Self-balancing track type crane anchoring device

Abstract

The utility model discloses a self-balancing track type crane anchoring device. The self-balancing track type crane anchoring device comprises an anchoring frame, a lower box body, a floating plate, a control assembly, a bolt and an anchoring seat, the anchoring frame is of an isosceles triangle truss structure which is vertically and transversely arranged, and the two waist edges of the anchoring frame are arranged downwards and connected with the upper surface of the lower box body. A floating plate is horizontally and longitudinally arranged in the middle of the upper surface of the lower box body and between the two waist edges of the anchoring frame, the floating plate is horizontally and rotatably connected with the lower box body around the center, and the front and rear ends of the floating plate extend out of the front and rear surfaces of the lower box body; bolts are vertically arranged on the upper surface of the floating plate relative to the front side and the rear side of the lower box body, the lower ends of the bolts vertically and downwards extend out of the lower surface of the floating plate, anchoring seats are arranged on the ground relative to the positions of the two bolts, and the bolts are vertically and slidably connected with the floating plate through driving of a control assembly; and the lower ends of the bolts are inserted into the corresponding anchoring seats. According to the utility model, the loads of the two bolts can be automatically balanced.

Description

Technical Field

[0001] This utility model relates to the field of rail crane technology, and specifically to a self-balancing rail crane anchoring device. Background Technology

[0002] For large rail-mounted cranes, such as gantry cranes, quay container cranes, bridge grab unloaders, and portal cranes, in the event of extreme storms, the braking force of the traveling mechanism is insufficient to resist the wind load. This can cause the rail-mounted crane to slip along the rail, eventually colliding with the stop at the end of the rail or even overturning, resulting in huge property damage and even potentially serious casualties.

[0003] To prevent rail-mounted cranes from slipping and overturning in storms, the industry employs various anti-slip and anti-overturning measures, such as windproof cables, windproof wheel chocks, rail clamps, wheel clamps, and anchoring devices. Anchoring devices, a very common anti-slip measure for rail-mounted cranes, are equipped on almost all larger rail-mounted cranes. In storms, anchor pins are inserted into anchor seats on both sides of the rail, preventing the rail-mounted crane from slipping along the rail. Typically, a set of anchoring devices uses two pins. In the design of the anchoring device, the load on these two pins is obtained by dividing the total load of a single set of anchoring devices by the number of pins. However, finite element analysis revealed that using existing conventional anchoring devices, even with no misalignment between the two pins, the loads on the two pins in the same set of anchoring devices are not equal, and the load difference is significant. This is mainly due to the torsion of the upper machine legs in storms, which causes the lower anchoring device to twist as well. Therefore, if the anchoring device is designed to share the load equally between the two pins, it will undoubtedly bring great safety risks to the whole machine.

[0004] In addition, existing conventional anchoring devices cannot cope with the following three types of errors: 1) Structural error: Since the anchoring device is a structural component with low precision, there will inevitably be front-to-back errors between the two pins during the manufacturing process; 2) Foundation error: Since the anchoring seat is installed on the ground foundation on both sides of the track, it falls under the scope of infrastructure construction and has lower precision than the anchoring structure, resulting in greater front-to-back misalignment of the anchoring seats on both sides; 3) Random error: In actual use, due to the complex ground environment of docks, ports, and storage yards, some debris, especially metal debris, will inevitably fall into the anchoring seat. This will further increase the front-to-back misalignment of the contact point between the pin and the anchoring seat, making the force on the pin more unbalanced and unpredictable.

[0005] This leads to the following defects in existing anchoring devices: 1) The design process does not consider the load distribution of the pins, but assumes uniform load, which poses a high risk; 2) It cannot adapt to structural errors and infrastructure errors, and can only adapt through structural deformation, resulting in huge differences in pin loads and unreliable safety; 3) It cannot adapt to some unexpected situations that may occur during use, resulting in low reliability and uncontrollable safety.

