A balancing connecting rod device

Abstract

The present invention relates to the technical field of connecting rod devices, and in particular to a balancing connecting rod device. The balancing connecting rod device provided by the present invention is provided with a first pull rod of a first balancing connecting rod assembly being movably connected with a first connecting plate and a first balancing plate, a second pull rod of a second balancing connecting rod assembly being movably connected with a second connecting plate and a second balancing plate, and a movable connecting rod being movably connected between the first balancing plate and the second balancing plate, and the above-mentioned movably connected connected parts can rotate around a connection point, when the lengths of a plurality of suspension ropes connected to the first connecting plate or the second connecting plate are the same, the various parts of the balancing connecting rod device do not rotate with each other and are in a balanced state, when the balanced state is broken, the various parts of the balancing connecting rod device rotate around the connection point, so that the balancing connecting rod device reaches a new balanced state again, ensuring that the forces on the plurality of suspension ropes are uniform, avoiding the situation where a single suspension rope is stressed and causes the suspension rope to break, thereby improving safety.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting rod devices, and in particular to a balancing connecting rod device. Background Art

[0002] In industry, it is often necessary to use steel wire ropes to pull heavy objects up and down. When the heavy object is too heavy, the pulling force required to lift the heavy object exceeds the breaking force of a single steel wire rope, and multiple steel wire ropes are needed to pull the heavy object together. In actual situations, multiple steel wire ropes are usually directly connected to the heavy object. However, the method of directly connecting multiple steel wire ropes to the heavy object has certain disadvantages: if the length of one of the ropes is inconsistent with the length of other ropes due to reasons such as skipping, it will cause uneven force between the multiple steel wire ropes. The weight of the entire heavy object is borne by a relatively short rope, and there is a high risk of rope breaking. When the rope breaks, the force on the heavy object changes. As a result, the change in the posture of the heavy object will make the remaining steel wire ropes of different lengths, resulting in uneven force on the remaining steel wire ropes, and there is a risk of all steel wire ropes breaking. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that multiple suspension ropes directly connected to heavy objects are prone to force imbalance, thereby providing a balancing connecting rod device that ensures the force balance of the multiple suspension ropes.

[0004] In order to solve the above technical problems, the present invention provides a balancing connecting rod device, comprising:

[0005] A first balancing link assembly, the first balancing link assembly comprising a first connecting plate, a first balancing plate, and a first pull rod movably connected between the first connecting plate and the first balancing plate, wherein the first connecting plate is provided with at least two first connection points suitable for connecting with a suspension rope;

[0006] A second balancing link assembly, the second balancing link assembly comprising a second connecting plate, a second balancing plate, and a second pull rod movably connected between the second connecting plate and the second balancing plate, wherein the second connecting plate is provided with at least two second connection points suitable for connecting with a suspension rope;

[0007] A movable connecting rod, movably connected between the first balancing plate and the second balancing plate, wherein the first balancing plate and the second balancing plate are respectively provided with connecting rod connection points;

[0008] The first balance board and the second balance board are also respectively provided with a pull rod connection point and a counterweight connection point suitable for connecting with a heavy object, and the counterweight connection point, the connecting rod connection point and the pull rod connection point are not on a straight line.

[0009] Optionally, a connection point between the first pull rod and the first connecting plate and a line connecting two of the first connecting points are arranged in a triangle, and a connection point between the second pull rod and the second connecting plate and a line connecting two of the second connecting points are arranged in a triangle.

[0010] Optionally, in an initial equilibrium state, the connecting rod connection point is higher than the counterweight connection point and the pull rod connection point, and the counterweight connection point and the pull rod connection point are on the same horizontal line.

[0011] Optionally, the balancing linkage device further includes: a connecting member, one end of which is rotatably connected to the first connecting plate or the second connecting plate, and the other end of which is connected to the suspension rope.

