A commutation impact device

Abstract

The present invention relates to the technical field of disassembly tooling, and discloses a commutation impact device, which includes a cylinder body, a hammering part, a lifting component, a commutation component and a fixing component. Among them, the inside of the cylinder body is hollow; the hammering part is slidably connected to the inside of the cylinder body; the lifting component is arranged at the top of the cylinder body, one end of which extends into the inside of the cylinder body and is connected to the hammering part, the commutation component is arranged at the bottom of the cylinder body, and the commutation component includes a first output head and a second output head which are perpendicularly connected; the fixing component is used to fix the commutation impact device. Through the above technical solution, the lifting component lifts the hammering part, the cylinder body guides, completes the vertical strike of the heavy hammer, and transmits the impact force through the first output head and the second output head, so as to achieve the purpose of striking and disassembling the tightly fitted bolt by transmitting the impact force through the longitude rotation angle, realizing the function of operating in a narrow space and improving the practicability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of disassembly tooling, and in particular, to a commutation impact device. Background Art

[0002] When disassembling and inspecting the stern shafting of a ship, it is necessary to remove the tight-fitting connection bolts between each shaft and the shafts (thrust shaft, intermediate shaft, and stern shaft). Usually, the disassembly is to first loosen and remove the nuts, and then use a sledgehammer to strike and loosen them. However, for some designs, the space position is relatively small, as shown below Figure 1 The distance between the front shaft seal and the flange coupling bolt in the middle is relatively narrow, and there is not enough effective striking space for using a sledgehammer (as shown below Figure 2 ). At this time, it is necessary for the staff to disassemble the bolts at a high frequency at an angle. On the one hand, the hammering force is insufficient and the disassembly time is long, which further prolongs the construction period, making the ship unable to be quickly put into operation and greatly increasing the operation cost of the ship. On the other hand, it is difficult for the staff to strike frequently, resulting in a large amount of manual loss and increasing the labor cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a commutation impact device, which can be applied to the disassembly of coupling bolts in a narrow space. By converting the longitudinal impact force into a transverse impact force, the bolts can be impacted and disassembled, improving the disassembly efficiency and solving the problem that the existing disassembly method cannot effectively strike in a narrow space.

[0004] To achieve the above purpose, the present invention provides a commutation impact device, including:

[0005] A cylinder body, the interior of the cylinder body is hollow;

[0006] A hammering part, the hammering part is slidably connected to the interior of the cylinder body;

[0007] A lifting assembly, the lifting assembly is arranged at the top of the cylinder body, one end of which extends into the interior of the cylinder body and is connected to the hammering part, and is used to lift and release the hammering part;

[0008] A commutation assembly, the commutation assembly is arranged at the bottom of the cylinder body, the commutation assembly includes a first output head and a second output head that are perpendicularly connected to each other, one end of the first output head away from the second output head extends upward into the cylinder body, one end of the second output head away from the first output head faces the bolt to be disassembled, and the contact surfaces of the first output head and the second output head are inclined planes to each other;

[0009] A fixing assembly, the fixing assembly is arranged on the cylinder body and is used to fix the cylinder body.

[0010] Preferably, the lifting assembly includes:

[0011] A mounting bracket, the mounting bracket is arranged on the top of the cylinder;

[0012] A pulley block, wherein the pulley block is arranged on the mounting bracket;

[0013] A lifting rope, the lifting rope is wound around the pulley block, one end of the lifting rope extends outward from the mounting bracket;

[0014] A guide rod, wherein the guide rod is slidably connected to the mounting bracket, one end of the guide rod is connected to the other end of the lifting rope, and the other end of the guide rod penetrates downward and extends into the interior of the cylinder;

[0015] A self-locking mechanism, which is arranged inside the cylinder, connected to one end of the guide rod, and can be locked into the top slot of the hammering part under the action of its own gravity;

[0016] An unlocking portion is arranged at the top of the inner cavity of the cylinder and is used to unlock the self-locking mechanism to release the hammering portion.

