipment noise reduction etc.

[0003] The damper of the utility model discloses a kind of damper;Including shell and adjusting device, adjusting device includes front end cover, rear end cover, adjusting screw thread cylinder, pressure block, spring, piston rod, jack and first wear-resistant strip, when using, the threaded end portion of shell carries out damper fixed installation, piston rod external end portion is connected with external parts, when working, piston rod is under external force, will slide in shell, to push jack to move, jack moves will push pressure block to move, pressure block moves will compress spring, and simultaneously slide in adjusting screw thread cylinder, at this time, spring is according to the elastic restoring force of itself and is buffered and efficiency, when needing to adjust, adjusting screw thread cylinder can be rotated, to change the position of pressure block and jack, to make the sliding position of piston rod in shell can be adjusted, to further realize that when damper is used, the working parameter adjustment of damper can be carried out, but the wear-resistant strip of this technology is directly sleeved on piston rod, although the technology further enhances wear-resistant effect by setting wear-resistant layer outside, but wear-resistant strip still can be due to the gap generated by friction with shell inner wall under long time use, to cause damping effect to drop, so this technology still has certain improvement space. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a mechanical damper in view of the deficiencies of the prior art.

[0005] To achieve the above object, the utility model provides the following technical scheme, a kind of mechanical damper, including shell and the guide rod being axially arranged in shell, it is characterized in that: the guide rod is vertically provided with the installation cavity for the installation of mounting seat, the mounting seat is peripherally provided with the first elastic element, the first elastic element is arranged between the side wall of mounting seat and installation cavity, the end of mounting seat is peripherally provided with friction block outside the first elastic element, the friction block one end and the first elastic element abut the other end and the inner wall of shell abut.

[0006] The technical scheme is adopted, the mounting cavity is vertically arranged on the guide rod, the first elastic member is arranged on the outer periphery of the mounting seat, the friction block is arranged on the end of the mounting seat and located on the outer periphery of the first elastic member, one end of the friction block is in abutment with the first elastic member, the other end is in abutment with the inner wall of the shell, the first elastic member continuously applies radial pressure to the friction block, the friction block is always in close contact with the inner wall of the shell, the problem that the wear-resistant strip in the prior art is separated from the inner wall of the shell due to long-term friction is effectively avoided, and the wear resistance and structural stability of the damper are improved, and the damping effect is stable for a long time.

[0007] The mechanical damper can be further provided with a moving groove for mounting and vertically moving the friction block at the top of the guide rod, and a fixing hole is arranged at the bottom of the mounting cavity, and a fixing member for fixing the mounting seat is arranged in the fixing hole.

[0008] The technical scheme is adopted, the mounting cavity is vertically arranged on the guide rod, the first elastic member is arranged on the outer periphery of the mounting seat, the friction block is arranged on the end of the mounting seat and located on the outer periphery of the first elastic member, one end of the friction block is in abutment with the first elastic member, the other end is in abutment with the inner wall of the shell, the first elastic member continuously applies radial pressure to the friction block, the friction block is always in close contact with the inner wall of the shell, the problem that the wear-resistant strip in the prior art is separated from the inner wall of the shell due to long-term friction is effectively avoided, and the wear resistance and structural stability of the damper are improved, and the damping effect is stable for a long time.

[0009] The mechanical damper can be further provided with a moving groove for mounting and vertically moving the friction block at the top of the guide rod, and a fixing hole is arranged at the bottom of the mounting cavity, and a fixing member for fixing the mounting seat is arranged in the fixing hole.

[0010] The technical scheme is adopted, the mounting cavity is vertically arranged on the guide rod, the first elastic member is arranged on the outer periphery of the mounting seat, the friction block is arranged on the end of the mounting seat and located on the outer periphery of the first elastic member, one end of the friction block is in abutment with the first elastic member, the other end is in abutment with the inner wall of the shell, the first elastic member continuously applies radial pressure to the friction block, the friction block is always in close contact with the inner wall of the shell, the problem that the wear-resistant strip in the prior art is separated from the inner wall of the shell due to long-term friction is effectively avoided, and the wear resistance and structural stability of the damper are improved, and the damping effect is stable for a long time.

[0011] The mechanical damper can be further provided with a moving groove for mounting and vertically moving the friction block at the top of the guide rod, and a fixing hole is arranged at the bottom of the mounting cavity, and a fixing member for fixing the mounting seat is arranged in the fixing hole.

[0012] By adopting the above technical solution, the impact force of the push rod is buffered and the elastic part is limited through the combined design of the sleeve rod, the second elastic part and the double gasket. The second elastic part provides flexible buffering, the first gaskets at both ends effectively prevent its axial movement, and the second gasket on the periphery limits the vertical displacement. The three work together to ensure that the elastic part always deforms stably within the preset trajectory, avoiding the attenuation of buffering efficiency or jamming of components due to misalignment.

