A balanced protection system for tower crane

Abstract

A balanced protection system for a tower crane. When a tower crane has a large deflection amplitude due to external influences during use, there is a lack of timely and effective protection measures. In the present invention, the inner hole of the connecting sleeve is a square hole, and the connecting sleeve is processed with a first slide groove. Two fixed rods and two moving rods are arranged in the connecting sleeve. One end of each moving rod is a moving end and is arranged in the first slide groove. The moving end of each moving rod reciprocates along the length direction of the first slide groove. The other end of each moving rod is hinged on a connecting seat. A fixed rod is correspondingly arranged below each moving rod. One end of each fixed rod is fixedly connected to the outer wall of the connecting sleeve, and the other end of each fixed rod is on the same connecting seat as its corresponding moving rod; there is an installation groove on each inner side wall of the square hole, and a connecting cable assembly is arranged in each installation groove. Each sliding sleeve reciprocates along the length direction of the sliding rod, and each sliding sleeve is provided with a cable chain, and the two cable chains are detachably connected. The present invention is used for tower cranes.

Description

Technical field:

[0001] The invention relates to a protection system, in particular to a balanced protection system for a tower crane. Background technology:

[0002] Tower crane is an indispensable equipment at the construction site. The installation and operation procedures of tower crane need to be strictly implemented. However, even so, safe construction is crucial for the tower crane during its operation. At present, under the premise of strictly implementing the installation and operation procedures of the crane, there are still hidden dangers in the safe use of tower cranes. Specifically, during the use of tower cranes, the deflection amplitude is too large due to external influences, and the tower cranes fail to be effectively controlled and maintained in time, resulting in the risk of collapse of the tower cranes. Once this occurs, serious losses will be caused. At present, there is a lack of effective protection and early warning measures. Summary of the invention:

[0003] In order to solve the problems mentioned in the above background technology, an object of the present invention is to provide a balanced protection system for a tower crane.

[0004] A balanced protection system for a tower crane, comprising at least one positioning connector, the positioning connector comprising a connecting sleeve, two fixed rods, two moving rods, two connecting seats and four connecting cable assemblies, the connecting sleeve being an outer circular inner square sleeve, the inner hole of the connecting sleeve being a square hole, the outer wall of the connecting sleeve being processed with a first slide groove along its circumferential direction, the two fixed rods and the two moving rods being arranged in the connecting sleeve, one end of each moving rod being a moving end and being arranged in the first slide groove, the moving end of each moving rod being reciprocating along the length direction of the first slide groove, the other end of each moving rod being hinged on a connecting seat, a fixed rod being correspondingly arranged below each moving rod, one end of each fixed rod being fixedly connected to the outer wall of the connecting sleeve, and the other end of each fixed rod being on the same connecting seat as its corresponding moving rod;

[0005] An installation groove is processed on each inner side wall of the square hole, and a connecting cable assembly is arranged in each installation groove. The connecting cable assembly includes a lock, two sliding rods, two sliding sleeves and two cable chains. The two sliding rods are arranged in parallel in the installation groove along the height direction of the installation groove, and each sliding rod is correspondingly sleeved. Each sliding sleeve reciprocates along the length direction of its corresponding sliding rod. Each sliding sleeve is provided with a cable chain, and the two cable chains are detachably connected by a lock.

[0006] As a preferred solution: the connecting sleeve and the moving rod are equipped with a monitoring system, which includes a three-dimensional swing sensor A, a three-dimensional swing sensor B, a three-dimensional swing sensor C, a three-dimensional swing sensor D, a controller, an alarm A, an alarm B, an alarm C and an alarm D. The three-dimensional swing sensor A and the three-dimensional swing sensor B have the same structure, and the three-dimensional swing sensor A and the three-dimensional swing sensor B are arranged in parallel on the top surface of the connecting sleeve. The three-dimensional swing sensor C and the three-dimensional swing sensor D have the same structure, and the three-dimensional swing sensor C and the three-dimensional swing sensor D are respectively arranged at the bottom of the two moving rods. The three-dimensional swing sensor A is electrically connected to the alarm A through the controller, the three-dimensional swing sensor B is electrically connected to the alarm B through the controller, the three-dimensional swing sensor C is electrically connected to the alarm C through the controller, and the three-dimensional swing sensor D is electrically connected to the alarm D through the controller.

