Adjustable chain controller counter weight

Abstract

The utility model discloses an adjustable chain controller counter weight which comprises a vertical frame, a cable lifter and a knife switch structure, the cable lifter is rotatably arranged on the vertical frame, the knife switch structure is rotatably connected to the vertical frame, the knife switch structure comprises a knife switch rod, a balance rod and an adjustable counter weight structure, one end of the knife switch rod is hinged to the vertical frame, the middle of the knife switch rod is clamped into the vertical frame, and the other end of the knife switch rod is hinged to the balance rod. The balance rod is arranged by reversely extending from the hinged end of the knife switch rod, and the end part of the balance rod is provided with an adjustable balance weight structure. According to the utility model, the balance weight additionally arranged on the knife switch of the conventional chain controller is optimized, the manpower for opening and closing the knife switch is saved through the disassembly and assembly of the detachable balancing weight when the knife switch is closed and opened, the problem that the knife switch is laborious to close because the balance weight of the conventional large chain controller is too heavy is solved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to an adjustable chain stopper counterweight. Background Art

[0002] Chain stopper, also known as chain stopper or anchor chain stopper, is a special device for holding or clamping anchor chain. It is fixed between the anchor windlass and the anchor chain barrel, separated from the anchor chain wheel, and bears the tension of the anchor and anchor chain when reeling in and mooring, so that it will not be transmitted to the anchor chain wheel. When sailing, the chain stopper will keep the anchor chain and anchor close to the hull to prevent the anchor from colliding with the hull. Commonly used chain stoppers include spiral chain stoppers, knife chain stoppers, tongue chain stoppers, cam chain stoppers, chain chain stoppers and roller knife chain stoppers.

[0003] The knife-type chain stopper in the prior art is usually as shown in the patent document, application number: CN202121272813.8. A ship anchoring chain stopper includes a chain stopper body, a base is provided at the lowermost position of the chain stopper body, a connecting plate is provided at the right side of the base, a roller is provided at the upper side of the connecting plate, a reel is provided at the middle position on the right side of the roller, a block is provided at the outer side of the reel, a rotating shaft is provided at the middle position of the reel, a knife is provided at the upper side of the roller, a notch is provided at the connecting position of the knife and the base, a handle is provided at the left side of the knife, a handle is provided at the right side of the knife, and a pin is provided at the middle position of the handle.

[0004] As mentioned above, the existing knife-type chain stoppers are generally equipped with a counterweight, and a handle is provided on the counterweight, and the knife is opened and closed by pulling or pushing the handle when in use. The existing roller knife-type chain stoppers use the counterweight to make the center of gravity of the knife deviate to the pin end hinged to the thrust plate, thereby reducing the force applied by the person on the handle end through the lever principle. However, as the diameter of the anchor chain increases, the volume of the chain stopper also increases, and the weight of the knife and counterweight required is also increasing. When closing the knife, the operator will have difficulty in pushing or even difficulty in pushing the knife. In summary, the counterweight in the prior art is an integral structure, and it is impossible to change the weight of the counterweight to cooperate with the opening or closing of the knife for labor-saving operation.

[0005] In view of the above, it is necessary to propose an adjustable chain stopper counterweight to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to solve the above technical problems and to provide an adjustable chain stopper counterweight.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an adjustable chain stopper balance hammer, including a vertical frame, a chain wheel, and a knife structure. The chain wheel is rotatably set on the vertical frame, and the knife structure is rotatably connected to the vertical frame. The knife structure includes a knife rod, a balance rod, and an adjustable counterweight structure. One end of the knife rod is hinged to the vertical frame, and the middle part of the knife rod is inserted into the vertical frame. The balance rod is extended in the opposite direction from the hinged end of the knife rod, and the end of the balance rod is provided with an adjustable counterweight structure.

[0008] Furthermore, the adjustable counterweight structure includes a mounting shell and a counterweight block. The mounting shell is cylindrical and fixedly connected to the end of the balance pole. The front and rear sides of the mounting shell are provided with sockets for installing the counterweight block. The counterweight block is inserted into the mounting shell through the sockets and connected.