[0017] Preferably, the self-locking mechanism comprises two clamping bodies arranged opposite to each other, a spring and a connecting plate arranged between the two clamping bodies at intervals, the spring is arranged in the middle of the two clamping bodies, the two ends of the connecting plate are respectively hinged to the two clamping bodies, the guide rod is connected to the connecting plate, and bosses are arranged on the opposite sides of the bottom of the two clamping bodies, and the bosses can be inserted into the slots;

[0018] The unlocking portion is a conical platform, which can open the upper parts of the two clamps and close the lower parts of the two clamps, thereby releasing the hammering portion.

[0019] Preferably, the two opposite sides of the bottom of the two clamping bodies are both inclined surfaces.

[0020] Preferably, the reversing assembly further comprises an L-tube, in which a vertical channel and a horizontal channel communicating with each other are arranged, and the first output head and the second output head are slidably connected in the vertical channel and the horizontal channel respectively.

[0021] Preferably, the reversing assembly further comprises two guide pins respectively arranged on the first output head and the second output head, and guide grooves corresponding to the two guide pins are respectively arranged on the vertical channel and the horizontal channel.

[0022] Preferably, the fixing assembly includes a support mechanism disposed at the bottom of the cylinder body, two L-shaped plates symmetrically disposed on the side surface of the cylinder body, a height adjustment mechanism disposed between the two L-shaped plates, and two horizontal adjustment mechanisms respectively disposed at one end of the two L-shaped plates away from the cylinder body. A U-shaped fixing bracket with a downward opening is formed between the support mechanism, the L-shaped plates and the cylinder body.

[0023] Preferably, the support mechanism includes a fixed support disposed at the bottom of the cylinder body and an adjustable support disposed at the bottom of the fixed support.

[0024] Preferably, the height adjustment mechanism includes an adjustment nut fixedly disposed between the two L-shaped plates, a lifting screw threadedly connected to the adjustment nut, a bottom pad disposed at the bottom of the lifting screw, and a first rotating handle disposed at the top of the lifting screw.

[0025] Preferably, the horizontal adjustment mechanism includes a horizontal adjustment screw and a second rotating handle disposed at one end of the horizontal adjustment screw. The other end of the horizontal adjustment screw penetrates and extends out of the L-shaped plate.

[0026] Preferably, a plurality of ventilation holes are provided on the circumferential side of the cylinder body.

[0027] Through the above technical solutions, the lifting assembly lifts the hammering part and guides the cylinder body to complete the vertical hammering of the heavy hammer, and transmits the impact force through the first output head and the second output head, so as to achieve the purpose of transmitting the impact force at the longitude angle of the acting force to disassemble the tightly fitted bolt, realizing the function of operating in a narrow space, eliminating the need for manual hammering at a small angle and high frequency, reducing the disassembly difficulty, greatly shortening the maintenance period, enabling the ship to be put into use quickly, and thus reducing the ship maintenance cost.

[0028] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the following specific implementation to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0030] Figure 1 Shows a schematic diagram of the installation of a flange coupling bolt in the prior art;

[0031] Figure 2 Shows a schematic diagram of manually disassembling a flange coupling bolt in the prior art;

[0032] Figure 3 Shows a schematic diagram of the structure of the commutation impact device of the present invention;

[0033] Figure 4 shows the present invention Figure 3 in a side view;

[0034] Figure 5 shows the present invention Figure 3 in an enlarged schematic view at position A in the present invention;

[0035] Figure 6 shows the present invention Figure 3 in an enlarged schematic view at position B in the present invention;

[0036] Figure 7 shows the present invention Figure 3 in a schematic view of the structure in the K direction in the present invention;

[0037] Figure 8 shows the implementation flowchart of the commutation impact device of the present invention. Detailed implementation manners

[0038] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0039] Please refer to Figure 3 , the present invention provides a commutation impact device, including a cylinder body 1, a hammering part 2, a lifting component 3, a commutation component 4 and a fixing component 5. The inside of the cylinder body 1 is hollow, the hammering part 2 is slidably connected to the inside of the cylinder body 1, the lifting component 3 is arranged at the top of the cylinder body 1, one end of which extends into the inside of the cylinder body 1 (specifically extending through the through hole on the cylinder body 1) and is connected to the hammering part 2, and is used to pull up and release the hammering part 2. The commutation component 4 is arranged at the bottom of the cylinder body 1 and is used to convert the kinetic energy generated by the hammering part 2 in the vertical direction into the impact energy in the horizontal direction, so as to knock on the coupling bolt. The fixing component 5 is arranged on the cylinder body 1 and is used to fix the cylinder body 1.

