Electric shockproof hammer

Abstract

The utility model relates to an electric power stockbridge damper, and relates to the technical field of power transmission line protection, the electric power stockbridge damper comprises a wire clamp part, a hammerhead part and a connecting part, the wire clamp part is composed of a fixed wire duct plate, a movable wire duct plate and a locking mechanism, the fixed wire duct plate and the movable wire duct plate are hinged to each other, and the locking mechanism locks the end, away from the hinged end, of the movable wire duct plate; a ratchet groove is formed in the movable trunking plate, and the locking mechanism comprises a locking block which is rotationally arranged on the fixed trunking plate and is provided with a ratchet wheel which is clamped and matched with the ratchet groove; the torsion spring pushes the locking block to be close to the movable trunking plate and is clamped and matched with the ratchet groove; and the unlocking assembly pushes the locking block to be far away from the movable wire slot plate. According to the anti-vibration hammer, the movable wire duct plate is pressed to be close to the fixed wire duct plate, the ratchet grooves in the movable wire duct plate and the ratchet wheels on the locking blocks are clamped and matched with each other, the anti-vibration hammer is finally locked on the power cable, and the probability that the anti-vibration hammer is loosened in the using process is reduced.

Description

Technical Field

[0001] This application relates to the technical field of transmission line protection, and in particular to a power shock absorber hammer. Background Art

[0002] The span of high-voltage overhead lines is relatively large, and the towers are also relatively high. When the power cable is blown by strong wind, it will vibrate strongly. When the power cable vibrates, the working conditions at the suspension point of the power cable are the most unfavorable. Long-term and periodic vibrations will cause fatigue damage to the power cable, resulting in broken strands and broken wires of the power cable. Sometimes strong vibrations will also damage the fittings and insulators. To prevent and reduce the vibration of the power cable, a certain number of shock absorber hammers are generally installed near the cable clamp for suspending the power cable. When the power cable vibrates, the shock absorber hammer also moves up and down. Generating a force that is out of sync or even opposite to the vibration of the power cable can reduce the amplitude of the power cable vibration and even eliminate the vibration of the power cable.

[0003] However, since the installation position of the shock absorber hammer is at a certain distance from the power tower where the staff is located, the staff needs to leave the power tower to install the shock absorber hammer during installation. Currently, the traditional shock absorber hammer is firmly connected to the power cable through a bolt structure. To fixedly install the shock absorber hammer on the power cable, the bolts need to be tightened. However, during long-term use, due to the frequent vibration of the shock absorber hammer, the bolts are likely to become loose, causing the shock absorber hammer to slip on the power cable and affecting the shock absorption effect of the shock absorber hammer. Summary of the Utility Model

[0004] In order to reduce the probability of loosening of the shock absorber hammer during use, this application provides a power shock absorber hammer.

[0005] A power shock absorber hammer provided by this application adopts the following technical solutions:

[0006] A power shock absorber hammer includes a clamp part clamped and fixed on the power cable, a hammer head part for reducing the vibration of the power cable, and a connection part for connecting the clamp part and the hammer head part. The clamp part is composed of a fixed wire groove plate, a movable wire groove plate and a locking mechanism. One end of the fixed wire groove plate and the movable wire groove plate is hinged to each other and clamps and fixes both sides of the power cable. The locking mechanism is arranged on one side of the fixed wire groove plate away from the hinged position and locks the end of the movable wire groove plate away from the hinge. A plurality of ratchet grooves are arranged at intervals on the movable wire groove plate. The locking mechanism includes:

[0007] A locking block, the locking block is rotatably arranged on the fixed wire groove plate, and a ratchet gear engaged with the ratchet groove is arranged on the locking block;

[0008] A torsion spring, which is arranged on a fixed wire groove plate, and both ends of the torsion spring respectively abut against the opposite side walls of the fixed wire groove plate and the locking block. The torsion spring is used to push the locking block close to the movable wire groove plate and engage with the ratchet groove;

[0009] An unlocking assembly, which is arranged on the fixed wire groove plate and is used to push the locking block away from the movable wire groove plate.