[0012] Optionally, an open groove for accommodating the first connecting plate or the second connecting plate is provided at the lower end of the connecting member, and a connecting hole is provided on the open groove;

[0013] The upper end of the first connecting plate or the second connecting plate is placed in the open groove, and the connecting shaft passes through the connecting holes on the open groove and the first connecting plate or the second connecting plate in sequence to realize the hinged connection between the first connecting plate and the second connecting plate and the connecting piece.

[0014] Optionally, the first pull rod and the first connecting plate and the first balancing plate, the second pull rod and the second connecting plate and the second balancing plate, and the movable link and the first balancing plate and the second balancing plate are all connected and fixed by hinged means.

[0015] Optionally, the weight is hingedly fixed on the first balance board and the second balance board.

[0016] Optionally, the first balance board and the second balance board both include a counterweight connection portion, and a first protrusion and a second protrusion extending outward at a set angle with the counterweight connection portion as the center, and an end of the first protrusion is higher than the second protrusion;

[0017] The counterweight connecting portion is suitable for connecting to the weight, the first protrusion is suitable for connecting to the movable connecting rod, and the second protrusion is suitable for connecting to the first pull rod or the second pull rod.

[0018] Optionally, the first pull rod includes a first vertical rod and a second vertical rod that are arranged opposite to each other, and the lower end of the first connecting plate is placed between the first vertical rod and the second vertical rod;

[0019] The first vertical rod and the second vertical rod are provided with connecting holes, and the first pull rod and the first connecting plate are rotatably connected by a rotating shaft passing through the connecting hole on the first vertical rod, the first connecting plate, and the connecting hole on the second vertical rod in sequence;

[0020] The second pull rod comprises a third vertical rod and a fourth vertical rod which are arranged opposite to each other, and the lower end of the second connecting plate is placed between the third vertical rod and the fourth vertical rod;

[0021] The third vertical rod and the fourth vertical rod are provided with connecting holes, and the second pull rod and the second connecting plate are rotatably connected by the rotating shaft passing through the connecting hole on the third vertical rod, the second connecting plate and the connecting hole on the fourth vertical rod in sequence.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. The balancing link device provided by the present invention is provided with a first pull rod of a first balancing link assembly movably connected with a first connecting plate and a first balancing plate, a second pull rod of a second balancing link assembly movably connected with a second connecting plate and a second balancing plate, and a movable link movably connected between the first balancing plate and the second balancing plate. The first balancing link assembly and the second balancing link assembly have the same structure to ensure force balance, and the movable connection between the above-mentioned connected components enables the connected components to rotate around a connection point. When the lengths of a plurality of suspension ropes connected to the first connecting plate or the second connecting plate are the same, the components of the balancing link device do not rotate with each other and are in a balanced state. When the suspension rope jumps or breaks and causes the balanced state to be broken, the components of the balancing link device rotate around the connection point, so that the balancing link device reaches a new balanced state again, ensuring that the forces on the plurality of suspension ropes subjected to force in the new balanced state are uniform, avoiding the situation where a single suspension rope is subjected to force and causes the suspension rope to break, thereby improving safety and avoiding major safety accidents.

[0024] 2. The balancing connecting rod device provided by the present invention forms a triangle by arranging the connection point between the first pull rod and the first connecting plate and the line connecting the two first connecting points, wherein the two first connecting points are respectively connected to one of the suspension ropes. The triangular arrangement of the three connection points increases the stability of the force, thereby ensuring the reliability of the overall structure. Similarly, the connection point between the second pull rod and the second connecting plate and the line connecting the two second connecting points form a triangle, further enhancing the stability of the force and the reliability of the overall structure.