[0040] In this embodiment, the cylinder body 1 can be made of wear-resistant and impact-resistant metal or other alloy steel. The shape of the cylinder body 1 is cylindrical, and a cylindrical hollow area is arranged inside. The hammering part 2 can slide up and down in the hollow area. Through holes are opened at both the top and bottom of the cylinder body 1 to facilitate the installation of the lifting component 3 and the commutation component 4. A plurality of air holes 11 are also arranged on the side circumference of the cylinder body 1, and the plurality of air holes 11 are distributed in a matrix on the side of the cylinder body 1 (see Figure 4 ). When the hammering part 2 moves up and down, the gas in the space inside can be quickly discharged or inhaled from the plurality of air holes 11, which can greatly reduce the air resistance when the hammering part 2 moves inside the cylinder body 1, so that more of the potential energy of the hammering part 2 can be converted into the energy required for commutation impact, thereby reducing energy loss.

[0041] The hammering part 2 can move up and down inside the cylinder body 1. The shape of the hammering part 2 can be set as a cylindrical shape matching the inner diameter of the cylinder body 1, and its diameter is slightly smaller than the inner diameter of the cylinder body 1. Specifically, the hammering part 2 can be a hammer head made of a metal material or other alloy material that is resistant to impact and wear, and its weight is at least 7 times that of a sledgehammer used in normal use.

[0042] According to the specific working conditions, the lifting assembly 3 can be selected from a manual lifting device and a machine automatic lifting device. If the distance from the front shaft seal to the flange coupling bolt is large enough and not limited by space, a machine automatic lifting device can be used for lifting. If the distance from the front shaft seal to the flange coupling bolt is very small and limited by space, a manual lifting device can be used for lifting.

[0043] In this embodiment, the manual lifting device is specifically described. The lifting assembly 3 includes a mounting bracket 31, a pulley block 32, a lifting rope 33, a guide rod 34, a self-locking mechanism 35, and an unlocking part 36. Among them, the mounting bracket 31 is arranged at the top of the cylinder body 1, the pulley block 32 is arranged on the mounting bracket 31, the lifting rope 33 is wound around the pulley block 32, one end of which extends out of the mounting bracket 31 outward, the guide rod 34 is slidably connected to the mounting bracket 31, one end of the guide rod 34 is connected to the other end of the lifting rope 33, and the other end of the guide rod 34 penetrates downward and extends into the interior of the cylinder body 1. The self-locking mechanism 34 is arranged inside the cylinder body 1, connected to one end of the guide rod 34, and can be snapped into the top slot 21 of the hammering part 2 under its own gravity. The unlocking part 36 is arranged at the top of the inner cavity of the cylinder body 1 for unlocking the self-locking mechanism 35 to release the hammering part 2.

[0044] Specifically, a vertical slide rail is arranged on the mounting bracket 31, the guide rod 34 is slidably connected to the slide rail, and the lifting rope 33 can be selected as a steel wire rope. The pulley block 32 can be designed according to the working conditions. In this embodiment, the pulley block 2 is selected to be composed of four pulleys, two fixed pulleys and two movable pulleys. The two fixed pulleys are arranged side by side at the top of the mounting bracket 31, and the two movable pulleys are arranged below the two fixed pulleys and fixedly connected to the guide rod 34. The steel wire rope is wound around each pulley, one end (the movable end) extends out of the mounting bracket 31, and the other end (the fixed end) is fixed to the top of the mounting bracket 31. When pulling the movable end, the two movable pulleys are driven to move upward, thereby driving the guide rod 34 to move upward. The guide rod 34 lifts the hammering part 2 through the self-locking mechanism 35, thus completing the lifting step of the hammering part 2. Lifting through the pulley block 32 is more labor-saving. Compared with the original hammering disassembly, with the same force, a sledgehammer with a larger mass can be lifted, and the knocking efficiency is higher.