[0010] By adopting the above technical solutions, the size of the hammer head part is determined in advance and a suitable hammer head part is selected and fixedly installed on the connecting part. Then, after the installation is completed, the shock-absorbing hammer is carried onto the power tower. The staff on the power tower only needs to press the unlocking rod to unlock the movable wire groove plate, and then place the power cable between the fixed wire groove plate and the movable wire groove plate. Release the unlocking rod, press the movable wire groove plate to move closer to the fixed wire groove plate. Through the engagement between the ratchet groove on the movable wire groove plate and the ratchet gear on the locking block, the distance between the movable wire groove plate and the fixed wire groove plate can only approach each other, and finally it is locked on the power cable, reducing the probability of loosening of the shock-absorbing hammer during use.

[0011] Furthermore, the unlocking assembly includes:

[0012] An unlocking rod, which is slidably arranged on the fixed wire groove plate. The unlocking rod abuts against the side of the locking block close to the movable wire groove plate and pushes the locking block away from the movable wire groove plate;

[0013] A compression spring, which is sleeved on the unlocking rod and abuts against the fixed wire groove plate. The compression spring is used to push the unlocking rod away from the locking block.

[0014] By adopting the above technical solutions, when the unlocking rod is pushed towards the locking block, the unlocking rod pushes the locking block away from the movable wire groove plate, so that the ratchet gear and the ratchet groove are separated from each other, thereby facilitating the rotation of the movable wire groove plate away from the fixed wire groove plate. When the unlocking rod is released, the compression spring pushes the unlocking rod away from the locking block, thereby unlocking the locking block.

[0015] Furthermore, both the fixed wire groove plate and the movable wire groove plate are provided with clamping grooves for clamping the power cable on the side close to the power cable. A rubber pad that abuts against the power cable is arranged in the clamping groove.

[0016] By adopting the above technical solutions, the rubber pad is fixedly installed in the clamping groove. The fixed wire groove plate and the movable wire groove plate abut against the power line through the rubber pad, which is convenient for clamping and fixing the power cable and improves the fixing effect of the fixed wire groove plate and the movable wire groove plate on the power cable.

[0017] Further, a plurality of protrusions are spaced apart on one side of the rubber pad close to the power cable, and the plurality of protrusions facilitate the fixing and clamping of the power cable.

[0018] By adopting the above technical solution, since the outer surface of the power cable is a non-smooth contact surface, a plurality of protrusions are spaced apart on the rubber pad, which facilitates the fixing and clamping of the power cable and improves the clamping effect of the rubber pad on the power cable.

[0019] Further, the connecting part is a connecting block arranged on the fixed wire groove plate, and the hammer head part is composed of a connecting rod and a gravity hammer. The two ends of the connecting rod are respectively connected to the gravity hammer and the side wall close to the bottom of the connecting block. There are two groups of the connecting rod and the gravity hammer, and they are respectively located on the opposite side walls close to the bottom of the connecting block.

[0020] By adopting the above technical solution, the connecting block fixedly connects the hammer head part to the fixed wire groove plate. The two groups of gravity hammers are respectively installed on the opposite side walls of the connecting block through the two groups of connecting rods. When the power cable vibrates, the gravity hammers also move up and down, generating a force that is out of sync or even opposite to the vibration of the power cable, which can reduce the amplitude of the power cable vibration and even eliminate the vibration of the power cable.

[0021] Further, an external thread is provided on one side of the connecting rod close to the connecting block. The connecting rod is threadedly connected to the connecting block, and a fixing nut is threadedly installed on the connecting rod. The fixing nut is threadedly connected to the connecting rod and abuts against the side wall of the connecting block.

[0022] By adopting the above technical solution, the connecting rod is threadedly connected to the connecting block, so that the shockproof hammer can calculate the required size of the gravity hammer and the length of the connecting rod according to the installation position, and install the suitable connecting rod and gravity hammer on the connecting block. After the connecting rod is installed, tighten the fixing nut to abut against the connecting block to improve the connection stability between the connecting rod and the connecting block.

[0023] Further, an annular fixing groove is formed on the side wall of the connecting rod close to the connecting block, and a fixing component for locking the two groups of connecting rods is arranged on the connecting block. The fixing component includes:

[0024] A plug block, the plug block is slidably arranged on the connecting block, and two groups of fixing rods are arranged at one end of the plug block close to the connecting rod. When the plug block moves down, the two groups of fixing rods are respectively inserted into the fixing grooves of the two groups of connecting rods;

[0025] A locking bolt, the locking bolt passes through the plug block and is threadedly connected to the connecting plate.