[0006] Therefore, developing an anchoring device that can automatically balance the load of two pins has become an urgent problem to be solved. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a self-balancing rail-mounted crane anchoring device. By rotating the floating plate, the load of the two pins can be automatically balanced, and the influence of structural errors, infrastructure errors and random errors can be overcome. This ensures that the design load is consistent with the actual load, ensures the reliability of the anchoring design, and effectively avoids major accidents such as machine slippage and overturning and loss of personnel and property caused by fracture failure due to uneven distribution of anchoring load. It also improves the safety of the whole machine in storm conditions.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: The innovative feature of this utility model is that it includes an anchoring frame, a lower box, a floating plate, a control component, a pin, and an anchoring seat; the anchoring frame is a vertically and horizontally arranged isosceles triangular truss structure, with its two sides symmetrically arranged downwards, and fixedly connected to the left and right sides of the upper surface of the horizontally arranged lower box; a floating plate is also horizontally and longitudinally arranged at the middle position of the upper surface of the lower box, relative to the two sides of the anchoring frame, and the floating plate is connected to the lower box... The housing is horizontally connected around its center, and both its front and rear ends extend vertically out of the vertical plane containing the front and rear surfaces of the lower housing. On the upper surface of the floating plate, pins are vertically symmetrically arranged relative to the front and rear sides of the lower housing, and the lower end of each pin extends vertically downward out of the lower surface of the floating plate. Anchor seats are respectively provided on the ground at the positions of the two pins, and the upper end of each pin is hinged to the control end of the corresponding control component. Through the drive of the control component, the pin slides vertically up and down with the floating plate, thereby inserting the lower end of the pin into the corresponding anchor seat to achieve anchoring.

[0009] Preferably, the anchoring frame is a truss structure welded from H-beams and stiffening plates, with its bottom edge horizontally arranged and fixedly connected to the corresponding position of the horizontally arranged rail-mounted crane; the front and rear surfaces of the anchoring frame are respectively located in the same vertical plane as the front and rear surfaces of the lower box body, and the lower ends of its two waist sides are respectively inclined inward and downward and fixedly connected to the left and right ends of the upper surface of the lower box body, without interfering with the horizontal rotation of the floating plate.

[0010] Preferably, it also includes a rotating shaft and a baffle; a rotating shaft is vertically provided between the middle position of the lower surface of the floating plate and the upper surface of the lower box, and the floating plate is horizontally rotatably connected to the lower box through the rotating shaft; the upper end of the rotating shaft extends vertically upward beyond the upper surface of the floating plate, and a circular baffle is coaxially sleeved on the part extending beyond the floating plate, and the upper limit of the floating plate is controlled by the baffle.

[0011] Preferably, each pin is integrally formed from a vertically and horizontally arranged upper rectangular plate, a middle equilateral triangular plate, and a lower rectangular plate aligned from top to bottom. The thickness of each upper rectangular plate, middle equilateral triangular plate, and lower rectangular plate is consistent. The horizontal width of each lower rectangular plate is consistent with the side length of the corresponding middle equilateral triangular plate, and its upper end face is aligned with one side of the corresponding middle equilateral triangular plate. The horizontal width of each upper rectangular plate is smaller than the side length of the corresponding middle equilateral triangular plate, and the other two sides of each middle equilateral triangular plate are vertically upward and aligned with the lower end face of the corresponding upper rectangular plate. A matching triangular groove is vertically embedded and penetrated in the middle of the middle equilateral triangular plate of each pin, thereby reducing the weight of the corresponding pin through the triangular groove.

[0012] Preferably, a first slot is vertically embedded through the upper surface of the floating plate relative to each pin position. Each first slot matches the upper rectangular plate corresponding to the pin, and its length and width are 5mm larger than the width and thickness of the corresponding upper rectangular plate, respectively. It is also ensured that the length of each first slot is less than the side length of the corresponding central equilateral triangle plate.