[0009] Furthermore, the counterweight block includes a disc portion, a plug-in cone, and a handle. The disc portion is provided with a plug-in cone on one side and a handle on the other side. The end face of the plug-in cone is provided with a flat pin, and the length of the flat pin is greater than the diameter of the plug-in cone. The socket is provided with a limit ring and an annular groove from the outside to the inside, the limit ring matches the diameter of the plug-in cone, the diameter of the annular groove matches the length of the flat pin, and the limit ring is provided with a side opening for the flat pin to pass through; the inner bottom surface of the socket is provided with an elastic cushion layer.

[0010] Furthermore, the adjustable counterweight structure includes:

[0011] The frame body comprises a bottom plate, an upper plate, and a track arranged between the bottom plate and the upper plate for the sliding frame to slide;

[0012] A sliding frame, which is arranged on the track of the bracket so that its position can be slidably adjusted, and a sliding member is arranged in the sliding frame so as to move along the preset track;

[0013] A moving mechanism, which is arranged on the frame and connected to the sliding frame to drive the sliding frame to move along the track direction;

[0014] A swing rod is arranged along the extension direction of the track, one end of the swing rod is hinged to the bottom plate, and the other end passes through the sliding frame to cooperate with the sliding member inside the sliding frame;

[0015] An elastic member is arranged on the side of the sliding frame, one end of which is connected to the sliding frame, and the other end of which is connected to the sliding member, and the elastic member drives the sliding member to press against the swing rod;

[0016] One end of the steel cable is connected to the end of the swing rod, and the other end is connected to the end of the balance rod through the guide wheel. When the steel cable pulls the swing rod to swing, it needs to overcome the elastic force of the elastic member and push the sliding component to move within the preset track.

[0017] Furthermore, the frame body also includes a linear bearing rod arranged between the bottom plate and the upper plate, the sliding frame includes side plates arranged on both sides of the linear bearing rod, and a linear bearing sleeve matching the linear bearing rod is fixedly provided between the two side plates; the preset track is opened on the side plate, and the sliding member includes a sliding block, a sliding rod, and a roller. The sliding block is in a U-shape, and the opening side of the sliding block faces the rocker bar. The roller is rotatably connected inside the sliding block. Sliding rods are fixed on both sides of the sliding block. The sliding rods are placed in the preset track for sliding connection. An elastic member is provided on the outer wall of the side plate, and one end of the elastic member is rotatably connected to the side plate, and the other end is rotatably connected to the end of the sliding rod.

[0018] Furthermore, the swing rod is arranged close to one side of the linear bearing rod, the bottom plate is provided with a hinge seat, the lower end of the swing rod is hingedly connected in the hinge seat, so that the swing plane of the swing rod is parallel to the side plate, and the moving mechanism and the swing rod are respectively arranged close to the linear bearing rods on both sides.

[0019] Furthermore, the moving mechanism includes a ball screw, a screw nut, and a driving member. The ball screw is arranged parallel to the track, and the driving member is arranged on the base plate. One end of the ball screw is rotatably connected to the upper plate, and the other end is rotatably connected to the driving member. A screw nut is fixedly provided in the sliding frame, and the screw nut is sleeved on the ball screw. A handwheel is provided on one side of the driving member.

[0020] Furthermore, the preset track is in an arc shape, and when the sliding frame is located at the top dead center position, the center of the preset track coincides with the axis of the hinge seat.

[0021] Furthermore, the frame is provided with a plurality of fixed pulleys, the upper plate is fixedly provided with two fixed pulleys, the bottom plate is fixedly provided with a fixed pulley at one end close to the chain stopper, and the upper plate is provided with a through hole for the steel cable to pass through.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. If the installation space of the chain stopper is limited, the utility model optimizes the counterweight installed on the conventional chain stopper blade. By disassembling and assembling the detachable counterweight block when the blade is closed and opened, it saves manpower when opening and closing the blade. At the same time, it solves the problem of difficulty in closing the blade due to the excessive weight of the counterweight of conventional large chain stoppers, thereby improving work efficiency.

