Automatic impact opening and closing device for tank opening cover of torpedo tank

Abstract

The utility model belongs to the technical field of torpedo tanks, and particularly relates to an automatic impact opening and closing device for a tank opening cover of a torpedo tank, which is characterized by comprising a fixed support, a movable frame, a linkage frame, the tank opening cover, an annular chain and a chain wheel, the fixed support is arranged at the head or the tail of the torpedo tank car, and the front end of the movable frame is connected with the tank opening cover; the two ends of the annular chains are connected with the fixed support through chain wheels, the two annular chains are arranged on the fixed support in a bilateral symmetry mode, the movable frame is fixedly connected with an upper row of chains of the annular chains, the linkage frame is fixedly connected with a lower row of chains of the annular chains, a first shifting fork is arranged on the movable frame, and a second shifting fork is arranged on the linkage frame. The shape and the position of the shifting fork I are matched with and correspond to those of a collision plate I at an inlet of an iron-making plant, and the shape and the position of the shifting fork II are matched with and correspond to those of a collision plate II at an inlet of the steel-making plant. The device has the advantages that the device is not composed of a motor, a cable and other structures intolerant to high temperature, and the reliability of opening and closing the tank opening cover in the high-temperature environment can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of torpedo tanks, in particular to an automatic impact opening and closing device for a torpedo tank cover. Background Art

[0002] Torpedo tanks, also known as torpedo-type iron mixing cars, are large-scale molten iron transportation equipment with advantages such as low heat loss, long heat preservation time, and energy saving. They are mainly used to transport and process molten iron from iron-making blast furnaces to steel-making converters. Torpedo tanks also have the function of temporarily storing molten iron, so they can coordinate the temporary imbalance between iron-making and steel-making. At the same time, they can also complete desulfurization, desiliconization, dephosphorization and other operations during transportation.

[0003] At present, the competition in the steel industry is mainly concentrated in the following aspects: cost competition; product quality competition; sales service competition. Among them, cost competition is the most basic and critical factor. In the face of increasingly severe market conditions, reducing the production costs of enterprises and improving the core competitiveness of enterprises are the only way to maximize production value. Reducing the heat loss in the process of molten iron transportation is an important measure for steel enterprises to reduce losses in the logistics link and reduce logistics costs.

[0004] Due to the long transportation cycle and "three-removal" operation of the torpedo tank, the excessive temperature drop of the molten iron at the iron-steel interface will not only increase the consumption of ironmaking fuel and the gas-solid-liquid emission of blast furnace waste, but also reduce the amount of scrap steel added to the steelmaking converter, affecting the oxygen blowing operation of steelmaking. At the same time, excessive temperature drop of the molten iron will also cause crusting and nodules on the torpedo tank, reducing the service life of the tank. The outer layer of the torpedo tank is a steel shell, and the inner layer is lined with high-aluminum refractory bricks. The tank has good thermal insulation performance. Therefore, it is particularly important to set a cover plate on the torpedo filling port to keep the molten iron in the torpedo tank warm. It is not only a requirement of the steelmaking process, but also a requirement to reduce the energy consumption and cost of ironmaking and steelmaking.

[0005] The Chinese utility model patent with announcement number CN202779741U discloses a thermal insulation device for a torpedo tank, including a tank body and a tank cover. The tank cover is arranged at the tank mouth of the tank body. The tank cover is a split structure with two halves that are mirror-symmetrical. The tank cover is connected to one end of a swing arm, and the other end of the swing arm is connected to the output shaft of a reducer. The reducer is seated on the tank shell. The two-half tank cover makes the opening and closing of the tank cover easier, but the disadvantage is that the temperature at the mouth of the torpedo tank is relatively high, which is a great threat to the reducer or other electrical components that operate the tank cover. The high temperature greatly reduces the insulation reliability of cables and motors, which is not conducive to the safe operation of steel enterprises. In order to better the thermal insulation of molten iron, it is an urgent need in the industry to adopt a reliable torpedo tank mouth cover operating mechanism. The existing operating mechanisms are all troubled by the safety of this high-temperature environment and the high labor intensity of operators under high temperatures, and there is no better solution. Utility Model Content