[0026] By adopting the above technical solution, after the two groups of connecting rods are installed, the insertion block is slid downward and the two fixing rods are respectively inserted into the fixing grooves of the two groups of connecting rods, and the locking bolts are tightened to fix the insertion block on the connecting block, so as to prevent the two groups of connecting rods from moving along the axis direction of the connecting rods, and improve the stability of the connecting rods and the connecting block.

[0027] Furthermore, protective layers are provided on the fixed wire groove plate, the movable wire groove plate and the gravity hammer, and the protective layers are used to prevent the environment from corroding the fixed wire groove plate, the movable wire groove plate and the gravity hammer.

[0028] By adopting the above technical solution, since the shock-absorbing hammer is in direct contact with the external environment for a long time, the protective layer is used to prevent the environment from corroding the fixed wire groove plate, the movable wire groove plate and the gravity hammer, and the service life of the fixed wire groove plate, the movable wire groove plate and the gravity hammer is improved through the protective layer.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] By determining the size of the hammer head part in advance and selecting a suitable hammer head part to be fixedly installed on the connecting plate, and then putting the shock-absorbing hammer after the gravity hammer is installed on the power tower, the staff only needs to press the unlocking rod on the power tower to unlock the movable wire groove plate, and then place the power cable between the fixed wire groove plate and the movable wire groove plate, release the unlocking rod, press the movable wire groove plate to approach the fixed wire groove plate, and through the engagement of the ratchet groove on the movable wire groove plate and the ratchet gear on the locking block, the distance between the movable wire groove plate and the fixed wire groove plate can only approach each other, and finally lock on the power cable, reducing the probability of the shock-absorbing hammer loosening during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the shock-absorbing hammer of the present application;

[0032] Figure 2 is a schematic structural diagram of the shock-absorbing hammer of the present application, with the rubber pad removed;

[0033] Figure 3 is Figure 1 the sectional view taken along line A-A in

[0034] Figure 4 is Figure 2 the sectional view taken along line B-B in

[0035] Figure 5 is Figure 4 the enlarged view of part C in

[0036] Reference signs: 1, clamp part; 2, connection part; 21, connection block; 22, fixing component; 221, insertion block; 222, fixing rod; 223, locking bolt; 3, hammer head part; 31, connecting rod; 311, fixing groove; 32, gravity hammer; 33, fixing nut; 4, fixed wire groove plate; 41, clamping groove; 42, rubber pad; 421, protrusion; 43, locking groove; 5, movable wire groove plate; 51, ratchet groove; 6, locking mechanism; 61, locking block; 611, ratchet gear; 62, torsion spring; 63, unlocking component; 631, unlocking rod; 632, compression spring. Detailed implementation mode

[0037] The following further describes the present application in detail with reference to the Figures 1 - 5 accompanying drawings.

[0038] An embodiment of the present application discloses a power shock absorber.

[0039] Referring to Figure 1 , a power shock absorber includes a clamp part 1 clamped and fixed on a power cable, a hammer head part 3 for reducing the vibration of the power cable, and a connection part 2 for connecting the clamp part 1 and the hammer head part 3. It is characterized in that: the clamp part 1 is composed of a fixed wire groove plate 4, a movable wire groove plate 5 and a locking mechanism 6. One end of the fixed wire groove plate 4 and the movable wire groove plate 5 is hinged to each other and clamps and fixes both sides of the power cable. The locking mechanism 6 is arranged on one side of the fixed wire groove plate 4 away from the hinged position and locks the end of the movable wire groove plate 5 away from the hinged end. A plurality of ratchet grooves 51 are arranged at intervals on the movable wire groove plate 5.

[0040] Referring to Figure 1 and Figure 2 , one end of the fixed wire groove plate 4 and the movable wire groove plate 5 is hinged and installed. The outer side wall of the cross-section of the fixed wire groove plate 4 is an arc structure. A semi-circular clamping groove 41 is opened on the side of the fixed wire groove plate 4 close to the power cable. The clamping groove 41 is convenient for clamping the power cable; a semi-circular clamping groove 41 is also opened on the side of the movable wire groove plate 5 close to the power cable. The clamping groove 41 is convenient for clamping the power cable; a layer of rubber pad 42 is fixedly installed on the inner side walls of the fixed wire groove plate 4 and the movable wire groove plate 5. The fixed wire groove plate 4 and the movable wire groove plate 5 are in contact with the power cable through the rubber pad 42; since the outer surface of the power cable is a non-smooth contact surface, in order to improve the clamping effect of the rubber pad 42 on the power cable, a plurality of protrusions 421 are installed at intervals on the side of the rubber pad 42 close to the power cable. The plurality of protrusions 421 are convenient for fixedly clamping the power cable; a locking groove is opened at one end of the fixed wire groove plate 4 away from the hinge. One end of the movable wire groove plate 5 close to the locking groove can be clamped in the locking groove, and the power cable is clamped and fixed thereby.