[0024] 2. If there is no restriction on the installation space of the chain stopper, the utility model will also eliminate the structural design of the counterweight block in the adjustable counterweight structure. This implementation method can achieve stepless adjustment of the counterweight end by changing the acceptance point of the rocker arm. The adjustment method is simple and can make the counterweight more precise. In addition, this structure does not use a counterweight block, which can avoid the manual labor of repeatedly moving the counterweight block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the structure of an adjustable chain stopper counterweight of the present application;

[0026] Figure 2 This is an axonometric view of the chain brake in the first embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the installation of the counterweight block in this application;

[0028] Figure 4 It is a schematic diagram of the structure of the installation shell in this application;

[0029] Figure 5 This is a schematic diagram of the adjustable counterweight structure of the second embodiment of the present application;

[0030] Figure 6 for Figure 5 The enlarged schematic diagram at A in the middle;

[0031] In the figure: 1, stand; 2, anchor chain wheel; 3, knife bar; 4, balance bar; 5, mounting shell; 6, counterweight; 7, disc; 8, plug-in round table; 9, handle; 10, straight pin; 11, limit ring; 12, annular groove; 13, side opening; 14, elastic cushion; 15, bottom plate; 16, upper plate; 17, rocker; 18, elastic member; 19, steel cable; 20, linear bearing rod; 21, side plate; 22, linear bearing sleeve; 23, sliding block; 24, sliding rod; 25, roller; 26, hinge seat; 27, ball screw; 28, screw nut; 29, driving member; 30, handwheel; 31, fixed pulley; 32, through hole; 33, preset track. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0033] An adjustable chain stopper counterweight, such as Figure 2As shown, it includes a stand 1, an anchor chain wheel 2, and a knife structure. The anchor chain wheel 2 is rotatably arranged on the stand 1, and the knife structure is rotatably connected to the stand 1. When the knife structure is closed on the stand 1, it forms a limiting structure for clamping the anchor chain from both sides with the anchor chain wheel 2. The knife structure includes a knife rod 3, a balance rod 4, and an adjustable counterweight structure. One end of the knife rod 3 is hinged to the stand 1, and the middle part of the knife rod 3 is inserted into the stand 1. The balance rod 4 is extended in the opposite direction from the hinged end of the knife rod 3. The end of the balance rod 4 is provided with an adjustable counterweight structure, as shown in the figure As shown, the balance bar 4 is set to be inclined at a certain angle upward. In actual use, when the end of the gate knife rod 3 is lifted and rotated along the axis, the force arm gradually increases with the rotation of the balance hammer, thereby playing a role in assisting in lifting the gate knife. However, when the gate knife is dropped, the balance hammer is in a state of larger force arm in the initial stage, so it takes more effort to press the gate knife rod 3. In this embodiment, the balance hammer is set as an adjustable counterweight structure, so that when opening and closing the gate knife rod 3, the effect of labor-saving opening or closing can be achieved by adding or reducing the counterweight block 6.

[0034] Specifically, Figure 2 , Figure 3 As shown, the adjustable counterweight structure includes a mounting shell 5 and a counterweight 6. The mounting shell 5 is cylindrical and fixedly connected to the end of the balance pole 4. The front and rear sides of the mounting shell 5 are provided with sockets for installing the counterweight 6. The counterweight 6 is inserted into the mounting shell 5 through the sockets and connected. The counterweight 6 includes a disc 7, a plug-in table 8, and a handle 9. The disc 7 is provided with a plug-in table 8 on one side and a handle 9 on the other side. The handle 9 is used to pick up the counterweight 6, and the plug-in table 8 is aligned with the socket and inserted for assembly. The positions of the two must also be locked. Specifically, a straight pin 10 is provided on the end face of the plug-in table 8. The length of the straight pin 10 is greater than the diameter of the plug-in table 8. The socket is provided with a limit ring 11 and an annular groove 12 from the outside to the inside. Figure 4 As shown; the limiting ring 11 matches the diameter of the plug-in cone 8, the diameter of the annular groove 12 matches the length of the flat pin 10, and the limiting ring 11 is provided with a side opening 13 for the flat pin 10 to pass through; the inner bottom surface of the socket is provided with an elastic cushion layer 14; in actual use, the entire counterweight 6 can be picked up by the handle 9. During installation, the flat pin 10 is aligned with the side opening 13 and inserted so that the flat pin 10 passes through the limiting ring 11 and enters the annular groove 12, and then the counterweight 6 is rotated, so that the limiting ring 11 blocks the flat pin 10, and the counterweight 6 is connected to the mounting shell 5. The elastic cushion layer 14 is set to fill the internal gap and increase the connection firmness. It can be understood that during the installation or removal process, the counterweight 6 needs to appropriately compress the elastic cushion layer 14 inwardly and then rotate it, so as to enhance the fixing effect and prevent the counterweight 6 from falling off due to vibration.