[0007] As a preferred solution: a second slide groove is processed on the outer wall of the sliding sleeve, one end of the cable chain is arranged in the second slide groove through the first spherical connector, and the other end of the cable chain is connected to the lock buckle.

[0008] As a preferred solution: the cable chain is a ring-type cable chain, which includes at least three metal ring chains, which are arranged in parallel, each metal ring chain is formed by connecting a number of single rings in sequence, and every two adjacent metal ring chains are connected.

[0009] As a preferred solution: the connecting seat includes a plate body and a three-pronged support leg, the three-pronged support leg is integrally connected to the plate body, and a fixed rod and a movable rod are hinged on the end surface of the plate body facing the connecting sleeve.

[0010] As a preferred solution: the three-pronged support leg includes a first support leg, a second support leg and a third support leg, one end of the first support leg is arranged on the other end surface of the board body, the other end of the first support leg is a first fixed end, one end of the second support leg is arranged on a side surface of the board body, the other end of the second support leg is a second fixed end, one end of the third support leg is arranged on the second support leg, and the other end of the third support leg is a third fixed end.

[0011] As a preferred solution: the moving end of each moving rod is arranged in the first sliding groove through the second spherical connecting member.

[0012] As a preferred solution: it is characterized in that: the fixed rod and the movable rod are both telescopic rods.

[0013] As a preferred solution: the moving rods are all electrically controlled telescopic rods.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. At least one positioning connector in the present invention can provide timely and effective balanced support for the tower crane, with comprehensive protection effect. The connection sleeve, two fixed rods, two movable rods, two connecting seats and four connecting cable components in each positioning connector cooperate with each other to realize multi-position support adjustment of the circumference of the tower body, and can select multiple supports according to external conditions, and can also carry out timely and effective support adjustment process according to external natural environmental conditions.

[0016] Second, the structure of the present invention is reasonable and is specially used in conjunction with a tower crane to provide a stable and effective auxiliary support for the tower crane. While ensuring that the basic structure of the tower crane remains unchanged, the stability of the tower crane is enhanced to avoid the hidden danger of collapse due to excessive deflection.

[0017] 3. The present invention forms a dynamic and static combined quantitative control mode of the yaw control of the tower crane through two moving rods and two fixed rods, and the control positions are multiple and stable, thereby achieving multi-position support for the tower body and accurate and stable dynamic positioning effect. Description of the drawings:

[0018] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of a first three-dimensional structure of the present invention;

[0020] Figure 2 A three-dimensional structural schematic diagram of the connection relationship between the connecting sleeve, the fixed rod and the movable rod;

[0021] Figure 3 is a schematic diagram of the three-dimensional structure of the connecting seat;

[0022] Figure 4 It is a schematic diagram of the main structure of the connection relationship between the inner wall of the square hole and the connecting cable assembly;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 It is a schematic diagram of a three-dimensional structure in which a three-dimensional swing sensor C is arranged on a moving rod, in which the bottom of the moving rod is facing toward the exposed setting position of the three-dimensional swing sensor C;

[0025] Figure 7 This is the working principle block diagram of the monitoring system;

[0026] Figure 8 This is a first use state diagram of the present invention in conjunction with a tower crane;

[0027] Fig. 9 This is a diagram of a second use state of the present invention in conjunction with a tower crane.