[0041] Referring to Figure 1 andFigure 3 The locking mechanism 6 includes a locking block 61, a torsion spring 62 and an unlocking assembly 63. A locking groove 43 is formed at one end of the fixed wire groove plate 4 away from the hinge. The locking block 61 is rotatably mounted on the fixed wire groove plate 4 and is located in the locking groove 43. A ratchet gear 611 is fixedly installed at one end of the locking block 61 close to the movable wire groove plate 5, and the ratchet gear 611 is engaged with the ratchet tooth groove 51; the torsion spring 62 is fixedly installed in the locking groove 43, and both ends of the torsion spring 62 are respectively pressed against the opposite side walls of the locking groove 43 and the locking block 61. The torsion spring 62 is used to push the locking block 61 close to the movable wire groove plate 5 and engage with the ratchet tooth groove 51; when the movable wire groove plate 5 rotates towards the fixed wire groove plate 4, the ratchet tooth groove 51 pushes the ratchet gear 611 and causes the locking block 61 to press against the torsion spring 62. When the movable wire groove plate 5 stops rotating, the torsion spring 62 pushes the locking block 61 to make the ratchet gear 611 clamped in the ratchet tooth groove 51, so that the movable wire groove plate 5 is locked; when the movable wire groove plate 5 rotates away from the fixed wire groove plate 4, the ratchet gear 611 is engaged with the ratchet tooth groove 51 and prevents the movable wire groove plate 5 from rotating away from the fixed wire groove plate 4, so as to form self-locking of the movable wire groove plate 5.

[0042] Refer to Figure 3 The unlocking assembly 63 includes an unlocking rod 631 and a compression spring 632. The unlocking rod 631 is slidably mounted on the fixed wire groove plate 4. The unlocking rod 631 abuts against the side of the locking block 61 close to the movable wire groove plate 5. When the unlocking rod 631 is pushed towards the locking block 61, the unlocking rod 631 pushes the locking block 61 away from the movable wire groove plate 5, so that the ratchet gear 611 and the ratchet tooth groove 51 are separated from each other, so as to facilitate the rotation of the movable wire groove plate 5 away from the fixed wire groove plate 4; the compression spring 632 is sleeved on the unlocking rod 631, and both sides of the compression spring 632 are respectively pressed against the side of the unlocking rod 631 away from the locking block 61 and the fixed wire groove plate 4. The compression spring 632 is used to push the unlocking rod 631 away from the locking block 61.

[0043] Refer to Figure 1 and Figure 4, the connecting part 2 is a connecting block 21 fixedly installed on the fixed wire trough plate 4. The hammer head part 3 is composed of a connecting rod 31 and a gravity hammer 32. The two ends of the connecting rod 31 are respectively connected to the gravity hammer 32 and the side wall near the bottom of the connecting block 21. There are two groups of connecting rods 31 and gravity hammers 32, which are respectively located on the opposite side walls near the bottom of the connecting block 21, and the two groups of connecting rods 31 and gravity hammers 32 are symmetrically arranged with respect to the connecting block 21. When the power cable vibrates, the gravity hammer 32 also moves up and down, generating a force that is out of sync or even opposite to the vibration of the power cable, which can reduce the amplitude of the power cable vibration and even eliminate the vibration of the power cable. An external thread is provided on the side of the connecting rod 31 close to the connecting block 21. The connecting rod 31 is threadedly connected to the connecting block 21, and a fixing nut 33 is threadedly connected to the connecting rod 31. When the connecting rod 31 is locked on the connecting block 21, the fixing bolt is screwed to make the fixing nut 33 abut against the connecting block 21, so as to lock the connecting rod 31 on the connecting block 21.