[0013] The above-mentioned mechanical damper can be further configured as follows: the push rod includes a rod body and a push piece, the sealing structure includes a first sealing groove arranged around the push piece and the outer shell, an annular sealing ring is provided in the first sealing groove, a second sealing groove is provided between the rod body and the push piece, and an oil seal is provided on the outer periphery of the rod and placed in the second sealing groove.

[0014] By adopting the above technical solution, the first sealing groove and the annular sealing ring between the pusher and the housing form a radial static seal to block the invasion of external impurities; the second sealing groove between the rod body and the pusher cooperates with the oil seal to achieve axial dynamic sealing to prevent leakage of internal lubricating medium.

[0015] The above-mentioned mechanical damper may be further configured as follows: a plurality of shaft sleeves are sleeved between the guide rod and the housing.

[0016] By adopting the above technical solution, the direct contact between the guide rod and the housing is converted into a low-friction fit between the sleeve and the housing through the rigid support and sliding guide function of the sleeve, effectively reducing the wear rate of the guide rod during reciprocating motion, while improving the radial positioning accuracy, and avoiding the problem of increased clearance or shaking caused by long-term use.

[0017] The beneficial effects of the present invention are as follows: by vertically opening a mounting seat mounting cavity on the guide rod and sleeved with a first elastic member on the outer periphery of the mounting seat, the first elastic member is used to continuously apply radial pressure to the friction block to ensure that the friction block is always in close contact with the inner wall of the outer shell. After the friction block is worn during use, the first elastic member can cause the friction block to maintain abutment for compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the utility model;

[0019] Figure 2 This is a structural sectional view of the utility model;

[0020] Figure 3 This is a schematic diagram of the guide rod structure of the present utility model;

[0021] Figure 4 This is an enlarged view of the structure at point A of the present utility model;

[0022] Label notes: 1 - shell, 2 - guide rod, 3 - mounting seat, 4 - mounting cavity, 5 - first elastic member, 6 - friction block, 7 - moving groove, 8 - fixed hole, 9 - fixing member, 10 - push rod, 11 - sleeve rod, 12 - second elastic member, 13 - first gasket, 14 - second gasket, 15 - rod body, 16 - push piece, 17 - first sealing groove, 18 - annular sealing ring, 19 - second sealing groove, 20 - oil seal, 21 - shaft sleeve. DETAILED DESCRIPTION

[0023] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0024] As Figures 1-4 The utility model provides the following technical scheme, a mechanical damper, including shell 1 and the guide rod 2 of setting in shell 1 in axial, the installation cavity 4 of vertical setting of guide rod 2 is provided with the installation of mounting seat 3, the first elastic member 5 is set to the side wall between mounting seat 3 and installation cavity 4, the outer circumferential sleeve of mounting seat 3 end part is provided with the friction block 6 of first elastic member 5, the one end of friction block 6 and the abutment of first elastic member 5 the other end and the abutment of shell 1 inner wall, through the vertical setting installation cavity 4 of mounting seat 3 in guide rod 2, and the outer circumferential sleeve of first elastic member 5 is set to mounting seat 3, simultaneously, the outer circumferential sleeve of friction block 6 is set to mounting seat 3 end part and is located first elastic member 5, make the one end of friction block 6 and the abutment of first elastic member 5 the other end and the abutment of shell 1 inner wall, utilize first elastic member 5 to continuously exert radial pressure to friction block 6, ensure that friction block 6 always closely contacts with shell 1 inner wall, effectively avoid the problem that the wear-resistant strip in traditional technology produces the gap with shell inner wall because of long-term friction, to significantly improve the wear resistance and structural stability of damper, guarantee the long-term stability of damping effect, the top of guide rod 2 in installation cavity 4 is equipped with the moving groove 7 of the installation of friction block 6 and can vertically move, the fixed hole 8 is set up in the bottom of installation cavity 4, the fixed hole 8 is equipped with the fixing member 9 of fixed mounting seat 3, the moving groove 7 of the vertical movement of friction block 6 is set up in the top of installation cavity 4 of guide rod 2, the positioning of mounting seat 3 is combined with the fixing member 9 in the fixed hole 8 of bottom, the moving groove 7 provides the vertical displacement space for friction block 6, ensure that it always maintains uniform contact with shell 1 inner wall under the action of first elastic member 5, avoid the part loosening or displacement deviation caused by long-term vibration.

