Twisting type multi-frequency damper

Abstract

The utility model relates to the technical field of vibration-proof hammers, and discloses a twisted multi-frequency vibration-proof hammer, which comprises a wire clamp assembly, a rubber mat and a pre-twisted armor rod, the wire clamp assembly is connected with a steel strand, hammer heads are fixed at the two ends of the steel strand, the rubber mat sleeves an electric wire, and the peripheral diameter of the end part of the rubber mat is greater than the peripheral diameter of the middle part of the rubber mat; the pre-twisted armor rod is wrapped outside the rubber mat, and two ends of the pre-twisted armor rod are wound and fixed on the outer side of the electric wire; the wire clamp assembly is clamped on the pre-twisted armor rod outside the side surface of the rubber mat, the design that the peripheral diameter of the end part of the rubber mat is larger than the peripheral diameter of the middle part of the rubber mat increases the contact area between the rubber mat and a wire, so that the friction force is improved, and meanwhile, the pre-twisted armor rod is additionally arranged outside the rubber mat, so that the service life of the wire is prolonged. The friction force between the rubber mat and the wire clamp assembly is increased, meanwhile, the wire can be protected, the anti-vibration device is prevented from sliding under the action of external force such as wind power, the stability and reliability of the anti-vibration device are improved, and safe operation of a power transmission line is ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of anti-vibration hammers, in particular to a twisted multi-frequency anti-vibration hammer BACKGROUND

[0002] The anti-vibration hammer is a device for reducing or eliminating the vibration of a conductor caused by wind force, and is mainly used for high-voltage overhead transmission lines. The device can protect the conductor from fatigue damage by absorbing and dissipating the vibration energy generated by the wind force.

[0003] The anti-vibration hammer is usually composed of a weight of a certain mass, galvanized steel wire with high elasticity and high strength, and a wire clamp. The vibration absorption performance of the anti-vibration hammer is related to the effective working frequency range of the anti-vibration hammer. When the conductor vibrates, the relative movement of the anti-vibration hammer suspended on the conductor absorbs the vibration energy of the conductor, thereby reducing and eliminating the vibration of the conductor.

[0004] However, the wire clamp in the prior art is prone to sliding on the conductor or ground wire after fixing the anti-vibration hammer to the conductor. The anti-vibration hammer has a specified design installation position on the transmission line. Once it slips, the anti-vibration effect will be lost. If it is not found and corrected in time, it may eventually lead to vibration fatigue damage of the overhead transmission line conductor. CONTENT OF THE UTILITY MODEL

[0005] In order to avoid the anti-vibration hammer from sliding on the conductor, a twisted multi-frequency anti-vibration hammer is provided.

[0006] The above application purpose of the application is achieved by the following technical scheme:

[0007] The twisted multi-frequency anti-vibration hammer comprises a wire clamp assembly, a steel strand connected to the wire clamp assembly, hammer heads fixed at both ends of the steel strand, a rubber pad and a pre-twisted wire protection strip. The rubber pad is sleeved outside the conductor, and the outer diameter of the end portion of the rubber pad is larger than the outer diameter of the middle portion of the rubber pad. The pre-twisted wire protection strip is wrapped outside the rubber pad, and both ends of the pre-twisted wire protection strip are wrapped and fixed to the outer side of the conductor. The wire clamp assembly is clamped on the pre-twisted wire protection strip outside the side surface of the rubber pad.

[0008] Through the design that the outer diameter of the end portion of the rubber pad is larger than the outer diameter of the middle portion of the rubber pad, the pressure of the conductor on the wire clamp can be more evenly distributed, the conductor damage or wire clamp deformation caused by excessive local pressure can be avoided, the contact area between the rubber pad and the conductor is increased, thereby the friction force is improved. Meanwhile, the pre-twisted wire protection strip is additionally arranged outside the rubber pad, which can increase the friction force between the rubber pad and the wire clamp assembly and protect the conductor, avoid the anti-vibration device from sliding under the action of wind force and the like, improve the stability and reliability of the anti-vibration device, and ensure the safe operation of the transmission line.