[0044] Refer to Figure 4 and Figure 5 , the gravity hammer 32 swings as the power cable swings, so the locking of the gravity hammer 32 is particularly important. An annular fixing groove 311 is provided on the side wall of the connecting rod 31 close to the connecting block 21, and a fixing component 22 for locking the two groups of connecting rods 31 is provided on the connecting block 21. The fixing component 22 includes an insertion block 221 and a locking bolt 223. The insertion block 221 is slidably installed on the connecting block 21. Two fixing rods 222 are fixedly installed at one end of the insertion block 221 close to the connecting rod 31. When the insertion block 221 moves down, the two fixing rods 222 are respectively inserted into the fixing grooves 311 of the two groups of connecting rods 31 to block the two groups of connecting rods 31 from moving along the axis direction of the connecting rod 31. When the insertion block 221 slides to the lowest end, the locking bolt 223 passes through the insertion block 221 and is threadedly connected to the connecting block 21 to lock and fix the insertion block 221. Since the shock-proof hammer is in direct contact with the external environment for a long time, in order to improve the service life of the shock-proof hammer, a protective layer is provided on the fixed wire trough plate 4, the movable wire trough plate 5 and the gravity hammer 32. The protective layer is used to prevent the environment from corroding the fixed wire trough plate 4, the movable wire trough plate 5 and the gravity hammer 32, and the service life of the fixed wire trough plate 4, the movable wire trough plate 5 and the gravity hammer 32 is improved through the protective layer. The protective layer in this embodiment is a paint layer evenly applied on the fixed wire trough plate 4, the movable wire trough plate 5 and the gravity hammer 32.

[0045] Refer to Figure 1 and Figure 3, before use, calculate the size of the gravity hammer 32 and the length of the connecting rod 31 according to the installation position of the shock-proof hammer. Then, thread-mount the gravity hammer 32 of the required size and the connecting rod 31 on the connecting block 21 on the ground. Turn the fixing nut 33 to press tightly against the side wall of the connecting block 21. Slide the insertion block 221 downward and insert the two fixing rods 222 into the fixing grooves 311 of the two connecting rods 31 respectively. Lock the locking bolt 223 to fix the insertion block 221 on the connecting block 21. Then, the staff takes the installed shock-proof hammer onto the power tower. During installation, the staff presses the unlocking rod 631 to make the movable wire groove plate 5 rotatable freely, and separates the movable wire groove plate 5 and the fixed wire groove plate 4 away from the hinge. Release the unlocking rod 631. The unlocking rod 631 moves away from the locking rod under the action of the compression spring 632. Then, place the power cable into the fixed wire groove plate 4, and rotate the movable wire groove plate 5 to clamp the power cable. At the same time, the ratchet groove 51 on the movable wire groove plate 5 engages with the ratchet gear 611 on the locking block 61, so that the distance between the movable wire groove plate 5 and the fixed wire groove plate 4 can only approach each other, and finally lock it on the power cable. The rubber pad 42 improves the fixing effect of the fixed wire groove plate 4 and the movable wire groove plate 5 on the power cable. This process only needs to press the movable wire groove plate 5 to approach the fixed wire groove plate 4, making the installation process relatively simple and the locking effect good, so as to facilitate the installation of the shock-proof hammer.

[0046] The working principle of the embodiment of the present application is as follows:

[0047] By determining the size of the hammer head part 3 in advance and selecting a suitable hammer head part 3 to be fixedly installed on the connecting plate, and then taking the shock-proof hammer after the gravity hammer 32 is installed onto the power tower. The staff on the power tower only needs to press the unlocking rod 631 to unlock the movable wire groove plate 5, then place the power cable between the fixed wire groove plate 4 and the movable wire groove plate 5, release the unlocking rod 631, and press the movable wire groove plate 5 to approach the fixed wire groove plate 4. Through the engagement of the ratchet groove 51 on the movable wire groove plate 5 and the ratchet gear 611 on the locking block 61, the distance between the movable wire groove plate 5 and the fixed wire groove plate 4 can only approach each other, and finally lock it on the power cable, reducing the probability of loosening of the shock-proof hammer during use.