[0013] Preferably, it also includes a pin shaft; a pin hole matching the pin shaft is vertically opened on the front surface of the upper rectangular plate of each pin near its upper end, and each pin shaft is coaxially inserted into the corresponding pin hole and vertically hinged to the control end of the corresponding control component. Each control component is installed at the corresponding position on the upper surface of the lower housing and does not interfere with the horizontal rotation of the floating plate. Then, under the drive of the control component, the pins slide vertically up and down with the floating plate along the corresponding first slot, and the vertical upward movement of the corresponding pin is limited by the cooperation of the central equilateral triangular plate and the first slot.

[0014] Preferably, it also includes a lower base plate; a lower base plate is horizontally provided on the front and rear surfaces of the lower housing near its lower end, the position of each lower base plate corresponds to the position of the corresponding pin, and its lower surface is flush with the lower surface of the lower housing, and is symmetrically arranged relative to the floating plate in the horizontal longitudinal state; the lateral length of each lower base plate is greater than the side length of the equilateral triangle plate in the middle of the corresponding pin, and its longitudinal width is required to cover the corresponding pin; a second slot is vertically embedded and penetrated on the upper surface of each lower base plate relative to each pin position, each second slot matches one side of the equilateral triangle plate in the middle of the corresponding pin, and its length and width are 5mm greater than the side length and thickness of the corresponding equilateral triangle plate, so that the lower rectangular plate of the pin slides vertically downward through the corresponding second slot and is then inserted into the corresponding anchoring seat, and the stability of the anchoring operation is ensured by the lower base plate.

[0015] Preferably, the position of each anchoring seat corresponds to the position of each pin, and the two anchoring seats are symmetrically arranged on the front and rear sides of the lower box. A third slot is vertically embedded and penetrated on the upper surface of each anchoring seat relative to each pin position. Each third slot matches the lower rectangular plate of the corresponding pin, and its length and width are 5-10 mm larger than the width and thickness of the corresponding lower rectangular plate, so that the lower rectangular plate of the pin passes through the corresponding second slot and is then inserted into the third slot of the corresponding anchoring seat to achieve the anchoring action.

[0016] Preferably, the vertical length of each pin must ensure that when it descends to the lower limit position, the lower rectangle of the pin is inserted into the third slot of the corresponding anchor seat.

[0017] The beneficial effects of this utility model are:

[0018] (1) This utility model can automatically balance the load of the two pins by rotating the floating plate, and overcome the influence of structural error, infrastructure error and random error, so that the design load is consistent with the actual load, ensuring the reliability of the anchoring design, effectively avoiding the occurrence of major accidents such as slippage and overturning of the whole machine and loss of personnel and property caused by fracture failure due to uneven distribution of anchoring load, and improving the safety of the whole machine in storm conditions;

[0019] (2) This utility model can adjust the distance between the two pins and the rotating shaft according to the actual situation to form different lever arm ratios, so that the total anchoring load is distributed to the two pins according to the ratio, ensuring that the pins are subjected to balanced force and ensuring the safety of the whole machine. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a self-balancing rail crane anchoring device according to the present invention.

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle.

[0023] Among them, 1-anchoring frame; 2-pin; 3-floating plate; 4-rotating shaft; 5-anchoring seat; 6-lower base plate; 7-pin hole. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0025] This utility model discloses a self-balancing rail-mounted crane anchoring device, comprising an anchoring frame 1, a lower housing, a floating plate 3, a control assembly, a pin 2, and an anchoring seat 5; the specific structure is as follows: Figure 1 , Figure 2 As shown, the anchor frame 1 is an isosceles triangular truss structure arranged vertically and horizontally, with its two sides symmetrically facing downwards, and fixedly connected to the left and right sides of the upper surface of the lower box arranged horizontally; a floating plate 3 is also arranged horizontally and longitudinally in the middle of the upper surface of the lower box and between the two sides of the anchor frame 1. The floating plate 3 is horizontally and rotatably connected to the lower box around its center, and its front and rear ends extend vertically out of the vertical plane of the front and rear surfaces of the lower box.