[0009] Optionally, the fastener is further included, and the wire clamp assembly comprises a wire clamp body and a wire clamp cover, the wire clamp body is provided with a hinged shaft at one end away from the steel strand, one end of the wire clamp cover is hinged to the wire clamp body through the hinged shaft, and the other end is connected to the wire clamp body through the fastener.

[0010] By adopting the technical scheme, the wire clamp body and the wire clamp cover are hinged and mounted, which facilitates quick installation and disassembly of the wire clamp assembly on the pre-stranded wire protection strip, and improves the maintenance efficiency of the wire clamp assembly.

[0011] Optionally, the pre-stranded wire protection strip is arranged in a spiral shape.

[0012] By adopting the technical scheme, the spiral pre-stranded wire protection strip can increase the rigidity of the conductor at the suspension point, suppress the bending and extrusion stress and wear of the conductor due to vibration, and significantly improve the vibration resistance of the conductor.

[0013] Optionally, the fastener comprises a fastening bolt, a first fastening nut and a second fastening nut, the fastening bolt penetrates the wire clamp body and the wire clamp cover at the end, and is threadedly connected with the first fastening nut and the second fastening nut in sequence.

[0014] By adopting the technical scheme, the first fastening nut and the second fastening nut are used to simultaneously fix the fastening bolt, which can reduce stress concentration of the fastening bolt under alternating load, thereby reducing the fatigue risk, and in a vibration environment, the double-nut design can better prevent the bolt from slipping or rotating due to external force, improve the reliability of the connection between the wire clamp body and the wire clamp cover, and improve the safety performance of the vibration-proof device.

[0015] Optionally, two limiting blocks are mounted on the wire clamp body, and the fastening bolt is clamped with the two limiting blocks.

[0016] By adopting the technical scheme, the two limiting blocks are tightly fitted with the bolt head side of the fastening bolt, which effectively prevents the fastening bolt from rotating by itself in a vibration environment, thereby avoiding loosening of the fastening bolt caused by vibration, and improving the stability and reliability of the connection between the fastening bolt and the wire clamp body.

[0017] Optionally, the wire clamp body comprises a fixing member and a connecting member, a rotating shaft is rotatably connected to the end of the fixing member, one end of the connecting member is rotatably connected to the fixing member through the rotating shaft, and the other end is connected to the end of the fixing member away from the rotating shaft.

[0018] By adopting the technical scheme, the rotatable connection of the fixing member and the connecting member can realize quick disassembly and assembly of the steel strand, facilitate adjustment of the position of the wire clamp body on the steel strand, and improve the maintenance efficiency of the wire clamp assembly.

[0019] Optionally, a wedge-shaped slot is formed on the end of the fixing member away from the rotating shaft, and a button locking member is installed on the end of the connecting member away from the rotating shaft, and the button locking member is wedged and clamped with the wedge-shaped slot.

[0020] By adopting the above technical scheme, the structure that the button locking member is wedged and clamped with the wedge-shaped slot can quickly fix the connecting member on the fixing member without too many operation steps for disassembly, so that the steel strand can be quickly replaced when it is damaged, and the operation is convenient and fast.

[0021] Optionally, the button locking member comprises a shell, a spring, a pressing rod and a steel ball, the pressing rod penetrates the shell in the axial direction of the shell, the spring is sleeved on the outer circumferential side wall of the pressing rod, a tapered slot is formed on the pressing rod in the circumferential direction, and the length of the tapered slot perpendicular to the axial direction of the pressing rod is greater than the outer circumferential diameter of the steel ball, a steel ball hole is formed on the shell and communicates with the tapered slot, the diameter of the steel ball hole is smaller than the outer circumferential diameter of the steel ball, and the steel ball is wedged and clamped with the wedge-shaped slot.