[0006] The utility model aims to provide an automatic impact opening and closing device for the mouth cover of a torpedo tank, which overcomes the shortcomings of the prior art, has good high temperature resistance, can reliably complete the cover opening and closing tasks of a torpedo tank truck in a high temperature environment, and can minimize the impact on the time-consuming transportation of the torpedo tank while completing the cover insulation work of the torpedo tank. It does not require manual operation and can automatically complete the cover opening or cover closing operation during the travel of the torpedo tank truck.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A device for automatically impacting and opening and closing the mouth cover of a torpedo tank, characterized in that it comprises a fixed bracket, a movable bracket, a linkage bracket, a mouth cover, an annular chain and a sprocket. The fixed bracket is arranged at the head or tail of the torpedo tank car, the movable bracket is movably connected to the track on the top of the fixed bracket, and the front end of the movable bracket is connected to the mouth cover; both ends of the annular chain are connected to the fixed bracket through a sprocket, and the two annular chains are symmetrically arranged on the fixed bracket. The movable bracket is fixedly connected to the upper chain of the annular chain, and the linkage bracket is fixedly connected to the lower chain of the annular chain. A shift fork 1 is provided on the movable bracket, and a shift fork 2 is provided on the linkage bracket. The shape and position of the shift fork 1 match and correspond to the striker plate 1 at the entrance of the ironmaking plant, and the shape and position of the shift fork 2 match and correspond to the striker plate 2 at the entrance of the steelmaking plant.

[0009] Furthermore, the cross section of the track on the top of the fixed bracket is H-shaped, and two sprockets are arranged in the front and rear of the inner rectangular space of the track, and the distance between the two sprockets is 3000-3500mm; a plurality of clamping wheels and outer support wheels are arranged in the outer rectangular space of the track.

[0010] Furthermore, the clamping wheel is connected to the web of the track, and its wheel rim is upwardly connected to the bottom surface of the moving frame in a rolling manner.

[0011] Furthermore, the clamping wheel is connected to the inner side of the enclosure of the movable frame, and the wheel rim thereof is rollingly connected downward to the upper surface of the wing plate on the outer side of the track.

[0012] Furthermore, the outer support wheel is connected to the inner side of the enclosure of the mobile frame, or connected to the outer side of the web of the track.

[0013] Furthermore, a support wheel is provided below the outer wing plate of the track, and the support wheel is connected to the inner side of the enclosure plate of the movable frame; a clamping wheel is provided above the support wheel or no clamping wheel is provided.

[0014] Furthermore, the outer support wheel structure includes a wheel frame, a wheel axle and a radial roller ball bearing. The radial roller ball bearing is connected to the wheel frame as a wheel body through the wheel axle. Positioning sleeves are provided between the two sides of the radial roller ball bearing and the wheel frame.

[0015] Furthermore, the clamping wheel structure includes a supporting wheel hub, a bearing and a supporting wheel shaft, the bearing is installed in the supporting wheel hub, the supporting wheel hub is provided with a cover or no cover, and the supporting wheel hub is connected to the corresponding assembly by bolts; the supporting wheel structure includes a support, a pin shaft, a ball bearing and an adjusting bolt, the ball bearing is connected to the support by the pin shaft, a sleeve is provided between the ball bearing and the support, an adjusting bolt is provided at the bottom of the sleeve, the adjusting bolt is connected to the bottom of the support, the top of the adjusting bolt is against the bottom of the sleeve, and when the adjusting bolt is rotated, the pin shaft drives the ball bearing to rise and fall along the support.

[0016] Furthermore, the two left and right sprockets are connected to a synchronous shaft to form a wheel set.