[0045] Please refer to Figure 5The self-locking mechanism 35 includes two clamping bodies 351 arranged opposite to each other, a spring 352 and a connecting plate 353 arranged between the two clamping bodies 351 at an interval, the spring 352 is arranged in the middle position of the two clamping bodies 351, the two ends of the connecting plate 353 are respectively hinged to the two clamping bodies 351, the guide rod 34 is connected to the connecting plate 353, and the two clamping bodies 351 are provided with a boss 3511 on the opposite side of the bottom, and the boss 3511 can be inserted into the card slot 21, and the unlocking portion 36 is a conical platform.

[0046] The working principle of the self-locking mechanism 35 in this embodiment is similar to that of a clamp. In the initial state, the self-locking mechanism 35 is located at the top of the inner cavity of the cylinder 1. When hammering is required, the movable end of the lifting rope 33 is loosened, and the self-locking mechanism 35 moves downward under the action of gravity, thereby inserting into the card slot 21 of the hammering part 2. Due to the action of the spring 352, the boss 3511 on the clamp body 351 is inserted into the card slot 21, and then the lifting rope 33 is pulled. During the lifting process, the connecting plate 353 is subjected to force, which causes the lower half of the two clamp bodies 351 to be supported outward, so that the boss 3511 and the card slot 21 are more tightly engaged, so that the hammering part 2 is more stable during movement and will not fall off midway. When the self-locking mechanism 35 approaches the unlocking part 36, the conical surface of the unlocking part 36 will stretch the upper parts of the two clamps 351, and the lower parts of the two clamps 351 will retract inward, thereby separating the boss 3511 from the slot 21. After the hammering part 2 loses the lifting force of the boss 3511, it performs free fall motion and hammers the reversing assembly 4.

[0047] In order to prevent interference between the unlocking part 36 and the connecting plate 353, the connecting plate 353 is arranged below the spring 352. In addition, a limit block 341 is arranged on the side of the guide rod 34 located inside the cylinder 1. The setting of the limit block 341 can prevent the clamp 351 from opening too much, so that the bottom of the unlocking part 36 collides with other accessories of the self-locking mechanism 35. That is, when the self-locking mechanism 35 opens to a sufficient extent to unlock the hammer part 2, the limit block 341 abuts against the unlocking part 36 to prevent the self-locking mechanism 35 from being further pulled upward. In addition, the opposite sides of the bottom of the two clamps 351 are both inclined surfaces, that is, during the downward movement of the self-locking mechanism 35, the boss 3511 can be more smoothly inserted into the card slot 21.

[0048] Please refer to Figure 3 and Figure 6, the commutation assembly 4 includes a first output head 41 and a second output head 42 that are perpendicularly connected to each other. One end of the first output head 41 away from the second output head 42 extends upward into the cylinder body 1. One end of the second output head 42 away from the first output head 41 faces the bolt to be removed. The contact surfaces of the first output head 41 and the second output head 42 are inclined planes. After the first output head 41 is impacted by the hammering part 2, it squeezes the second output head 42 under the action of the inclined plane, thereby converting the vertical force into a horizontal force, and then impacting and disassembling the coupling bolt to be removed.

[0049] Specifically, the commutation assembly 4 further includes an L-shaped cylinder 43, which is internally provided with a vertically communicating channel and a horizontally communicating channel. The first output head 41 and the second output head 42 are respectively slidably connected in the vertical channel and the horizontal channel. The commutation assembly 4 further includes two guide pins 44 respectively arranged on the first output head 41 and the second output head 42. Guide grooves corresponding to the two guide pins 44 are respectively arranged on the vertical channel and the horizontal channel. The two guide pins 44 provide guidance for the first output head 41 and the second output head 42.

[0050] The fixing assembly 5 includes a support mechanism 51 arranged at the bottom of the commutation assembly 4, two L-shaped plates 52 symmetrically arranged on the side surface of the cylinder body 1, a height adjustment mechanism 53 arranged between the two L-shaped plates 52, and two horizontal adjustment mechanisms 54 respectively arranged at one end of the two L-shaped plates 52 away from the cylinder body 1. An open-downward U-shaped fixing frame is formed among the support mechanism 51, the L-shaped plates 52, and the cylinder body 1. During specific installation, the U-shaped fixing frame straddles the flange to be removed. Then, the support mechanism 51 is the first support leg of the U-shaped fixing frame, and one end of the L-shaped plate 52 away from the cylinder body 1 is the second support leg of the U-shaped fixing frame. The support mechanism 51 supports on the outside of the shaft diameter, and the horizontal adjustment mechanism 54 on the second support leg abuts against the flange to be removed. In addition, a plurality of reinforcing ribs 521 are also arranged between the two L-shaped plates 52 to improve the overall stability of the two L-shaped plates 52.