[0025] 3. The balancing linkage device provided by the present invention is connected to the first connecting plate or the second connecting plate by one end of the connecting piece and connected to the sling rope by the other end, so that the sling rope is connected to the first connecting plate or the second connecting plate via the connecting piece, and the connection between the connecting piece and the first connecting plate or the second connecting plate is a rotational connection, thereby ensuring that when the first connecting plate or the second connecting plate and the connecting piece rotate relative to each other, the connecting piece can always be maintained in a vertical direction under the tension of the sling rope, thereby ensuring that the connection force point between the connecting piece and the first connecting plate or the second connecting plate always coincides with the sling rope in the vertical direction, thereby ensuring the stability of the force applied to the sling rope.

[0026] 4. The balancing connecting rod device provided by the present invention realizes hinged connection between the first connecting plate or the second connecting plate and the connecting member by setting an open groove at the lower end of the connecting member, and sequentially passing through the connecting hole on the open groove and the first connecting plate or the second connecting plate placed in the open groove through a connecting shaft. The positional relationship of the upper end of the first connecting plate or the second connecting plate placed in the open groove enhances the stability of the connection, and the hinged connection mode between the connecting member and the first connecting plate or the second connecting plate ensures that the connecting member and the first connecting plate or the second connecting plate can rotate relative to each other, thereby ensuring the overall reliability of the device.

[0027] 5. The balancing connecting rod device provided by the present invention comprises two vertical rods arranged opposite to each other by setting a pull rod, a connecting plate is arranged between the two vertical rods, and a rotating shaft passes through the two vertical rods and the connecting plate, so that the connecting plate is rotatably connected to the two vertical rods through the rotating shaft. While the connecting plate is connected to the two vertical rods located on both sides of the connecting plate, it is ensured that the connecting plate and the two vertical rods can rotate relative to each other, thereby ensuring the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a front view of the balancing connecting rod device of the present invention connected to a weight;

[0030] Figure 2 It is a side view of the balancing connecting rod device of the present invention connected to a weight.

[0031] Description of reference numerals:

[0032] 1. Lifting rope; 2. Connecting piece; 21. Opening slot; 31. First connecting plate; 32. Second connecting plate; 41. First pull rod; 411. First vertical rod; 412. Second vertical rod; 42. Second pull rod; 5. Movable connecting rod; 61. First balance plate; 62. Second balance plate; 7. Weight. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Combination Figure 1-Figure 2 As shown, the balancing connecting rod device provided in this embodiment includes:

[0038] A first balancing link assembly, the first balancing link assembly comprising a first connecting plate 31, a first balancing plate 61, and a first pull rod 41 movably connected between the first connecting plate 31 and the first balancing plate 61, wherein the first connecting plate 31 is provided with at least two first connection points suitable for connecting with the suspension rope 1;

[0039] A second balancing link assembly, the second balancing link assembly comprising a second connecting plate 32, a second balancing plate 62, and a second pull rod 42 movably connected between the second connecting plate 32 and the second balancing plate 62, wherein the second connecting plate 32 is provided with at least two second connection points suitable for connecting with the suspension rope 1;

[0040] A movable connecting rod 5, movably connected between the first balancing plate 61 and the second balancing plate 62, wherein the first balancing plate 61 and the second balancing plate 62 are respectively provided with connecting rod connection points;

[0041] The first balance board 61 and the second balance board 62 are also respectively provided with a pull rod connection point and a counterweight connection point suitable for connecting with the weight 7, and the counterweight connection point, the connecting rod connection point and the pull rod connection point are not on a straight line.

[0042] Optionally, the suspension rope 1 is a steel wire rope.

[0043] Optionally, the movable connection is a rotational connection or a rotary connection.