[0017] Furthermore, the striker plate 1 and the striker plate 2 are respectively connected to the corresponding fixed objects in the factory building through elastic connecting seats, and a spring shaft or a torsion spring is provided in the elastic connecting seat.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1) The structure has good high temperature resistance, and there are no motors, cables and other structures that are not tolerant to high temperatures, which can ensure the reliability of opening and closing the tank cover of the torpedo tank truck in a high temperature environment;

[0020] 2) Whether it is the iron receiving process in the ironmaking plant or the pouring process in the steelmaking plant, the opening and closing of the cover are completed during the operation of the torpedo tank, which does not increase the time consumption of the torpedo tank to transport the molten iron, and reduces the energy consumption and cost of ironmaking and steelmaking;

[0021] 3) No manual operation is required, which reduces labor intensity. It can be completed automatically during the movement of the torpedo tanker, which can effectively reduce the temperature drop in the tank, especially the temperature drop of the molten iron after iron treatment, thereby promoting the green energy saving of the torpedo tanker and contributing to the cost reduction and efficiency improvement of the enterprise;

[0022] 4) The front end of the mobile frame is connected to the tank mouth cover, and the mobile frame is buckled and covered on the fixed bracket. There are support wheels on the left and right sides and the upper side to support the mobile frame and the fixed bracket to maintain a gap without slipping. This ensures that the torpedo tank mouth cover can be extended and retracted freely, and that the high plate will not produce a large flexural deformation during the extension and retraction process, so that the cover covers the filling port at a very small distance on the upper part without hitting other structures, and safety is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Top view of the .

[0025] Figure 3It is a schematic diagram of the application state structure of the embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the fixed bracket structure in the embodiment of the utility model, showing the relative position of the upper enclosure of the mobile rack and the track;

[0027] Figure 5 This is a structural schematic diagram of the installation state of the clamping wheel in the embodiment of the utility model;

[0028] Figure 6 This is a structural schematic diagram of the second installation state of the clamping wheel in the embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the outer support wheel structure in an embodiment of the utility model;

[0030] Figure 8 This is a schematic diagram of the sprocket installation structure in the embodiment of the utility model;

[0031] Fig. 9 This is a schematic diagram of the installation structure of the linkage frame in the embodiment of the utility model;

[0032] Fig.10 This is a schematic diagram of the structure of a collision plate in an embodiment of the utility model;

[0033] Fig.11 This is a schematic diagram of the structure of the second collision plate in the embodiment of the utility model;

[0034] In the figure: 1-fixed bracket, 2-mobile frame, 3-linked frame, 4-tank cover, 5-annular chain, 6-sprocket, 7-torpedo tank car, 8-track, 9-fork one, 9'-fork two, 10-impact plate one, 11-impact plate two, 12-pressure wheel, 13-outer support wheel, 14-enclosure, 15-support wheel, 16-wheel frame, 17-wheel axle, 18-radial roller ball bearing, 19-positioning spacer, 20-support wheel hub, 21-bearing, 22-support wheel axle, 23-cover, 24-support, 25-pin shaft, 26-ball bearing, 27-sleeve, 28-adjusting bolt, 29-synchronizing shaft, 30-linked frame guide rail, 31-bearing seat, 32-elastic connecting seat, 33-guide wheel, 34-connecting block, 35-bolt. DETAILED DESCRIPTION

[0035] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0037] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0038] See Figure 1-4 , is a schematic structural diagram of an embodiment of an automatic impact opening and closing device for a torpedo tank cover of the utility model, comprising a fixed bracket 1, a mobile bracket 2, a linkage bracket 3, a tank cover 4, an annular chain 5 and a sprocket 6. The fixed bracket 1 is arranged at the head or tail of a torpedo tank car 7, the mobile bracket 2 is movably connected to a track 8 on the top of the fixed bracket 1, and the front end of the mobile bracket 2 is connected to the tank cover 4; both ends of the annular chain 5 are connected to the track 8 on the fixed bracket 1 through a sprocket 6, and the two annular chains 5 are symmetrically arranged on the fixed bracket, the mobile bracket 2 is fixedly connected to the upper chain of the annular chain 5, the linkage bracket 3 is fixedly connected to the lower chain of the annular chain 5, a shift fork 1 9 is arranged on the mobile bracket 2, and a shift fork 2 9' is arranged on the linkage bracket 3. The shape and position of the shift fork 1 9 are the same as those of the striker 1 arranged at the entrance of the ironmaking plant. 0 matches, the shape and position of the fork 2 9' matches and corresponds to the striker 2 11 at the entrance of the steelmaking plant; when the torpedo tank car enters the ironmaking plant, the fork 9 hits the striker 10, and the resistance of the striker 10 causes the tank mouth cover to move and open the tank mouth, and molten iron can be added to the torpedo tank at this time; when the torpedo tank car leaves the ironmaking plant, the fork 9 hits the striker 1 in the opposite direction, the tank mouth cover 4 moves in the opposite direction, covers the tank mouth, and the torpedo tank car drives to the steelmaking plant; when the torpedo tank enters the steelmaking plant, the fork 2 9' hits the striker 2 11, the tank mouth cover 4 moves, opens the tank mouth, and pours the molten iron in the torpedo tank into the steelmaking furnace; when the torpedo tank car leaves the steelmaking plant, the fork 2 9' hits the striker 2 11 in the opposite direction, the tank mouth cover 4 moves in the opposite direction to cover the filling mouth, and the torpedo tank car 7 returns to the ironmaking plant to add molten iron, and the cycle is repeated. The torpedo tank car 7 moves back and forth on the track between the ironworks and the steelworks. After coming out of the ironworks, it is equivalent to reversing into the steelworks. The ring chain 5 enables the opening and closing operations to be automatically completed without human operation and without energy consumption.