[0028] In the figure, 1-connecting sleeve; 2-fixed rod; 3-movable rod; 4-connecting seat; 4-1-board body; 4-2-three-pronged leg; 4-2-1-first leg; 4-2-2-second leg; 4-2-3-third leg; 5-connecting cable assembly; 5-1-locking buckle; 5-2-sliding rod; 5-3-sliding sleeve; 5-4-cable chain; 5-4-1-metal ring chain; 5-4-2-single ring; 6-first slide groove; 7-square hole; 8- Mounting slot; 9-second slide slot; 10-first spherical connector; 11-second spherical connector; 12-tower body; 13-support frame; 14-support wall; 15-1-three-dimensional swing sensor A; 15-2-three-dimensional swing sensor B; 15-3-three-dimensional swing sensor C; 15-4-three-dimensional swing sensor D; 16-controller; 17-alarm A; 18-alarm B; 19-alarm C; 20-alarm D. Specific implementation method:

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0030] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0031] Specific implementation method 1: Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9To explain this embodiment, this specific embodiment adopts the following technical scheme: this embodiment includes at least one positioning connector, the positioning connector includes a connecting sleeve 1, two fixed rods 2, two mobile rods 3, two connecting seats 4 and four connecting cable assemblies 5, the connecting sleeve 1 is an outer circle and inner square sleeve, the inner hole of the connecting sleeve 1 is a square hole 7, the outer wall of the connecting sleeve 1 is processed with a first slide groove 6 along its circumferential direction, the two fixed rods 2 and the two mobile rods 3 are all arranged in the connecting sleeve 1, one end of each mobile rod 3 is a mobile end and it is arranged in the first slide groove 6, the mobile end of each mobile rod 3 reciprocates along the length direction of the first slide groove 6, the other end of each mobile rod 3 is hinged on a connecting seat 4, a fixed rod 2 is correspondingly arranged below each mobile rod 3, one end of each fixed rod 2 is fixedly connected to the outer wall of the connecting sleeve 1, and the other end of each fixed rod 2 and its corresponding mobile rod 3 are on the same connecting seat 4;

[0032] The square hole 7 is arranged to match the shape of the tower body 12. An installation groove 8 is processed on each inner side wall of the square hole 7. A connecting cable assembly 5 is arranged in each installation groove 8. The connecting cable assembly 5 includes a lock 5-1, two slide bars 5-2, two slide sleeves 5-3 and two cable chains 5-4. The two slide bars 5-2 are arranged in parallel in the installation groove 8 along the height direction of the installation groove 8. A slide sleeve 5-3 is correspondingly mounted on each slide bar 5-2. Each slide sleeve 5-2 reciprocates along the length direction of its corresponding slide bar 5-1. A cable chain 5-4 is arranged on each slide sleeve 5-2. The two cable chains 5-4 are detachably connected by the lock 5-1.

[0033] In this embodiment, the supporting object matched with the connecting seat 4 is a building near the tower body 12, and the connection is achieved while complying with relevant specifications. The supporting object matched with the connecting seat 4 is also a supporting wall 14 with a foundation, and the supporting wall 14 is arranged near the tower body 12.

[0034] Specific implementation method 2: This implementation method is a further limitation of specific implementation method 1. Figure 1 , Figure 6 and Figure 7As shown, the connecting sleeve 1 and the moving rod 3 are equipped with a monitoring system, which includes a three-dimensional swing sensor A15-1, a three-dimensional swing sensor B15-2, a three-dimensional swing sensor C15-3, a three-dimensional swing sensor D15-4, a controller 16, an alarm A17, an alarm B18, an alarm C19 and an alarm D20. The three-dimensional swing sensor A15-1 and the three-dimensional swing sensor B15-2 have the same structure. The three-dimensional swing sensor A15-1 and the three-dimensional swing sensor B15-2 are arranged in parallel on the top surface of the connecting sleeve 1. The motion sensor C15-3 and the three-dimensional swing sensor D15-4 have the same structure. The three-dimensional swing sensor C15-3 and the three-dimensional swing sensor D15-4 are respectively arranged at the bottom of the two moving rods 3. The three-dimensional swing sensor A15-1 is electrically connected to the alarm A17 through the controller 16, the three-dimensional swing sensor B15-2 is electrically connected to the alarm B18 through the controller 16, the three-dimensional swing sensor C15-3 is electrically connected to the alarm C19 through the controller 16, and the three-dimensional swing sensor D15-1 is electrically connected to the alarm D20 through the controller 16.