[0044] It should be noted that the balancing link device provided in this embodiment is used in places where a sling rope is required to pull a heavy object up and down. The upper end of the balancing link device is fixedly connected to the sling rope 1, and the lower end is connected to the heavy object 7, wherein the upper end and the lower end refer to Figure 1 The first balancing plate 61 or the second balancing plate 62 is connected to the movable connecting rod 5 through the connecting rod connection point, connected to the pull rod through the pull rod connection point, and connected to the weight 7 through the counterweight connection point, wherein the pull rod refers to the first pull rod 41 or the second pull rod 42; when the lengths of the multiple suspension ropes 1 are equal, the gravity of the weight 7 is evenly distributed to the multiple suspension ropes 1, the balancing connecting rod device is in a balanced state, and there is no relative rotation between the various components. The first connection point on the first connecting plate 31 The second connection points on the second connecting plate 32 are all located on the same horizontal plane, the connection points of the first connecting plate 31 and the first pull rod 41, and the connection points of the second connecting plate 32 and the second pull rod 42 are located on the same horizontal plane, the pull rod connection point on the first balance plate 61, the counterweight connection point on the first balance plate 61, the pull rod connection point on the second balance plate 62, and the counterweight connection point on the second balance plate 62 are located on the same horizontal plane, and the connecting rod connection point on the first balance plate 61 and the connecting rod connection point on the second balance plate 62 are located on the same horizontal plane.

[0045] It should be noted that when the length of one of the plurality of suspension ropes 1 is shorter than the other suspension ropes, the length of the suspension rope 1 refers to the vertical distance from the connection point of the suspension rope 1 connected to the connector 2 to the extension point of the suspension rope 1 of the external device extending the suspension rope 1, and the vertical distance refers to the vertical distance along the Figure 1The distance in the up-down direction indicated by the middle arrow, if the balancing linkage device of the present embodiment is not used, but the connection method of directly connecting the suspension rope and the counterweight is directly adopted, the shorter suspension rope 1 will bear the entire weight of the weight 7. If the weight of the weight 7 exceeds the maximum tension that the suspension rope 1 can withstand, the suspension rope 1 will be broken. After the suspension rope is broken, the weight of the weight 7 is borne by the remaining suspension ropes. The counterweight is prone to change the length of the remaining suspension ropes to be inconsistent due to shaking and other reasons, which in turn causes uneven force on the remaining suspension ropes, causing a relatively shorter suspension rope among the remaining suspension ropes to break, thereby posing a risk of all suspension ropes breaking. If the balancing linkage device of the present embodiment is used, The above risks can be avoided, and an example is given in which a rope connected to the first connecting plate 31 is shorter than the other ropes: the shorter rope 1 pulls the first connection point connected to the rope upward through the connecting member 2, and the first connecting plate 31 pulls the pull rod connection point of the first balance plate 61 upward through the first pull rod 41, wherein the first balance plate 61 realizes the upward movement of the pull rod connection point of the first balance plate 61 by rotating around its counterweight connection point to compensate for the length of the rope 1, ensuring that the distance between the rope 1 and the connection point connected to the connecting member 2 and the counterweight connection point of the first balance plate 61 increases, so as to ensure that the rope 1 is extended from the extension point to the weight. The vertical distance of the first balancing plate 61 from the connecting rod 5 to the weight 7 is equal to the vertical distance of other suspending ropes from the extending point to the weight 7, thereby ensuring that the posture of the weight 7 does not change. During this process, the connecting rod connection point of the first balancing plate 61 moves downward, and the movable connecting rod 5 rotates relative to the first balancing plate 61 and the second balancing plate 62. The connecting rod connection point of the movable connecting rod 5 connected to the first balancing plate 61 is lower than the connecting rod connection point of the movable connecting rod 5 connected to the second balancing plate 62, and then a new balance is reached. The gravity of the weight 7 is redistributed to the multiple suspending ropes 1. At this time, the resultant force of the suspending ropes connected to the first connecting plate 31 is equal to the resultant force of the suspending ropes connected to the second connecting plate 32. The force exerted on the shorter rope is only slightly greater than the force exerted on the initial state, thereby avoiding the situation where a single rope 1 is subjected to a large force while other ropes are not subjected to force, thereby preventing the ropes from breaking due to excessive force. Taking the breakage of a rope having two first connection points provided on the first connecting plate 31 and connected to the first connecting plate 31 as an example, when the rope breaks, there is still one rope left on the first connecting plate 31 subjected to force. Under the action of the gravity of the weight, the three connection points of the remaining rope and the first connecting plate 31, the first connecting plate 31 and the first pull rod 41, and the first pull rod 41 and the first balance plate 61 are in a straight line. Figure 1The vertical straight line in the up-down direction indicated by the middle arrow, at this time, the vertical distance from the extension point of the remaining one suspension rope on the first connecting plate 31 to the pull rod connection point of the first balance plate 61 is greater than the vertical distance from the extension point of the two suspension ropes connected to the second connecting plate 32 to the pull rod connection point of the second balance plate 62, then the vertical distance from the extension point of the suspension rope provided by the remaining one suspension rope to the weight 7 is greater than the vertical distance from the extension point of the two suspension ropes connected to the second connecting plate 32 to the weight 7, that is, the two suspension ropes connected to the second connecting plate 32 is the shorter one among all the suspension ropes. At this time, in order to achieve a new balance, the components of the second balancing link assembly rotate relatively. Under the action of the two suspension ropes connected to the second connecting plate 32, the second connection point moves upward relative to the counterweight connection point of the second balancing plate 62. The second connecting plate 32 pulls the rod connection point of the second balancing plate 62 upward relative to its counterweight connection point through the second pull rod 42. The second balancing plate 62 realizes the upward movement of its rod connection point by rotating around its counterweight connection point. To compensate for the length of the two suspension ropes connected to the second connecting plate 32, ensure that the distance from the connection point of the suspension ropes connected to the connecting member 2 to the counterweight connection point of the second balancing plate 62 is increased, so as to ensure that the vertical distance from the extension point of the two suspension ropes to the weight 7 is equal to the vertical distance from the extension point of the remaining suspension ropes on the first connecting plate 31 to the weight 7, thereby ensuring that the weight 7 does not deflect, the resultant force received by the first balancing link assembly is equal to the resultant force received by the second balancing link assembly, and the forces of multiple suspension ropes reach a new balanced state. At this time, the tension carried by the remaining rope on the first connecting plate 31 is approximately twice the tension carried before the rope breaks, and usually does not exceed the breaking force of the rope, and the rope will not break. Optionally, when the rope is a steel wire rope, the breaking force of the steel wire rope is generally greater than six times the normal force, and there is a certain safety margin. Even if a single rope is subjected to approximately twice the force, the steel wire rope will not be immediately damaged and broken, thereby ensuring the safety of the system. Therefore, even if the rope breaks, the balancing linkage device provided in this embodiment can protect the system and avoid major safety accidents.