[0025] As Figures 1-4The utility model provides technical scheme is provided below, a kind of mechanical damper, shell 1 is located in guiding rod 2 side and is equipped with the push rod 10 of push guiding rod 2 displacement, push rod 10 and guiding rod 2 between being equipped with buffer structure, push rod 10 and shell 1 between being equipped with sealing structure, in shell 1 and guiding rod 2 between additional push rod 10 with buffer structure, and sealing structure is arranged between push rod 10 and shell 1, realize damper power transmission, buffer structure can weaken the direct action of external impact force to guiding rod 2, reduce the instantaneous load and wear of core component;Sealing structure can effectively block dust, liquid and other impurities invade shell inner cavity, avoid the pollution or corrosion of the contact interface of friction block 6 and inner wall, buffer structure includes the sleeve rod 11 of guiding rod 2 side towards push rod 10 setting, is equipped with second elastic element 12, sleeve rod 11 is located in second elastic element 12 both ends and is equipped with the first gasket 13 of preventing the axial migration of second elastic element 12, second elastic element 12 periphery is equipped with the second gasket 14 of preventing the vertical migration of second elastic element 12, by the combined design of sleeve rod 11, second elastic element 12 and double gasket, realize the buffering of push rod 10 impact force and the location of elastic element, second elastic element 12 provides flexible buffering, both ends first gasket 13 effectively prevent its axial migration, periphery second gasket 14 then limit vertical displacement, the three synergies ensure that elastic element is always in the stable deformation within preset track, avoid the buffering efficiency attenuation or component jamming caused by misplacement, push rod 10 includes rod body 15 and push piece 16, sealing structure includes the first sealing groove 17 of being set around between push piece 16 and shell 1, annular sealing ring 18 is arranged in first sealing groove 17, second sealing groove 19 is arranged between rod body 15 and push piece 16, oil seal 20 is arranged on the periphery of rod body 15 and is placed in second sealing groove 19, and the first sealing groove 17 between push piece 16 and shell 1 and annular sealing ring 18 form radial static seal, block the invasion of external impurities;Second sealing groove 19 between rod body 15 and push piece 16 cooperates with oil seal 20 to realize axial dynamic sealing, prevent internal lubricating medium from leaking, a plurality of shaft sleeves 21 are sleeved between guiding rod 2 and shell 1, the rigid support and sliding guide effect of shaft sleeve 21 convert the direct contact of guiding rod 2 and shell 1 into the low friction cooperation of shaft sleeve 21 and the two, effectively reduce the wear rate of guiding rod 2 in reciprocating motion, improve radial positioning accuracy, avoid the problem of gap increase or shaking caused by long-term use.

[0026] The utility model has the advantages that: by vertically setting installation seat 3 installation cavity 4 on guiding rod 2, and by sleeving first elastic element 5 on the periphery of installation seat 3, the radial pressure is continuously applied to friction block 6 by first elastic element 5, so that friction block 6 is kept in close contact with the inner wall of shell 1, and first elastic element 5 can compensate for the abutment of friction block 6 after the wear of friction block 6.

Claims

1. A mechanical damper comprising a housing and a guide rod axially disposed within the housing, characterized in that: The guide rod is vertically provided with an installation cavity for installing the installation seat, and the installation seat and the outer periphery are provided with a first elastic member, and the first elastic member is arranged between the installation seat and the side wall of the installation cavity, and the end of the installation seat is located on the outer periphery of the first elastic member and is provided with a friction block, and one end of the friction block abuts against the first elastic member and the other end abuts against the inner wall of the shell.

2. A mechanical damper according to claim 1, characterized in that: The guide rod is located at the top of the installation cavity and is provided with a movable groove for the friction block to be installed and can move vertically. The bottom of the installation cavity is provided with a fixing hole, and a fixing piece for fixing the mounting seat is provided in the fixing hole.

3. A mechanical damper according to claim 2, characterized in that: The shell is provided with a push rod on one side of the guide rod for pushing the guide rod to move, a buffer structure is provided between the push rod and the guide rod, and a sealing structure is provided between the push rod and the shell.

4. A mechanical damper according to any one of claims 1 to 3, characterized in that: The buffer structure includes a sleeve rod arranged on one side of the guide rod toward the push rod, the sleeve is provided with a second elastic member, the sleeve rod is located at both ends of the second elastic member and is provided with a first gasket to prevent the second elastic member from moving axially, and the outer periphery of the second elastic member is provided with a second gasket to prevent the second elastic member from moving vertically.

5. A mechanical damper according to claim 4, characterized in that: The push rod includes a rod body and a push piece. The sealing structure includes a first sealing groove arranged around the push piece and the outer shell. An annular sealing ring is provided in the first sealing groove. A second sealing groove is provided between the rod body and the push piece. An oil seal is provided on the outer periphery of the rod and placed in the second sealing groove.

6. A mechanical damper according to claim 5, characterized in that: A plurality of shaft sleeves are sleeved between the guide rod and the shell.

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