[0039] The cross section of the track 8 on the top of the fixed bracket is H-shaped. Two sprockets 6 are arranged in the front and rear of the inner rectangular space of the track 8. The distance between the two sprockets 6 is 3000-3500mm, and a ring chain 5 is arranged between the two sprockets 6; a plurality of clamping wheels 12 and outer support wheels 13 are arranged in the outer rectangular space of the track 8.

[0040] See Figure 5 , is a structural schematic diagram of the installation state of the clamping wheel in the embodiment of the utility model. The shaft of the clamping wheel 12 is connected to the web of the track 8, and its rim is rollingly connected to the bottom surface of the upper plate of the mobile frame 2. This structure is suitable for the front side of the mobile frame 2, reducing the friction between the mobile frame 2 and the track 8 when the mobile frame 2 is extended forward, while keeping the clamping wheel 12 always in contact with the enclosure 14 of the mobile frame 2 to prevent the "derailment" phenomenon from occurring.

[0041] The structure of the clamping wheel 12 includes a support hub 20, a bearing 21 and a support wheel shaft 22. The bearing 21 is installed in the support hub 20 through a cover 23. The support hub 20 is connected to the corresponding assembly through bolts. If necessary, the outer side of the support hub 20 may not be provided with a cover.

[0042] See Figure 6 , is a schematic diagram of the second structure of the clamping wheel installation state in the embodiment of the utility model. The axis of the clamping wheel 12 is connected to the two side panels 14 of the mobile frame 2, and its wheel rim is rollingly connected with the upper surface of the lower wing plate on the outer side of the track 8 downward. This structure is suitable for the rear side of the mobile frame 2 to reduce the friction between the mobile frame 2 and the track 8 when the mobile frame 2 retracts backward, and when the mobile frame 2 moves, the clamping wheel 12 moves with the mobile frame 2 and does not separate from the track.

[0043] A support wheel 15 is provided below the outer wing plate of the track 8, and the support wheel 15 is connected to the enclosure 14 of the mobile frame 2. The support wheel 15 structure includes a support 24, a pin 25, a ball bearing 26 and an adjusting bolt 28. The ball bearing 26 is connected to the support 24 through the pin 25. A sleeve 27 is provided between the ball bearing 26 and the support 24. An adjusting bolt 28 is provided at the bottom of the sleeve 27. The adjusting bolt 28 is connected to the bottom of the support 24. The top of the adjusting bolt 28 is against the bottom of the sleeve 27. When the adjusting bolt 28 is rotated, the pin 25 drives the ball bearing to rise and fall along the support 24, so that the support wheel 15 rises and falls to adjust the lower wing plate of the track. A clamping wheel 12 is provided above the support wheel 15 to prevent the mobile frame from tilting under the action of structural gravity; the clamping wheel 12 may not be provided above the support wheel provided at the front end of the mobile frame 2. Four bolt holes are provided on the support 24, so that the support wheel 15 is bolted and fixedly connected to the enclosure 14 of the mobile bracket 2.