[0046] The balancing link device provided in the present embodiment is provided with a first pull rod 41 of the first balancing link assembly movably connected with the first connecting plate 31 and the first balancing plate 61, a second pull rod 42 of the second balancing link assembly movably connected with the second connecting plate 32 and the second balancing plate 62, and a movable link 5 movably connected between the first balancing plate 61 and the second balancing plate 62. The first balancing link assembly and the second balancing link assembly have the same structure to ensure the balance of force, and the movable connection between the above-mentioned connected components enables the connected components to rotate around the connection point. When the lengths of the multiple suspension ropes 1 connected to the first connecting plate 31 or the second connecting plate 32 are the same, there is no mutual rotation between the components of the balancing link device and they are in a balanced state. When the suspension rope jumps or breaks and the balanced state is broken, the components of the balancing link device rotate around the connection point, so that the balancing link device reaches a new balanced state again, ensuring that the force on the multiple suspension ropes subjected to force in the new balanced state is uniform, avoiding the situation where a single suspension rope is subjected to force and causes the suspension rope to break, thereby improving safety and avoiding major safety accidents.

[0047] Specifically, the connection point between the first pull rod 41 and the first connecting plate 31 and the line connecting the two first connecting points are arranged in a triangle, and the connection point between the second pull rod 42 and the second connecting plate 32 and the line connecting the two second connecting points are arranged in a triangle.