[0022] By adopting the above technical scheme, after pressing the pressing rod, the steel ball will roll into the cavity formed by the tapered slot and the shell, at this time, the button locking member can be pulled out along the axial direction of the wedge-shaped slot; after releasing the pressing rod, the elastic potential energy of the compressed spring drives the pressing rod to extrude the steel ball, part of the cross section of the steel ball will be exposed from the steel ball hole, and then the steel ball is wedged and clamped with the wedge-shaped slot, so that the connecting member is more conveniently fixed on the fixing member, and too many tools are not needed, thereby improving the convenience.

[0023] Optionally, a fixing hole is formed on the wire clamp body, the steel strand passes through the fixing hole, and a positioning sleeve is fixed on the middle part of the steel strand and has the same length as the fixing hole in the axial direction.

[0024] By adopting the above technical scheme, when the steel strand is installed, the positioning sleeve can assist the positioning of the steel strand in the fixing hole, ensure that the middle part of the steel strand is fixed in the fixing hole, make the two ends of the steel strand more symmetrical, and ensure that the anti-vibration device can achieve better damping effect.

[0025] In summary, the present application has at least the following beneficial effects:

[0026] 1. The wire clamp body and the wire clamp cover are hinged through a hinge shaft, the rubber pad in the wire clamping cavity increases the friction between the wire and the wire clamp, and a double positioning structure is adopted, so that the wire clamp assembly is reliably installed and is not easy to slide axially.

[0027] 2. The design that the outer circumferential diameter of the end part of the rubber pad is greater than the outer circumferential diameter of the middle part of the rubber pad increases the contact area between the rubber pad and the wire, thereby improving the friction, preventing the anti-vibration device from slipping under the action of wind and other external forces, improving the stability and reliability of the anti-vibration device, and ensuring the safe operation of the power transmission line.

[0028] 3. The fixed part and the fixed cover are connected through the rotating shaft, so that the steel strand can be quickly replaced and maintained when the steel strand is damaged, and the maintenance efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic diagram of a first embodiment of a twisted multi-frequency anti-vibration hammer;

[0030] Figure 2 It is a cross-sectional view of the first embodiment shown in the figure. Figure 1

[0031] Figure 3 It is an exploded schematic diagram of the first embodiment shown in the figure. Figure 1 Figure 1

[0032] Figure 4 It is an exploded schematic diagram of the first embodiment shown in the figure. Figure 1 Figure 2

[0033] Figure 5 It is an exploded schematic diagram of a second embodiment of a twisted multi-frequency anti-vibration hammer.

[0034] Figure 6 It is a cross-sectional schematic diagram of the second embodiment shown in the figure. Figure 5

[0035] It is a cross-sectional view of the button locking part. Figure 7

[0036] Reference signs: 1, wire clamp assembly; 11, wire clamp body; 111, connecting part; 112, fixed part; 1121, fixed hole; 113, limiting block; 114, fixed part; 1141, wedge-shaped groove; 115, connecting part; 116, rotating shaft; 117, button locking part; 1171, shell; 1171-1, steel ball hole; 1172, spring; 1173, pressing rod; 1173-1, conical groove; 1174 steel ball; 12, wire clamp cover; 13, hinged shaft; 14, wire clamping cavity; 2, steel strand; 21, positioning sleeve; 3, hammer head; 4, fastening part; 41, fastening bolt; 42, first fastening nut; 43, second fastening nut; 44, round gasket; 5, rubber pad; 6, pre-twisted wire protection strip. DETAILED DESCRIPTION

[0037] The following will be further described in detail in conjunction with the drawings of the specification:

[0038] Example 1

[0039] As shown in the accompanying drawings Figure 1 ​​​​​​As shown, a kind of twisted multi-frequency anti-vibration hammer, including wire clamp assembly 1, steel strand 2, hammer head 3 and fastener 4.

[0040] Wire clamp assembly 1 includes wire clamp body 11 and wire clamp gland 12, wire clamp body 11 includes connecting portion 111 and fixed portion 112, fixed hole 1121 is opened on the end of fixed portion 112, steel strand 2 is installed in fixed hole 1121, two hammer heads 3 are installed at the two ends of steel strand 2, two hammer heads 3 are tuning fork type hammer heads 3 here, tuning fork type hammer head 3 is prior art product in the art, not described too much here.