[0044] See Figure 7, is a schematic diagram of the outer support wheel structure in an embodiment of the utility model. The outer support wheel 13 is connected to the inner sides of the two side panels 14 of the mobile frame 2, or is connected to the outer side of the web of the track 8. It can be set at a suitable position in the track 8 as needed to support the panels 14 and prevent the panels 14 from buckling and deforming inward.

[0045] The structure of the outer support wheel 13 includes a wheel frame 16, a wheel axle 17 and a radial roller ball bearing 18. The radial roller ball bearing 18 is connected to the wheel frame 16 as a wheel body through the wheel axle 17. Positioning sleeves 19 are provided between the two sides of the radial roller ball bearing 18 and the wheel frame 16. The wheel axles 17 of the two groups of outer support wheels at the rear end of the mobile frame are fastened to the enclosure of the mobile frame with bolts. The outer support wheels move with the mobile frame to ensure that the outer support wheels 13 are always in contact with the track 8; the wheel axles of the two groups of outer support wheels 13 at the front end of the mobile frame 2 are fastened to the web of the track 8 with bolts to ensure that the mobile frame will not be separated from the outer support wheels when moving.

[0046] See Figure 8 , is a schematic diagram of the sprocket installation structure in the embodiment of the utility model, two sprockets 6 at opposite positions on the left and right are connected to a synchronous shaft 29 to form a wheel pair, so that the mobile frame 2 can keep the left and right synchronization when moving. The sprocket 6 is connected to the track 8 through a bearing seat 31.

[0047] See Fig. 9 , is a schematic diagram of the installation structure of the linkage frame in the embodiment of the utility model. The linkage frame guide rail 30 is fixedly connected to the inner wing plate of the track 8, and the linkage frame 3 reciprocates along the linkage frame guide rail 30 through the guide wheel 33. The shift fork 29' on the linkage frame 3 is located on both sides of the outer side of the track 8. The linkage frame 3 is fixedly connected to the ring chain 5 through the connecting block 34 and the bolt 35. The track 8 is grooved at the corresponding position, and the bolt 35 moves in the groove. The linkage frame guide rail 30 is made of 200mm*200mm H-shaped steel and is connected to the track 8 with bolts, which is easy to install.

[0048] See Fig.10 It is a schematic diagram of the structure of the striker plate 1 in the embodiment of the utility model. The striker plate 10 is set at the door of the ironworks plant. When the torpedo tank car 7 enters the entrance of the ironworks plant, the suspended striker plate 10 touches the fork 9. As the torpedo tank car 7 moves forward, the tank cover 4 opens. When the moving frame 2 reaches the limit position, it stops moving. The elastic connection seat 32 at the top of the striker plate 10 is tilted by force, causing the lower end of the striker plate 10 to separate from the fork 9, and the striker plate 10 is reset by elastic force. A spring shaft is arranged in the elastic connection seat 32.

[0049] See Fig.11It is a schematic diagram of the structure of the striker plate 2 set at the entrance of the steelmaking plant in the embodiment of the utility model. The trigger structure of the striker plate 2 11 is ∩-shaped, corresponding to the position of the fork 2 9' on the linkage frame 3, and an elastic connection seat 32 is also provided on its top. When the torpedo tank car 7 leaves the ironmaking plant, the striker plate 2 11 touches the fork 2 9'. As the torpedo tank car 7 moves forward, the tank cover 4 is closed. When the linkage frame 3 reaches the limit position and no longer moves, the elastic connection seat 32 is deformed by force, and the striker plate 2 11 tilts and separates from the fork 2 9'. The action ends, and the striker plate 2 11 is reset by elastic force. In the embodiment, a torsion spring structure is provided in the elastic connection seat 32.

[0050] The spring shaft or torsion spring in the elastic connection seat 32 must be strong enough to ensure that the torque can push the moving frame 2 or the linkage frame 3 to open and close the filling port cover. When the filling port cover is in the open or closed position, the shift fork and the striker can be tilted and disengaged. The striker is reset under the action of the torque to ensure normal operation next time.