[0048] The balancing linkage device provided in this embodiment forms a triangle by arranging the connection point between the first pull rod 41 and the first connecting plate 31 and the line connecting the two first connection points, wherein the two first connection points are respectively connected to one of the suspension ropes 1. The triangular arrangement of the three connection points increases the stability of the force, thereby ensuring the reliability of the overall structure. Similarly, the connection point between the second pull rod 42 and the second connecting plate 32 and the line connecting the two second connection points form a triangle, further enhancing the stability of the force and the reliability of the overall structure.

[0049] Specifically, in an initial equilibrium state, the connecting rod connection point is higher than the counterweight connection point and the pull rod connection point, and the counterweight connection point and the pull rod connection point are on the same horizontal line.

[0050] It should be noted that the initial equilibrium state refers to a state in which the multiple suspension ropes 1 connected to the balancing linkage device are of equal length and balanced force when no rope breakage or rope length change occurs, and there is no mutual rotation between the components of the balancing linkage device.

[0051] Specifically, the balancing linkage device further includes: a connecting member 2 , one end of which is rotatably connected to the first connecting plate 31 or the second connecting plate 32 , and the other end of which is connected to the suspension rope 1 .

[0052] Optionally, the connecting member 2 is a steel wire rope knot, suitable for connecting the steel wire rope and the first connecting plate 31 or the second connecting plate 32 .

[0053] The balancing connecting rod device provided in this embodiment is connected to the first connecting plate 31 or the second connecting plate 32 by one end of the connecting member 2 and connected to the sling 1 by the other end, so that the sling 1 is connected to the first connecting plate 31 or the second connecting plate 32 via the connecting member 2, and the connection between the connecting member 2 and the first connecting plate 31 or the second connecting plate 32 is a rotational connection, thereby ensuring that when the first connecting plate 31 or the second connecting plate 32 and the connecting member 2 rotate relative to each other, the connecting member 2 can always remain in the vertical direction under the tension of the sling 1, thereby ensuring that the connection force point between the connecting member 2 and the first connecting plate 31 or the second connecting plate 32 always coincides with the sling 1 in the vertical direction, ensuring the stability of the force on the sling 1, wherein the vertical direction refers to Figure 1 The arrow in the middle points to the up and down directions.

[0054] Specifically, the lower end of the connecting member 2 is provided with an open slot 21 for accommodating the first connecting plate 31 or the second connecting plate 32, and the open slot 21 is provided with a connecting hole;

[0055] The upper end of the first connecting plate 31 or the second connecting plate 32 is placed in the open groove 21, and the connecting shaft passes through the connecting holes on the open groove 21 and the first connecting plate 31 or the second connecting plate 32 in sequence to realize the hinged connection between the first connecting plate 31 and the second connecting plate 32 and the connecting member 2.

[0056] The balancing connecting rod device provided in this embodiment is realized by setting an open groove 21 at the lower end of the connecting member 2, and sequentially passing the connecting hole on the open groove 21 and the first connecting plate 31 or the second connecting plate 32 placed in the open groove 21 through a connecting shaft, so as to realize the hinged connection between the first connecting plate 31 or the second connecting plate 32 and the connecting member 2. The positional relationship in which the upper end of the first connecting plate 31 or the second connecting plate 32 is placed in the open groove 21 enhances the stability of the connection, and the hinged connection mode between the connecting member 2 and the first connecting plate 31 or the second connecting plate 32 ensures that the connecting member 2 and the first connecting plate 31 or the second connecting plate 32 can rotate relative to each other, thereby ensuring the overall reliability of the device.

[0057] Specifically, the first pull rod 41 and the first connecting plate 31 and the first balancing plate 61, the second pull rod 42 and the second connecting plate 32 and the second balancing plate 62, and the movable link 5 and the first balancing plate 61 and the second balancing plate 62 are all connected and fixed by hinges.