[0041] As shown in the accompanying Figure 2 And as shown in the accompanying Figure 3 Connecting portion 111 is fixedly connected with fixed portion 112, hinged shaft 13 is installed on the end of connecting portion 111, and hinged shaft 13 is rotatably connected with connecting portion 111.

[0042] One end of wire clamp gland 12 is hinged with wire clamp body 11 through hinged shaft 13, and the other end is connected with wire clamp body 11 through fastener 4.

[0043] Wire clamp body 11 and wire clamp gland 12 are both concave, and the two concaves of wire clamp body 11 and wire clamp gland 12 are both semicircular, and the two concaves are communicated to form wire clamping cavity 14 after wire clamp body 11 is connected with wire clamp gland 12.

[0044] Rubber pad 5 is installed in wire clamping cavity 14, rubber pad 5 is made of high-quality synthetic rubber and the like, the number of rubber pad 5 is two, and the two rubber pads 5 are both semicircular, the semicircular design makes rubber pad 5 better fit the shape of the wire and wire clamp assembly 1 during installation, thereby improving the stability and reliability of the entire system, and the outer diameter of the end of rubber pad 5 is greater than the outer diameter of the middle of rubber pad 5, thereby increasing the contact area between rubber pad 5 and the wire, thereby improving the friction, preventing the anti-vibration device from slipping under the action of wind and other external forces, and improving the stability and reliability of the anti-vibration device.

[0045] Pre-twisted wire protector 6 is installed between rubber pad 5 and wire clamp assembly 1, pre-twisted wire protector 6 passes through wire clamping cavity 14, and pre-twisted wire protector 6 is wound on the outer wall of rubber pad 5, pre-twisted wire protector 6 is spiral, and is made of aluminum-coated steel wire or high-strength aluminum alloy wire and the like, and the two ends of pre-twisted wire protector 6 are designed in circular arc, which can effectively prevent corona.

[0046] As shown in the accompanying Figure 4 Fastener 4 includes fastening bolt 41, first fastening nut 42 and second fastening nut 43.

[0047] The bolt rod of the fastening bolt 41 passes through the wire clamp body 11 and the wire clamp cover 12 in sequence, and the end is provided with a round gasket 44, a first fastening nut 42 and a second fastening nut 43 in sequence, which can better play the anti-loosening role during the installation and adjustment of the anti-vibration device, and improves the safety performance of the anti-vibration device during installation.

[0048] The wire clamp body 11 is fixed with two limiting blocks 113 on the side away from the wire clamp cover 12, and the two limiting blocks 113 are located on both sides of the bolt head of the fastening bolt 41, and the two limiting blocks 113 are connected with the bolt head of the fastening bolt 41, which prevents the fastening bolt 41 from rotating by itself in the vibration environment, thereby avoiding loosening of the fastening bolt 41 due to vibration.

[0049] The advantage of the embodiment one is that:

[0050] The design that the outer diameter of the end of the rubber pad 5 is greater than the outer diameter of the middle part of the rubber pad 5 increases the contact area between the rubber pad 5 and the wire, thereby improving the friction force, preventing the anti-vibration device from slipping under the action of wind and other external forces, improving the stability and reliability of the anti-vibration device, and ensuring the safe operation of the power transmission line.

[0051] Embodiment two:

[0052] As shown in Figs. 1 and 2, the embodiment two is improved on the basis of the embodiment one, and other technical features are the same as those of the embodiment one, which will not be described here. Figure 5 Figure 6 As shown in Figs. 1 and 2, the embodiment two is improved on the basis of the embodiment one, and other technical features are the same as those of the embodiment one, which will not be described here.