[0035] In this embodiment, the three-dimensional swing sensor A15-1, the three-dimensional swing sensor B15-2, the three-dimensional swing sensor C15-3, the three-dimensional swing sensor D15-4, the controller 16, the alarm A17, the alarm B18, the alarm C19 and the alarm D20 are all existing products, and the three-dimensional swing sensor A15-1 and the three-dimensional swing sensor B15-2 are set at positions for monitoring the swing of the tower body 12 by monitoring the connecting sleeve 1. The three-dimensional swing sensor C15-3 and the three-dimensional swing sensor D15-4 monitor the swing amplitude and frequency of the moving rod 3 along with the connecting sleeve 1 from the moving rod 3 respectively.

[0036] Furthermore, the controller 16 , the alarm A17 , the alarm B18 , the alarm C19 and the alarm D20 are all installed in the operation room of the tower body 12 and / or the ground command room.

[0037] Furthermore, the three-dimensional swing sensor A15-1 specifically monitors the vibration amplitude and frequency of the tower body 12 in the vertical axial direction and the horizontal radial direction of the connecting sleeve 1. Similarly, the three-dimensional swing sensor B15-2 specifically monitors the vibration amplitude and frequency of the tower body 12 in the axial direction and the radial direction of the connecting sleeve 1.

[0038] Furthermore, the three-dimensional swing sensor C15-3 specifically monitors the vibration amplitude and frequency in the length, width and height directions of one moving rod 3. Similarly, the three-dimensional swing sensor D15-4 specifically monitors the vibration amplitude and frequency in the length, width and height directions of another moving rod 3.

[0039] Specific implementation method three: This implementation method is a further limitation of specific implementation method two. The monitoring system in this implementation method has multi-directional monitoring, which can monitor the tower body 12 in a timely and effective manner, and can also be used in emergency environments. In an unloaded and windless state, the lateral verticality deviation of the axis of the tower body 12 to the supporting surface should not be greater than 4‰; after attachment, the verticality deviation below the highest attachment point should not be greater than 2‰. When the height of the tower body 12 is 70 meters, it is normal for the verticality deviation of the tower body 12 with a height of 70 meters to be within 280 mm, that is, the calculation process is 70×1000×4‰=280mm. According to the safety specifications for tower cranes, operations are not allowed in strong winds above level 6, including level 6. The airflow speed of level 6 wind is between 10.8m\s and 13.8m\s. The verticality deviation of the tower body 12 at a height of 70 meters under level 6 wind speed is 70×1000×4‰=280mm. This data is the critical value of the warning data of the 70-meter tower body 12. The critical value of the warning data -30mm is the effective warning data. The effective warning data is pre-input into the control program in the controller 16. When the data detected by the three-dimensional swing sensor A15-1, the three-dimensional swing sensor B15-2, the three-dimensional swing sensor C15-3 or the three-dimensional swing sensor D15-4 exceeds the effective warning data, the controller 16 controls the alarm A17, the alarm B18, the alarm C19 and / or the alarm D20 corresponding to each swing sensor to issue an alarm for early warning, promptly notify the operators on the tower to evacuate, and provide an effective time point for the evacuation of critically ill personnel.

[0040] In this embodiment, whether to evacuate the tower body 12 is determined based on the number of alarms from alarms A17, alarms B18, alarms C19 and / or alarms D20. When the number of alarms from alarms A17, alarms B18, alarms C19 and / or alarms D20 exceeds half, it is a warning to evacuate the tower body 12 in time. When alarms A17 and C19 both alarm, it is also necessary to evacuate the tower body 12 in time. The number of three-dimensional swing sensors and alarms needs to be appropriately increased according to the specifications of the tower body 12. This embodiment is a minimum number of settings.

[0041] In this embodiment, tower bodies 12 of different heights correspond to different critical values ​​of early warning data and effective early warning data, which can be specifically calculated and set according to actual conditions.

[0042] In this embodiment, the controller 16 is also provided with a wind force test sensor for effectively monitoring the wind force, preventing the tower body 12 from shaking significantly due to failure to detect a small amount of wind in time, thereby reducing the probability of erroneous evacuation.