[0035] When the knife gate rod 3 is opened, it is necessary to increase the weight at the counterweight, align the square straight pin 10 of the counterweight 6 with the jack of the side opening 13 of the counterweight mounting shell 5, insert the counterweight 6 into the counterweight body, and squeeze the spring cushion layer after the straight pin 10 contacts the spring cushion layer to make it elastically deformed. After the counterweight 6 is fully inserted, the handle 9 is rotated clockwise for about 90 degrees and then released. At this time, the square straight pin 10 is tightly pressed on the limit ring 11 by the force generated by the elastic deformation of the spring layer, thereby ensuring that the counterweight 6 will not loosen and fall when the knife gate is opened, thereby reducing the manpower required for the counterweight to move down (open the knife gate); when the knife gate is closed, hold the handle 9, squeeze it inward with a little force and rotate the handle 9 counterclockwise for about 90 degrees. After the square straight pin 10 of the counterweight 6 is aligned with the side opening 13, the counterweight 6 is removed. At this time, it is easier to press down the knife gate rod 3, thereby reducing the manpower required for the counterweight to move up (close the knife gate). Embodiment 2

[0036] As another embodiment of the adjustable counterweight structure, Figure 1 This embodiment can be used in conjunction with the balance hammer in the first embodiment, or the balance hammer in the first embodiment can be removed and only this embodiment can be connected to the end of the balance rod 4.

[0037] Figure 5 As shown, the adjustable counterweight structure includes:

[0038] The frame body includes a bottom plate 15, an upper plate 16, and a track for the sliding frame to slide is arranged between the bottom plate 15 and the upper plate 16; the track can be a linear bearing rod 20 arranged between the bottom plate 15 and the upper plate 16, and a linear bearing sleeve 22 matched with the linear bearing rod 20 is arranged in the sliding frame;

[0039] The position of the sliding frame can be slidably adjusted on the track of the bracket, and a sliding member moving along the preset track 33 is arranged in the sliding frame; specifically, the sliding frame includes side plates 21 arranged on both sides of the linear bearing rod 20, and a linear bearing sleeve 22 matching the linear bearing rod 20 is fixedly arranged between the two side plates 21; the preset track 33 is opened on the side plate 21, and the preset track 33 is an opening in the shape of a long arc passing through the side plate 21, and the sliding member moves in the preset track 33, such as Figure 6 As shown, the sliding component includes a sliding block 23, a sliding rod 24, and a roller 25. The sliding block 23 is in a U-shape, with the open side of the sliding block 23 facing the rocker 17. The roller 25 is rotatably connected inside the sliding block 23. Sliding rods 24 are fixed on both sides of the sliding block 23. The sliding rods 24 are placed in a preset track 33 for sliding connection. Two sliding rods 24 are set on the side of the sliding block 23. The two sliding rods 24 are placed in the preset track 33 at the same time, which can keep the sliding block 23 stable during the sliding process and make the side where the roller 25 is set always face the rocker 17.

[0040] The outer wall of the side plate 21 is provided with an elastic member 18, such as Figure 5 As shown, the elastic member 18 in this embodiment is a hydraulic spring rod. In actual use, other alternative structures of similar nature can also be used. One end of the elastic member 18 is rotatably connected to the side plate 21, and the other end is rotatably connected to the end of the sliding rod 24. The elastic member 18 drives the sliding member to press against the rocker arm 17.

[0041] The swing rod 17 is arranged along the extension direction of the track, and the swing rod 17 is arranged close to one side of the linear bearing rod 20, so that the swing rod 17 has a larger space to swing between the two linear bearing rods 20. One end of the swing rod 17 is hinged to the base plate 15, and the base plate 15 is provided with a hinge seat 26. The lower end of the swing rod 17 is hingedly connected in the hinge seat 26, and the other end passes through the sliding frame and cooperates with the sliding member inside it; the swing plane of the swing rod 17 is parallel to the side plate 21, and the preset track 33 is in an arc shape. When the sliding frame is at the upper dead center, the center of the preset track 33 coincides with the axis of the hinge seat 26. In this way, when the sliding frame is at the upper dead center, within the rotation range of the swing rod 17, the swing rod 17 can always squeeze the roller 25 to avoid the swing rod 17 and the roller 25 from being dislocated.