[0053] The middle part of the steel strand 2 is fixed with a positioning sleeve 21, and the length of the positioning sleeve in the axial direction is equal to that of the fixing hole 1121. When the steel strand 2 is installed, the positioning sleeve 21 can assist the positioning of the steel strand 2 in the fixing hole 1121, ensure that the middle part of the steel strand 2 is fixed in the fixing hole 1121, make the two ends of the steel strand 2 more symmetrical, and ensure that the anti-vibration device can achieve better vibration reduction effect.

[0054] The wire clamp body 11 includes a fixing part 114 and a connecting part 115. The fixing part 114 is C-shaped, one end of the fixing part 114 is fixedly connected with the connecting part 111, and the other end is rotatably connected with a rotating shaft 116. The connecting part 115 is C-shaped, one end of the connecting part 115 is rotatably connected with the fixing part 114 through the rotating shaft 116, and the other end is provided with a button locking part 117.

[0055] As shown in Figs. 1 and 2, the embodiment two is improved on the basis of the embodiment one, and other technical features are the same as those of the embodiment one, which will not be described here. Figure 6 Figure 7 ​​As shown, the fixing member 114 is provided with a wedge-shaped slot 1141 at one end away from the rotating shaft 116, and the button locking member 117 includes a cylindrical shell 1171, a spring 1172, a pressing rod 1173 and a steel ball 1174.

[0056] The pressing rod 1173 is provided with a tapered slot 1173-1 at one end in the circumferential direction, and the length of the tapered slot 1173-1 in the direction perpendicular to the axial direction of the pressing rod 1173 is greater than the outer diameter of the steel ball 1174. The tapered slot 1173-1 is connected with the inside of the shell 1171 to form a chamber for the steel ball 1174 to move. The shell 1171 is provided with two steel ball holes 1171-1, and the outer diameter of the steel ball hole 1171-1 is smaller than the outer diameter of the steel ball 1174. The opening direction of the steel ball hole 1171-1 is perpendicular to the axial direction of the pressing rod 1173, and the steel ball hole 1171-1 is connected with the tapered slot 1173-1. The number of the steel balls 1174 is two, and one side of the two steel balls 1174 is located in the tapered slot 1173-1, and the other side is located in the two steel ball holes 1171-1, respectively.

[0057] After pressing the pressing rod 1173, the pressing rod compresses the spring to store elastic potential energy, and the steel ball 1174 rolls into the chamber formed by the tapered slot 1173-1 and the inside of the shell 1171. After releasing the pressing rod 1173, the elastic potential energy of the spring 1172 will pop out the pressing rod 1173, and the pressing rod 1173 will extrude the steel ball 1174, and part of the cross section of the steel ball 1174 will be exposed outside the steel ball hole 1171-1.

[0058] The button locking member 117 is connected with the wedge-shaped slot 1141. When the fixing member 114 and the connecting member 115 are fixed, the steel ball 1174 is exposed from the steel ball hole 1171-1 to be connected with the wedge-shaped slot 1141 to fix the connecting member 115. When the steel strand 2 is disassembled, the pressing rod 1173 is pressed, and the steel ball 1174 is no longer exposed from the steel ball hole 1171-1, and the steel ball 1174 returns to the chamber formed by the tapered slot 1173-1 and the inside of the shell 1171, so as to realize the quick fixing and unlocking between the connecting member 115 and the fixing member 114.

[0059] The advantages of the second embodiment are:

[0060] The structure that the button locking piece 117 is wedged and clamped with the wedge-shaped groove 1141 can quickly fix the connecting piece 115, does not need too many operation steps to disassemble and assemble, and is convenient for quickly replacing the steel strand 2 when the steel strand 2 is damaged.

[0061] In summary:

[0062] The structure that the wire clamp body 11 is hinged with the wire clamp cover 12 and the waist drum-shaped rubber pad 5 can avoid the anti-vibration device from slipping in the wire axial direction, improve the stability and reliability of the anti-vibration device, ensure the safe operation of the power transmission line, and the fixing part 112 can facilitate quick replacement of the steel strand 2 when the steel strand 2 is damaged, and the operation is convenient and fast.