[0043] Specific embodiment 4: This embodiment is a further limitation of specific embodiments 1, 2 or 3. A support frame 13 is detachably connected to the rear of the support wall 14. When the tower body 12 can rely on the surrounding buildings for auxiliary support, the support frame 13 behind the support wall 14 is removed, and the fixed rod 2 and the movable rod 3 are passed through the support wall 14 and connected to the building through the connecting seat 4. When the tower body 12 has no surrounding buildings for auxiliary support, the fixed rod 2 and the movable rod 3 are connected to the support wall 14 with the support frame 13 through the connecting seat 4.

[0044] Specific embodiment five: This embodiment is a further limitation of specific embodiments one, two, three or four. In this embodiment, a second slide groove 9 is processed on the outer wall of the sliding sleeve 5-2, one end of the chain 5-4 is arranged in the second slide groove 9 through the first spherical connector 10, and the other end of the chain 5-4 is connected to the lock buckle 5-1.

[0045] Specific embodiment six: This embodiment is a further limitation of specific embodiments one, two, three, four or five. In this embodiment, the cable chain 5-4 is a ring-type cable chain, and the cable chain 5-4 includes at least three metal ring chains 5-4-1. At least three metal ring chains 5-4-1 are arranged in parallel, and each metal ring chain 5-4-1 is formed by connecting a plurality of single rings 5-4-2 in sequence, and every two adjacent metal ring chains 5-4-1 are connected.

[0046] The metal ring chain 5 - 4 - 1 in this embodiment is a chain body with a retractable length. The retracted length of the metal ring chain 5 - 4 - 1 is determined according to the swing amplitude of the tower body 12 and the specific connection position between the connecting sleeve 1 and the tower body 12 .

[0047] In this embodiment, the lock buckle 5-1 is a buckle-shaped structure, which is divided into two parts, and each part is connected to a cable chain 5-4.

[0048] The working process of the connecting cable assembly 5 in this embodiment is as follows:

[0049] The connecting cable assembly 5 includes a lock 5-1, two slide bars 5-2, two slide sleeves 5-3 and two cable chains 5-4. When the connecting sleeve 1 is put on the tower body 12 and moved to a predetermined position, the two cable chains 5-4 in the installation groove 8 are opened through the lock 5-1, and one of the two cable chains 5-4 is passed from the installation groove 8 around the tower body 12 to the outer wall at one end corner of the tower body 12 and connected with a cable chain 5-4 in the second installation groove 8, and the connection method is welding. Then, the other of the two cable chains 5-4 is passed from the installation groove 8 around the tower body 12 to the outer wall at the other end corner of the tower body 12 and connected with a cable chain 5-4 in the third installation groove 8, and the connection method is welding. Similarly, the two matching cable chains 5-4 at other end corners of the tower body 12 are fixedly connected, so that a multi-end angle positioning method between the connecting sleeve 1 and the tower body 12 is formed through four connecting cable assemblies 5, ensuring the stable connection effect between the connecting sleeve 1 and the tower body 12.

[0050] Furthermore, the number of cable chains 5 - 4 can be increased according to the specific design conditions and the conditions of the tower body 12 .

[0051] Specific embodiment seven: This embodiment is a further limitation of specific embodiments one, two, three, four, five or six, the connecting seat 4 includes a plate body 4-1 and a three-pronged support leg 4-2, the three-pronged support leg 4-2 is integrally connected to the plate body 4-1, and a fixed rod 2 and a movable rod 3 are hinged on the end face of the plate body 4-1 facing the connecting sleeve 1.

[0052] In this embodiment, the structure of the tripod support leg 4-2 is used in the present invention to connect the tower body 12 with nearby buildings or other supports therewith. The connection form is multi-directional and multi-position, and the connection effect is stable and reliable.