[0058] It should be noted that the components are connected and fixed by hinged means to ensure that the two connected components can rotate relative to each other.

[0059] Optionally, the first pull rod 41 and the first connecting plate 31 and the first balance plate 61, the second pull rod 42 and the second connecting plate 32 and the second balance plate 62, and the movable connecting rod 5 and the first balance plate 61 and the second balance plate 62 are connected by bolts. It should be noted that at this time, the diameter of the bolt hole on each component for passing the bolt is larger than the outer diameter of the bolt to ensure that the bolt can rotate freely in the bolt hole, thereby realizing the mutual rotation between the two connected components.

[0060] Specifically, the weight 7 is hingedly fixed on the first balance board 61 and the second balance board 62 .

[0061] Specifically, the first balance plate 61 and the second balance plate 62 each include a counterweight connection portion, and a first protrusion and a second protrusion extending outward at a set angle with the counterweight connection portion as the center, and an end of the first protrusion is higher than the second protrusion;

[0062] The counterweight connection portion is suitable for connecting to the weight 7 , the first protrusion is suitable for connecting to the movable connecting rod 5 , and the second protrusion is suitable for connecting to the first pull rod 41 or the second pull rod 42 .

[0063] It should be noted that the end of the first protrusion is higher than the second protrusion means that when the balancing link device is in a balanced state, the end of the first protrusion is located above the second protrusion, wherein the above refers to Figure 1 The arrow in the middle points to the direction “up”.

[0064] Specifically, the first pull rod 41 includes a first vertical rod 411 and a second vertical rod 412 that are arranged opposite to each other, and the lower end of the first connecting plate 31 is placed between the first vertical rod 411 and the second vertical rod 412;

[0065] The first vertical rod 411 and the second vertical rod 412 are provided with connection holes, and the first pull rod 41 is rotatably connected to the first connection plate 31 by a rotating shaft passing through the connection hole on the first vertical rod 411, the first connection plate 31, and the connection hole on the second vertical rod 412 in sequence;

[0066] The second pull rod 42 includes a third vertical rod and a fourth vertical rod that are arranged opposite to each other, and the lower end of the second connecting plate 32 is placed between the third vertical rod and the fourth vertical rod;

[0067] The third vertical rod and the fourth vertical rod are provided with connecting holes, and the second pull rod 42 and the second connecting plate 32 are rotatably connected by the rotating shaft passing through the connecting hole on the third vertical rod, the second connecting plate 32 and the connecting hole on the fourth vertical rod in sequence.

[0068] The balancing connecting rod device provided in the present embodiment comprises two vertical rods arranged opposite to each other by setting a pull rod, a connecting plate is arranged between the two vertical rods, and a rotating shaft passes through the two vertical rods and the connecting plate, so that the connecting plate is rotatably connected to the two vertical rods through the rotating shaft, and while the connecting plate is connected to the two vertical rods located on both sides of the connecting plate, it is ensured that the connecting plate and the two vertical rods can rotate relative to each other, thereby ensuring the stability and reliability of the connection. It should be noted that the pull rod refers to the first pull rod 41 or the second pull rod 42, and the structures of the first pull rod 41 and the second pull rod 42 are exactly the same, and the two vertical rods arranged opposite to each other refer to the first vertical rod 411 and the second vertical rod 412 or the third vertical rod and the fourth vertical rod; the "lower end" refers to Figure 1 The arrow in the middle points to the "down" direction.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A balancing connecting rod device, characterized in that: include: A first balancing link assembly, the first balancing link assembly comprising a first connecting plate (31), a first balancing plate (61), and a first pull rod (41) movably connected between the first connecting plate (31) and the first balancing plate (61), wherein the first connecting plate (31) is provided with at least two first connection points suitable for connecting with the suspension rope (1); A second balancing link assembly, the second balancing link assembly comprising a second connecting plate (32), a second balancing plate (62), and a second pull rod (42) movably connected between the second connecting plate (32) and the second balancing plate (62), wherein the second connecting plate (32) is provided with at least two second connection points suitable for connecting with the suspension rope (1); A movable connecting rod (5) movably connected between the first balancing plate (61) and the second balancing plate (62), wherein the first balancing plate (61) and the second balancing plate (62) are respectively provided with connecting rod connection points; The first balance board (61) and the second balance board (62) are also respectively provided with a pull rod connection point and a counterweight connection point suitable for connecting to a weight (7), and the counterweight connection point, the connecting rod connection point and the pull rod connection point are not on a straight line; The first balance plate (61) and the second balance plate (62) both comprise a counterweight connection portion, and a first protrusion and a second protrusion extending outward at a set angle with the counterweight connection portion as the center, wherein the end of the first protrusion is higher than the second protrusion; The counterweight connecting portion is suitable for connecting to the weight (7), the first protrusion is suitable for connecting to the movable connecting rod (5), and the second protrusion is suitable for connecting to the first pull rod (41) or the second pull rod (42).