[0051] Specifically, the support mechanism 51 includes a fixed support 511 arranged at the bottom of the cylinder body 1 and an adjustable support 512 arranged at the bottom of the fixed support 511. The fixed support 511 is attached to the outer side wall of the L-shaped cylinder 43, and its height is greater than the height of the L-shaped cylinder 43. The guide pin 44 penetrates out from the side wall of the fixed support 511, and a corresponding guide groove is arranged on the fixed support 511. The bottom surface of the adjustable support 512 is arc-shaped and can better fit the shaft diameter. A paper sheet is also arranged between the bottom surface of the adjustable support 512 and the shaft diameter to reduce the impact force on the shaft during the impact process. The fixed support 511 and the adjustable support 512 can be connected by bolts.

[0052] Please refer to Figure 3 and Figure 7, the height adjustment mechanism 53 includes an adjustment nut 531 fixedly arranged between two L-shaped plates 52, a lifting screw rod 532 threadedly connected to the adjustment nut 531, a bottom pad 533 arranged at the bottom of the lifting screw rod 532, and a first rotating handle 534 arranged at the top of the lifting screw rod 532. During specific adjustment, the lifting screw rod 532 is driven to rotate by the first rotating handle 534. Due to the interaction between the screw rod and the nut, the L-shaped plate 52 is driven to move up and down, and then the entire device is driven to lift and lower.

[0053] Preferably, the horizontal adjustment mechanism 54 includes a horizontal adjustment screw rod 541 and a second rotating handle 542 arranged at one end of the horizontal adjustment screw rod 541. The other end of the horizontal adjustment screw rod 541 penetrates and extends out of the L-shaped plate 52. When adjusting the horizontal position, the second rotating handle 542 is rotated to make the horizontal adjustment screw rod 541 move towards the flange to be disassembled and abut against the flange to be disassembled, so that the second output head 42 abuts against the coupling bolt. For better installation, a gasket can also be arranged at the end of the horizontal adjustment screw rod 541 far from the second rotating handle 542.

[0054] During specific installation, the U-shaped mounting bracket is straddled on the flange to be disassembled. According to the height of the bolt to be disassembled, the height of the adjustable support 512 is adjusted so that the second output head 42 is opposite to the bolt to be disassembled; then the horizontal adjustment mechanism 54 is adjusted so that the two second output heads 42 abut against the bolt to be disassembled; and then the height adjustment mechanism 53 is adjusted so that the height adjustment mechanism 533 and the support mechanism 51 form a common support.

[0055] During specific use, please refer to Figure 8 the schematic diagrams of a, b, c, d, and e in. In the schematic diagram a, the guide rod 34 and the self-locking mechanism 35 fall downward. In the schematic diagram b, the self-locking mechanism 35 is inserted into the card slot 21 of the hammering part 2. In the schematic diagram c, a person pulls the steel wire rope to drive the pulley block to move, and the hammering part 2 is driven to move upward through the guide rod 34 and the self-locking mechanism 35. In the schematic diagram d, the two clamping bodies 351 of the self-locking mechanism 35 contact the cone of the unlocking part 36, so that the self-locking mechanism 35 is separated from the card slot 21 of the hammering part 2. In the schematic diagram e, the hammering part 2 loses the lifting of the self-locking mechanism 35, and thus falls freely downward to impact the first output head 41. The first output head 41 drives the second output head 42 to impact the bolt to be disassembled, thereby completing a hammering work.

[0056] Through the above technical solutions, the lifting assembly 3 lifts the hammering part 2 and the cylinder body 1 guides, completing the vertical impact of the heavy hammer, and the impact force is transmitted through the first output head 41 and the second output head 42, so as to achieve the purpose of transmitting the acting force through a 90-degree angle to strike and disassemble the tightly fitted bolt, realizing the function of operating in a narrow space and improving the practicability of the device.