[0053] Specific implementation eight: This implementation is a further limitation of specific implementation seven. In this implementation, the three-pronged support leg 4-2 includes a first support leg 4-2-1, a second support leg 4-2-2-2 and a third support leg 4-2-3. One end of the first support leg 4-2-1 is arranged on the other end surface of the board body 4-1, and the other end of the first support leg 4-2-1 is a first fixed end. One end of the second support leg 4-2-2-2 is arranged on a side surface of the board body 4-1, and the other end of the second support leg 4-2-2-2 is a second fixed end. One end of the third support leg 4-2-3 is arranged on the second support leg 4-2-2-2, and the other end of the third support leg 4-2-3 is a third fixed end.

[0054] In this embodiment, the structure of the tripod support leg 4-2 has multi-position fixed ends, which is suitable for cooperating with the facades and sides of the buildings around the tower body 12 to achieve multi-angle support, and the support strength is stable and reliable.

[0055] Specific embodiment nine: This embodiment is a further limitation of specific embodiments one, two, three, four, five, six, seven or eight. In this embodiment, the moving end of each moving rod 3 is arranged in the first sliding groove 6 through the second spherical connector 11.

[0056] In this embodiment, the first spherical connector 10 and the second spherical connector 11 are both ball joints. The second spherical connector 11 is not only convenient for cooperating with the moving rod 3 to realize flexible movement in the first slide groove 6, but also can cooperate with the moving rod 3 to realize a certain angle of pitch movement in the vertical direction, thereby enhancing the flexibility of adjustment. The purpose and effect of the first spherical connector 10 are similar.

[0057] Furthermore, lubricating oil is injected into the respective matching grooves of the first spherical connector 10 and the second spherical connector 11 .

[0058] Specific embodiment 10: This embodiment is a further limitation of specific embodiments 1, 2, 3, 4, 5, 6, 7, 8 or 9, and the fixed rod 2 and the movable rod 3 are both telescopic rods. The movable rod 3 is an electric telescopic rod.

[0059] In this embodiment, the telescopic rod is preferably an electric telescopic rod, which is equipped with a motor and a rod controller, and the rod controller cooperates with the monitoring system to achieve timely and effective adjustment of the mobile rod 3 according to the wind conditions, and control the extension and extension range of each telescopic rod, so as to enhance the stability of the tower body 12 under low-level wind conditions, so as to timely regulate the yaw range of the tower body 12. The extension or retraction length of the fixed rod 2 and / or the mobile rod 3 can be controlled in real time according to the influence of external factors through the existing program.

[0060] Specific implementation eleven: This implementation is a further limitation of specific implementations one, two, three, four, five, six, seven, eight, nine or ten. In this implementation, the setting position of the positioning connector and the distance between two adjacent positioning connectors are specifically limited according to the situation of the tower body 12.

[0061] Working process:

[0062] The connecting sleeve 1 is connected to the tower body 12 through the connecting cable assembly 5. The present invention is assembled in a state of no wind or low wind level. The position and telescopic length of each fixed rod 2 and movable rod 3 are adjusted and positioned. When the wind force is strong, the monitoring system is used to timely warn the personnel inside and around the tower body 12 for effective evacuation, thereby improving the safety of the tower crane.