2. The balancing linkage device according to claim 1, characterized in that: The connection point between the first pull rod (41) and the first connecting plate (31) and the line connecting the two first connecting points are arranged in a triangle, and the connection point between the second pull rod (42) and the second connecting plate (32) and the line connecting the two second connecting points are arranged in a triangle.

3. The balancing linkage device according to claim 1, characterized in that: In an initial equilibrium state, the connecting rod connection point is higher than the counterweight connection point and the pull rod connection point, and the counterweight connection point and the pull rod connection point are on the same horizontal line.

4. The balancing linkage device according to claim 1, characterized in that: Also includes: A connecting member (2), one end of which is rotatably connected to the first connecting plate (31) or the second connecting plate (32), and the other end of which is connected to the suspension rope (1).

5. The balancing linkage device according to claim 4, characterized in that: The lower end of the connecting member (2) is provided with an open groove (21) for accommodating the first connecting plate (31) or the second connecting plate (32), and the open groove (21) is provided with a connecting hole; The upper end of the first connecting plate (31) or the second connecting plate (32) is placed in the open groove (21), and a connecting shaft passes through the connecting hole on the open groove (21) and the first connecting plate (31) or the second connecting plate (32) in sequence, so as to realize the hinged connection between the first connecting plate (31) and the second connecting plate (32) and the connecting member (2).

6. The balancing linkage device according to claim 1, characterized in that: The first pull rod (41) and the first connecting plate (31) and the first balancing plate (61), the second pull rod (42) and the second connecting plate (32) and the second balancing plate (62), and the movable connecting rod (5) and the first balancing plate (61) and the second balancing plate (62) are all connected and fixed by means of hinges.

7. The balancing linkage device according to claim 1, characterized in that: The weight (7) is hingedly fixed on the first balance board (61) and the second balance board (62).

8. The balancing linkage device according to any one of claims 1 to 7, characterized in that: The first pull rod (41) comprises a first vertical rod (411) and a second vertical rod (412) which are arranged opposite to each other, and the lower end of the first connecting plate (31) is placed between the first vertical rod (411) and the second vertical rod (412); The first vertical rod (411) and the second vertical rod (412) are provided with connection holes, and the first pull rod (41) and the first connecting plate (31) are rotatably connected by a rotating shaft passing through the connection hole on the first vertical rod (411), the first connecting plate (31), and the connection hole on the second vertical rod (412) in sequence; The second pull rod (42) comprises a third vertical rod and a fourth vertical rod which are arranged opposite to each other, and the lower end of the second connecting plate (32) is placed between the third vertical rod and the fourth vertical rod; The third vertical rod and the fourth vertical rod are provided with connecting holes, and the second pull rod (42) and the second connecting plate (32) are rotatably connected by a rotating shaft that passes through the connecting hole on the third vertical rod, the second connecting plate (32), and the connecting hole on the fourth vertical rod in sequence.

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