[0048] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electric shock-proof hammer, comprising a wire clamp portion (1) clamped and fixed on an electric power cable, a hammer head portion (3) for reducing vibration of the electric power cable, and a connecting portion (2) for connecting the wire clamp portion (1) and the hammer head portion (3), characterized in that: The wire clamp part (1) is composed of a fixed wire trough plate (4), a movable wire trough plate (5) and a locking mechanism (6); one end of the fixed wire trough plate (4) and the movable wire trough plate (5) are hinged to each other and clamp and fix both sides of the power cable; the locking mechanism (6) is arranged on a side of the fixed wire trough plate (4) away from the hinge position and locks the end of the movable wire trough plate (5) away from the hinge; a plurality of ratchet grooves (51) are arranged at intervals on the movable wire trough plate (5); the locking mechanism (6) comprises: A locking block (61), the locking block (61) being rotatably disposed on the fixed wire slot plate (4), the locking block (61) being provided with a ratchet gear (611) that is mutually engaged with the ratchet groove (51); a torsion spring (62), wherein the torsion spring (62) is arranged on the fixed wire slot plate (4) and two ends of the torsion spring (62) are respectively pressed against opposite side walls of the fixed wire slot plate (4) and the locking block (61), and the torsion spring (62) is used to push the locking block (61) close to the movable wire slot plate (5) and engage with the ratchet groove (51); An unlocking assembly (63), wherein the unlocking assembly (63) is arranged on the fixed wire trough plate (4) and is used to push the locking block (61) away from the movable wire trough plate (5).

2. The electric shock-proof hammer according to claim 1, characterized in that: The unlocking component (63) comprises: An unlocking rod (631), the unlocking rod (631) being slidably disposed on the fixed wire trough plate (4), the unlocking rod (631) and the locking block (61) being in contact with each other on a side close to the movable wire trough plate (5) and pushing the locking block (61) away from the movable wire trough plate (5); A compression spring (632), wherein the compression spring (632) is sleeved on the unlocking rod (631) and pressed against the fixed wire slot plate (4), and the compression spring (632) is used to push the unlocking rod (631) away from the locking block (61).

3. The electric shock-proof hammer according to claim 1, characterized in that: The fixed wire trough plate (4) and the movable wire trough plate (5) are both provided with a clamping groove (41) for clamping the power cable on one side close to the power cable, and a rubber pad (42) is provided in the clamping groove (41) for abutting against the power cable.

4. The electric shock-proof hammer according to claim 3, characterized in that: A plurality of protrusions (421) are arranged at intervals on a side of the rubber pad (42) close to the power cable, and the plurality of protrusions (421) facilitate fixing and clamping the power cable.

5. The electric shock-proof hammer according to claim 1, characterized in that: The connecting part (2) is a connecting block (21) arranged on a fixed wire trough plate (4); the hammer head part (3) is composed of a connecting rod (31) and a gravity hammer (32); two ends of the connecting rod (31) are respectively connected to the gravity hammer (32) and a side wall of the connecting block (21) near the bottom; two sets of the connecting rod (31) and the gravity hammer (32) are respectively located on two opposite side walls of the connecting block (21) near the bottom.

6. The electric shock-proof hammer according to claim 5, characterized in that: An external thread is provided on a side of the connecting rod (31) close to the connecting block (21); the connecting rod (31) is threadedly connected to the connecting block (21); a fixing nut (33) is threadedly mounted on the connecting rod (31); the fixing nut (33) is threadedly connected to the connecting rod (31) and is tightly pressed against a side wall of the connecting block (21).

7. The electric shock-proof hammer according to claim 6, characterized in that: An annular fixing groove (311) is provided on the side wall of the connecting rod (31) close to the connecting block (21), and a fixing assembly (22) for locking the two groups of connecting rods (31) is provided on the connecting block (21), and the fixing assembly (22) comprises: An insert block (221), the insert block (221) being slidably disposed on the connecting block (21), and two groups of fixing rods (222) being disposed at one end of the insert block (221) close to the connecting rod (31), and when the insert block (221) moves downward, the two groups of fixing rods (222) are respectively inserted into the fixing grooves (311) of the two groups of connecting rods (31); A locking bolt (223), wherein the locking bolt (223) passes through the insert block (221) and is threadedly connected to the connecting plate.

8. The electric shock-proof hammer according to claim 5, characterized in that: The fixed wire trough plate (4), the movable wire trough plate (5) and the gravity hammer (32) are all provided with a protective layer, and the protective layer is used to prevent the environment from corroding the fixed wire trough plate (4), the movable wire trough plate (5) and the gravity hammer (32).

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