[0042] The moving mechanism is arranged on the frame, and the moving mechanism is connected to the sliding frame to drive the sliding frame to move along the track direction; Figure 5 As shown, the moving mechanism and the swing rod 17 are respectively arranged near the linear bearing rods 20 on both sides. The moving mechanism is close to the linear bearing rod 20 on the left side, and the swing rod 17 is close to the linear bearing rod 20 on the right side, and the space between the two is the swing space of the swing rod 17. The moving mechanism includes a ball screw 27, a screw nut 28, and a driving member 29. The ball screw 27 is arranged parallel to the track, and the driving member 29 is arranged on the bottom plate 15. One end of the ball screw 27 is rotatably connected to the upper plate 16, and the other end is rotatably connected to the driving member 29. The sliding frame is fixed with a screw nut 28, which is sleeved on the ball screw 27, and a hand wheel 30 is arranged on one side of the driving member 29. In actual use, the ball screw 27 can be driven to rotate by turning the hand wheel 30, and then the screw nut 28 can be driven to move up and down, and the screw nut 28 can drive the sliding frame to move.

[0043] The steel cable 19 has one end connected to the end of the swing rod 17 and the other end connected to the end of the balance rod 4 through the guide wheel. When the steel cable 19 pulls the swing rod 17 to swing, it needs to overcome the elastic force of the elastic member 18 and push the sliding member to move within the preset track 33. Figure 1As shown, the frame is provided with a plurality of fixed pulleys 31, the upper plate 16 is fixedly provided with two fixed pulleys 31, the bottom plate 15 is fixedly provided with a fixed pulley 31 at one end near the chain stopper, and the upper plate 16 is provided with a through hole 32 for the steel cable 19 to pass through. One end of the steel cable 19 is fixedly connected to the upper end of the swing rod 17, and the steel cable 19 passes through the through hole 32 and bypasses the first fixed pulley 31 to the second fixed pulley 31 at the end of the upper plate 16, and then turns downward to bypass the third fixed pulley 31 provided on the bottom plate 15, and the other end is connected to the balance bar 4.

[0044] Taking the case where the balancing hammer in Example 1 is not set as an example, during actual use, the knife gate rod 3 is in the initial closed state of falling, and the swing rod 17 is pulled by the balance rod 4 and the steel cable 19 to push the sliding member and compress the elastic member 18. At this time, the elastic member 18 is used to complete the force storage; when the knife gate rod 3 needs to be opened, the knife gate rod 3 is unlocked first, and the thrust of the elastic member 18 pushes the sliding member to move and pushes the swing rod 17 to swing to the right, so that the swing rod 17 pulls the steel cable 19, and uses the guidance of the fixed pulley 31 to pull the balancing rod 4 downward, thereby assisting the opening of the knife gate rod 3 and achieving the purpose of labor-saving opening. It can be understood that in the above process, the position of the sliding frame can also be adjusted in conjunction with the use of the moving mechanism, and the direct effect of the adjustment is the up and down movement of the force application point of the roller 25 on the rocker rod 17, thereby changing the length of the force arm of the elastic member 18 acting on the rocker rod 17, thereby achieving the effect of stepless adjustment of the counterweight; it can be understood that in this embodiment, there is no need to repeatedly carry the counterweight block 6, nor is there any need to install and disassemble the counterweight block 6, thereby reducing the intensity of manual labor.

[0045] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable chain stopper counterweight, comprising a stand (1), a chain wheel (2), and a knife structure, wherein the chain wheel (2) is rotatably arranged on the stand (1), and the knife structure is rotatably connected to the stand (1), characterized in that: The knife gate structure comprises a knife gate rod (3), a balance rod (4), and an adjustable counterweight structure. One end of the knife gate rod (3) is hinged to the stand (1), the middle of the knife gate rod (3) is inserted into the stand (1), the balance rod (4) is extended in the opposite direction from the hinged end of the knife gate rod (3), and the adjustable counterweight structure is arranged at the end of the balance rod (4).

2. The adjustable chain stopper counterweight according to claim 1, characterized in that: The adjustable counterweight structure comprises a mounting shell (5) and a counterweight block (6); the mounting shell (5) is cylindrical and fixedly connected to the end of the balance pole (4); sockets for mounting the counterweight block (6) are provided on the front and rear sides of the mounting shell (5); the counterweight block (6) is inserted into the mounting shell (5) through the sockets and connected.