[0063] The undisclosed parts in the present invention are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A balanced protection system for a tower crane, characterized in that: The invention comprises at least one positioning connecting body, which comprises a connecting sleeve (1), two fixed rods (2), two movable rods (3), two connecting seats (4) and four connecting cable assemblies (5); the connecting sleeve (1) is a sleeve body with an outer circle and an inner square; the inner hole of the connecting sleeve (1) is a square hole (7); the outer wall of the connecting sleeve (1) is processed with a first slide groove (6) along its circumferential direction; the two fixed rods (2) and the two movable rods (3) are all arranged in the connecting sleeve (1); one end of each movable rod (3) is a movable end and is arranged in the first slide groove (6); the movable end of each movable rod (3) reciprocates along the length direction of the first slide groove (6); the other end of each movable rod (3) is hinged on a connecting seat (4); a fixed rod (2) is correspondingly arranged below each movable rod (3); one end of each fixed rod (2) is fixedly connected to the outer wall of the connecting sleeve (1); the other end of each fixed rod (2) and its corresponding movable rod (3) are on the same connecting seat (4); A mounting groove (8) is processed on each inner side wall of the square hole (7), and a connecting cable assembly (5) is arranged in each mounting groove (8). The connecting cable assembly (5) comprises a lock buckle (5-1), two slide bars (5-2), two slide sleeves (5-3) and two cable chains (5-4). The two slide bars (5-2) are arranged in parallel in the mounting groove (8) along the height direction of the mounting groove (8), and each slide bar (5-2) is correspondingly sleeved with a slide sleeve (5-3). Each slide sleeve (5-2) reciprocates along the length direction of its corresponding slide bar (5-1). Each slide sleeve (5-2) is provided with a cable chain (5-4), and the two cable chains (5-4) are detachably connected via the lock buckle (5-1); The connecting sleeve (1) and the moving rod (3) are provided with a monitoring system, which includes a three-dimensional swing sensor A (15-1), a three-dimensional swing sensor B (15-2), a three-dimensional swing sensor C (15-3), a three-dimensional swing sensor D (15-4), a controller (16), an alarm A (17), an alarm B (18), an alarm C (19) and an alarm D (20). The three-dimensional swing sensor A (15-1) and the three-dimensional swing sensor B (15-2) have the same structure. The three-dimensional swing sensor A (15-1) and the three-dimensional swing sensor B (15-2) are arranged in parallel on the top surface of the connecting sleeve (1). The three-dimensional swing sensor C (15-3) and the three-dimensional swing sensor D (15-4) have the same structure. The three-dimensional swing sensor C (15-3) and the three-dimensional swing sensor D (15-4) are respectively arranged at the bottom of the two moving rods (3). The three-dimensional swing sensor A (15-1) is electrically connected to the alarm A (17) through the controller (16). The three-dimensional swing sensor B (15-2) is electrically connected to the alarm B (18) through the controller (16). The three-dimensional swing sensor C (15-3) is electrically connected to the alarm C (19) through the controller (16). The three-dimensional swing sensor D (15-1) is electrically connected to the alarm D (20) through the controller (16). A second slide groove (9) is formed on the outer wall of the sliding sleeve (5-2); one end of the cable chain (5-4) is arranged in the second slide groove (9) via a first spherical connector (10); and the other end of the cable chain (5-4) is connected to the lock buckle (5-1); The fixed rod (2) and the movable rod (3) are both telescopic rods.

2. A balanced protection system for a tower crane according to claim 1, characterized in that: The cable chain (5-4) is a ring-type cable chain, comprising at least three strands of metal ring chains (5-4-1), the at least three strands of metal ring chains (5-4-1) being arranged in parallel, each strand of the metal ring chain (5-4-1) being formed by sequentially connecting a plurality of single rings (5-4-2), and every two adjacent strands of the metal ring chains (5-4-1) being connected.

3. A balanced protection system for a tower crane according to claim 1, characterized in that: The connecting seat (4) comprises a plate body (4-1) and a three-pronged support leg (4-2), the three-pronged support leg (4-2) being integrally connected to the plate body (4-1), and a fixed rod (2) and a movable rod (3) being hingedly connected to the end surface of the plate body (4-1) facing the connecting sleeve (1).

4. A balanced protection system for a tower crane according to claim 3, characterized in that: The three-pronged support leg (4-2) comprises a first support leg (4-2-1), a second support leg (4-2-2) and a third support leg (4-2-3), one end of the first support leg (4-2-1) being arranged on the other end face of the board body (4-1), the other end of the first support leg (4-2-1) being a first fixed end, one end of the second support leg (4-2-2) being arranged on a side face of the board body (4-1), the other end of the second support leg (4-2-2) being a second fixed end, one end of the third support leg (4-2-3) being arranged on the second support leg (4-2-2), and the other end of the third support leg (4-2-3) being a third fixed end.

5. A balanced protection system for a tower crane according to claim 1, characterized in that: The moving end of each moving rod (3) is arranged in the first sliding groove (6) via a second spherical connecting member (11).

6. A balanced protection system for a tower crane according to claim 1, characterized in that: The moving rods (3) are all electrically controlled telescopic rods.

Images