[0051] In order to ensure that the opening and closing of the tank cover 4 is flexible, a bearing is used as a sliding support and is lubricated with butter. In order to ensure that the structure of the utility model is easy to install and maintain, necessary and appropriate process holes are opened at the required positions of the H-shaped track.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic impact opening and closing device for a torpedo tank cover, characterized in that: It includes a fixed bracket, a movable bracket, a linkage bracket, a tank cover, an annular chain and a sprocket. The fixed bracket is arranged at the head or tail of the torpedo tank car, the movable bracket is movably connected to the track on the top of the fixed bracket, and the front end of the movable bracket is connected to the tank cover; both ends of the annular chain are connected to the fixed bracket through sprockets, and the two annular chains are symmetrically arranged on the fixed bracket. The movable bracket is fixedly connected to the upper chain of the annular chain, and the linkage bracket is fixedly connected to the lower chain of the annular chain. A shift fork 1 is provided on the movable bracket, and a shift fork 2 is provided on the linkage bracket. The shape and position of the shift fork 1 match and correspond to a striker plate 1 at the entrance of the ironmaking plant, and the shape and position of the shift fork 2 match and correspond to a striker plate 2 at the entrance of the steelmaking plant.

2. The automatic impact opening and closing device for the torpedo can lid according to claim 1, characterized in that: The cross section of the track on the top of the fixed bracket is H-shaped, and two sprockets are arranged in the front and rear of the inner rectangular space of the track, and the distance between the two sprockets is 3000-3500mm; a plurality of clamping wheels and outer support wheels are arranged in the outer rectangular space of the track.

3. The automatic impact opening and closing device for the torpedo can lid according to claim 2, characterized in that: The clamping wheel is connected to the web of the track, and its wheel rim is connected to the bottom surface of the moving frame in a rolling manner upward.

4. The automatic impact opening and closing device for the torpedo can lid according to claim 2, characterized in that: The clamping wheel is connected to the inner side of the enclosure of the moving frame, and the wheel rim thereof is rollingly connected downwardly to the upper surface of the wing plate on the outer side of the track.

5. The automatic impact opening and closing device for the torpedo can lid according to claim 2, characterized in that: The outer support wheel is connected to the inner side of the enclosure plate of the moving frame, or is connected to the outer side of the web plate of the track.

6. The automatic impact opening and closing device for the torpedo can lid according to claim 2, characterized in that: A support wheel is provided below the outer wing plate of the track, and the support wheel is connected to the inner side of the enclosure plate of the mobile frame; a clamping wheel is provided above the support wheel or no clamping wheel is provided.

7. The automatic impact opening and closing device for the torpedo tank cover according to claim 2 is characterized in that: The outer support wheel structure comprises a wheel frame, a wheel axle and a radial roller ball bearing. The radial roller ball bearing is connected to the wheel frame through the wheel axle as a wheel body. Positioning sleeves are arranged between the two sides of the radial roller ball bearing and the wheel frame.

8. The automatic impact opening and closing device for the torpedo can lid according to claim 6, characterized in that: The clamping wheel structure includes a supporting wheel hub, a bearing and a supporting wheel shaft. The bearing is installed in the supporting wheel hub. The supporting wheel hub is provided with a cover or no cover. The supporting wheel hub is connected to the corresponding assembly through bolts. The supporting wheel structure includes a support, a pin shaft, a ball bearing and an adjusting bolt. The ball bearing is connected to the support through the pin shaft. A sleeve is provided between the ball bearing and the support. An adjusting bolt is provided at the bottom of the sleeve. The adjusting bolt is connected to the bottom of the support. The top of the adjusting bolt is against the bottom of the sleeve. When the adjusting bolt is rotated, the pin shaft drives the ball bearing to rise and fall along the support.

9. The automatic impact opening and closing device for the torpedo can lid according to claim 1, characterized in that: The two sprockets on the left and right are connected to a synchronous shaft to form a wheel pair.

10. The automatic impact opening and closing device for the torpedo can lid according to claim 1, characterized in that: The first and second impact plates are connected to corresponding fixed objects in the factory building through elastic connection seats respectively, and a spring shaft or a torsion spring is arranged in the elastic connection seat.

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