3. The adjustable chain stopper counterweight according to claim 2, characterized in that: The counterweight (6) comprises a disc portion (7), a plug-in round table (8), and a handle (9). The disc portion (7) is provided with a plug-in round table (8) on one side and a handle (9) on the other side. The end surface of the plug-in round table (8) is provided with a straight pin (10). The length of the straight pin (10) is greater than the diameter of the plug-in round table (8). The socket is provided with a limiting ring (11) and an annular groove (12) from the outside to the inside. The limiting ring (11) matches the diameter of the plug-in round table (8). The diameter of the annular groove (12) matches the length of the straight pin (10). The limiting ring (11) is provided with a side opening (13) for the straight pin (10) to pass through. The inner bottom surface of the socket is provided with an elastic cushion layer (14).

4. The adjustable chain stopper counterweight according to claim 1, characterized in that: The adjustable counterweight structure comprises: The frame body comprises a bottom plate (15), an upper plate (16), and a track for the sliding frame to slide, which is arranged between the bottom plate (15) and the upper plate (16); A sliding frame, the position of which can be slidably adjusted and arranged on the track of the bracket, wherein a sliding member is arranged in the sliding frame and moves along a preset track (33); A moving mechanism, which is arranged on the frame and connected to the sliding frame to drive the sliding frame to move along the track direction; A swing rod (17) is arranged along the extension direction of the track, one end of the swing rod (17) is hinged to the bottom plate (15), and the other end passes through the sliding frame to cooperate with the sliding member inside the sliding frame; An elastic member (18) is arranged on the side of the sliding frame, one end of which is connected to the sliding frame, and the other end of which is connected to the sliding member, and the elastic member (18) drives the sliding member to press against the swing rod (17); A steel cable (19) has one end connected to the end of the swing rod (17) and the other end connected to the end of the balance rod (4) via a guide wheel. When the steel cable (19) pulls the swing rod (17) to swing, it needs to overcome the elastic force of the elastic member (18) and push the sliding member to move within the preset track (33).

5. The adjustable chain stopper counterweight according to claim 4, characterized in that: The frame body also includes a linear bearing rod (20) arranged between the bottom plate (15) and the upper plate (16); the sliding frame includes side plates (21) arranged on both sides of the linear bearing rod (20); a linear bearing sleeve (22) matched with the linear bearing rod (20) is fixedly arranged between the two side plates (21); the preset track (33) is opened on the side plate (21); the sliding member includes a sliding block (23), a sliding rod (24), and a roller (25); the sliding block (23) is in a U-shape, the opening side of the sliding block (23) faces the swing rod (17); the roller (25) is rotatably connected inside the sliding block (23); sliding rods (24) are fixedly arranged on both sides of the sliding block (23); the sliding rods (24) are placed in the preset track (33) for sliding connection; and elastic members (18) are arranged on the outer walls of the side plates (21).

6. The adjustable chain stopper counterweight according to claim 5, characterized in that: The swing rod (17) is arranged close to one side linear bearing rod (20), the bottom plate (15) is provided with a hinge seat (26), the lower end of the swing rod (17) is hingedly connected in the hinge seat (26), so that the swing plane of the swing rod (17) is parallel to the side plate (21), and the moving mechanism and the swing rod (17) are respectively arranged close to the linear bearing rods (20) on both sides.

7. An adjustable chain stopper counterweight according to any one of claims 4 to 6, characterized in that: The moving mechanism comprises a ball screw (27), a screw nut (28), and a driving member (29); the ball screw (27) is arranged parallel to the track; the driving member (29) is arranged on the bottom plate (15); one end of the ball screw (27) is rotatably connected to the upper plate (16); the other end is rotatably connected to the driving member (29); a screw nut (28) is fixedly arranged in the sliding frame; the screw nut (28) is sleeved on the ball screw (27); and a hand wheel (30) is arranged on one side of the driving member (29).

8. The adjustable chain stopper counterweight according to claim 6, characterized in that: The preset track (33) is in the shape of an arc, and when the sliding frame is located at the top dead center position, the center of the preset track (33) coincides with the axis of the hinge seat (26).

9. The adjustable chain stopper counterweight according to claim 4, characterized in that: The frame is provided with a plurality of fixed pulleys (31), the upper plate (16) is fixedly provided with two fixed pulleys (31), a fixed pulley (31) is fixedly provided at one end of the bottom plate (15) close to the chain stopper, and the upper plate (16) is provided with a through hole (32) for the steel cable (19) to pass through.

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