[0057] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention. In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination manners.

[0058] In addition, any combination can be made among various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should equally be regarded as the content disclosed by the present invention.

Claims

1. A commutation impact device, characterized in that, include: A cylinder, wherein the interior of the cylinder is hollow; A hammering part, the hammering part is slidably connected to the inside of the cylinder; A lifting assembly, the lifting assembly is arranged at the top of the cylinder, one end of which extends into the interior of the cylinder and is connected to the hammering part, and is used to pull up and release the hammering part; A reversing assembly, the reversing assembly is arranged at the bottom of the cylinder, the reversing assembly comprises a first output head and a second output head which are vertically connected to each other, an end of the first output head away from the second output head extends upward into the cylinder, an end of the second output head away from the first output head is opposite to the bolt to be removed, and contact surfaces of the first output head and the second output head are mutually inclined surfaces; A fixing assembly, the fixing assembly is arranged on the cylinder and is used to fix the cylinder; The lifting assembly comprises: A mounting bracket, the mounting bracket is arranged on the top of the cylinder; A pulley block, wherein the pulley block is arranged on the mounting bracket; A lifting rope, the lifting rope is wound around the pulley block, one end of the lifting rope extends outward from the mounting bracket; A guide rod, wherein the guide rod is slidably connected to the mounting bracket, one end of the guide rod is connected to the other end of the lifting rope, and the other end of the guide rod penetrates downward and extends into the interior of the cylinder; A self-locking mechanism, wherein the self-locking mechanism is arranged inside the cylinder, connected to one end of the guide rod, and can be stuck in the top slot of the hammering part under the action of its own gravity; the self-locking mechanism comprises two clamping bodies arranged opposite to each other, a spring and a connecting plate arranged between the two clamping bodies at intervals, the spring is arranged in the middle of the two clamping bodies, the two ends of the connecting plate are respectively hinged to the two clamping bodies, the guide rod is connected to the connecting plate, and bosses are arranged on the opposite sides of the bottom of the two clamping bodies, and the bosses can be stuck in the slots; The unlocking part is arranged at the top of the inner cavity of the cylinder, and is used to unlock the self-locking mechanism to release the hammering part; the unlocking part is a conical platform, which can open the upper parts of the two clamps and close the lower parts of the two clamps, thereby releasing the hammering part.

2. The commutation impact device according to claim 1, wherein The opposite sides of the bottoms of the two clamping bodies are both inclined surfaces.

3. The commutation impact device according to claim 1, characterized in that The reversing assembly further comprises an L-tube, wherein a vertical channel and a horizontal channel communicating with each other are arranged inside the L-tube, and the first output head and the second output head are slidably connected in the vertical channel and the horizontal channel respectively.

4. The commutation impact device according to claim 1, characterized in that The fixing assembly includes a supporting mechanism arranged at the bottom of the cylinder, two L-plates symmetrically arranged on the sides of the cylinder, a height adjustment mechanism arranged between the two L-plates, and two horizontal adjustment mechanisms respectively arranged at one end of the two L-plates away from the cylinder, and a U-shaped fixing frame with an opening downward is formed between the supporting mechanism, the L-plates and the cylinder.

5. The commutation impact device according to claim 4, characterized in that, The support mechanism comprises a fixed support arranged at the bottom of the cylinder and an adjustable support arranged at the bottom of the fixed support.

6. The commutation impact device according to claim 5, wherein, The height adjustment mechanism includes an adjusting nut fixedly arranged between the two L-shaped plates, a lifting screw rod threadedly connected to the adjusting nut, a bottom pad arranged at the bottom of the lifting screw rod, and a first rotating handle arranged at the top of the lifting screw rod.

7. The commutation impact device according to claim 6, characterized in that, The horizontal adjustment mechanism includes a horizontal adjustment screw rod and a second rotating handle arranged at one end of the horizontal adjustment screw rod, and the other end of the horizontal adjustment screw rod penetrates through and extends out of the L-shaped plate.

8. The commutation impact device according to any one of claims 1-7, characterized in that, A plurality of ventilation holes are arranged on the side circumference of the cylinder body.

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