[0063] The specific embodiment is merely an explanation of the application, and is not a limitation of the application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the application, they are protected by the patent law.

Claims

1. A twisted multi-frequency anti-vibration hammer, comprising a wire clamp assembly (1), a steel strand (2) is connected to the wire clamp assembly (1), and hammer heads (3) are fixed at both ends of the steel strand (2), characterized in that, The cable clamp assembly (1) further comprises a rubber pad (5) and a pre-stranded wire covering strip (6), the rubber pad (5) is sleeved on the outer side of the electric wire, the outer diameter of the end of the rubber pad (5) is larger than the outer diameter of the middle part of the rubber pad (5), the pre-stranded wire covering strip (6) is wrapped on the outer side of the rubber pad (5), and the two ends of the pre-stranded wire covering strip (6) are wound and fixed on the outer side of the electric wire.

2. A twisted multi-frequency anti-chopping hammer according to claim 1, characterized in that, The cable clamp assembly (1) further comprises a fastener (4), the cable clamp assembly (1) comprises a clamp body (11) and a clamp cover (12), the clamp body (11) is provided with a hinge shaft (13) at the end away from the steel strand (2), one end of the clamp cover (12) is hinged to the clamp body (11) through the hinge shaft (13), and the other end is connected to the clamp body (11) through the fastener (4).

3. The twisted multi-frequency anti-chopping hammer according to claim 1, characterized in that, The pre-stranded wire covering strip (6) is in a spiral shape.

4. The twisted multi-frequency anti-chopping hammer according to claim 2, characterized in that, The fastener (4) comprises a fastening bolt (41), a first fastening nut (42) and a second fastening nut (43), the end of the fastening bolt (41) penetrates the clamp body (11) and the clamp cover (12) in sequence, and is threadedly connected to the first fastening nut (42) and the second fastening nut (43) in sequence.

5. A twisted multiple frequency anti-chopping hammer according to claim 4, characterized in that, The clamp body (11) is provided with two limiting blocks (113), and the fastening bolt (41) is clamped with the two limiting blocks (113).

6. A twisted multiple frequency anti-chopping hammer according to claim 2, characterized in that, The clamp body (11) comprises a fixing member (114) and a connecting member (115), the end of the fixing member (114) is rotatably connected with a rotating shaft (116), one end of the connecting member (115) is rotatably connected with the fixing member (114) through the rotating shaft (116), and the other end is connected with the end of the fixing member (114) away from the rotating shaft (116).

7. A twisted multiple frequency anti-chopping hammer according to claim 6, characterized in that, The end of the fixing member (114) away from the rotating shaft (116) is provided with a wedge-shaped groove (1141), the end of the connecting member (115) away from the rotating shaft (116) is provided with a button locking member (117), and the button locking member (117) is clamped with the wedge-shaped groove (1141).

8. A twisted multiple frequency anti-chopping hammer according to claim 7, characterized in that, The button locking member (117) comprises a shell (1171), a spring (1172), a pressing rod (1173) and a steel ball (1174), the pressing rod (1173) penetrates the shell (1171) in the axial direction of the shell (1171), the spring (1172) is sleeved on the outer peripheral side wall of the pressing rod (1173), the pressing rod (1173) is provided with a tapered groove (1173-1) in the circumferential direction, the length of the tapered groove (1173-1) in the axial direction of the pressing rod (1173) is greater than the outer diameter of the steel ball (1174), the shell (1171) is provided with a steel ball hole (1171-1) communicating with the tapered groove (1173-1), the diameter of the steel ball hole (1171-1) is smaller than the outer diameter of the steel ball (1174), and the steel ball (1174) is clamped with the wedge-shaped groove (1141).

9. The twisted multi-frequency anti-chopping hammer according to claim 2, characterized in that, The wire clamp body (11) is provided with a fixing hole (1121), the steel strand (2) passes through the fixing hole (1121), the middle part of the steel strand (2) is fixed with a positioning sleeve (21), and the positioning sleeve (21) is equal in length to the fixing hole (1121) in the axial direction.

Images