[0026] like Figure 1, Figure 2 As shown, the anchoring frame 1 is a truss structure welded from H-beams and stiffening plates, with its bottom edge horizontally positioned and fixedly connected to the horizontally positioned rail-mounted crane at the corresponding position. The front and rear surfaces of the anchoring frame 1 are respectively located in the same vertical plane as the front and rear surfaces of the lower box body, and the lower ends of its two waist sides are respectively inclined inwards and downwards, fixedly connected to the left and right ends of the upper surface of the lower box body, without interfering with the horizontal rotation of the floating plate 3. The connection position and connection method between the anchoring frame 1 and the rail-mounted crane of this utility model are consistent with the prior art, and therefore will not be described again here.

[0027] like Figure 1 , Figure 2 As shown, a rotating shaft 4 is vertically provided between the middle of the lower surface of the floating plate 3 and the upper surface of the lower box, and the floating plate 3 is horizontally rotatably connected to the lower box through the rotating shaft 4; the upper end of the rotating shaft 4 extends vertically upward from the upper surface of the floating plate 3, and a circular baffle is coaxially sleeved on the part of the floating plate 3 extending from it, and the upper limit of the floating plate 3 is achieved through the baffle.

[0028] In this invention, vertically symmetrical pins 2 are provided on the upper surface of the floating plate 3 relative to the front and rear sides of the lower box body, and the lower end of each pin 2 extends vertically downward beyond the lower surface of the floating plate 3, such as... Figure 1 , Figure 2 As shown, anchoring seats 5 are respectively provided on the ground relative to the positions of the two pins 2. The upper end of each pin 2 is hinged to the control end of the corresponding control component, and is vertically and vertically slidably connected to the floating plate 3 by the drive of the control component, thereby inserting the lower end of the pin 2 into the corresponding anchoring seat 5 to achieve anchoring. The anchoring seats 5 of this utility model can also be set on other foundations, and their setting conditions are the same as those for setting on the ground.

[0029] like Figure 1 , Figure 2 As shown, each pin 2 is formed by vertically and horizontally arranged upper rectangular plate, middle equilateral triangular plate, and lower rectangular plate aligned from top to bottom. The thickness of each upper rectangular plate, middle equilateral triangular plate, and lower rectangular plate is the same. The horizontal width of each lower rectangular plate is the same as the side length of the corresponding middle equilateral triangular plate, and its upper end face is aligned with one side of the corresponding middle equilateral triangular plate. The horizontal width of each upper rectangular plate is less than the side length of the corresponding middle equilateral triangular plate, and the other two sides of each middle equilateral triangular plate are vertically upward and aligned with the lower end face of the corresponding upper rectangular plate. A matching triangular groove is vertically embedded and penetrated in the middle of the middle equilateral triangular plate of each pin 2, thereby reducing the weight of the corresponding pin 2 through the triangular groove.

[0030] like Figure 1 , Figure 2 As shown, a first slot is vertically embedded in the upper surface of the floating plate 3 relative to each pin 2 position. Each first slot matches the upper rectangular plate of the corresponding pin 2, and its length and width are 5mm larger than the width and thickness of the corresponding upper rectangular plate, respectively. It is also ensured that the length of each first slot is less than the side length of the corresponding equilateral triangle plate in the middle.

[0031] like Figure 1 , Figure 2 As shown, each pin 2 has a vertically penetrating pin hole 7 on the upper rectangular plate near its upper end, matching the pin shaft. Each pin shaft is coaxially inserted into the corresponding pin hole 7 and vertically hinged to the control end of the corresponding control component. Each control component is installed on the upper surface of the lower housing at a corresponding position, and none of them interfere with the horizontal rotation of the floating plate 3. Driven by the control components, the pins 2 slide vertically up and down along the corresponding first slots and are connected to the floating plate 3. The vertical upward movement of the corresponding pin 2 is limited by the cooperation of the central equilateral triangular plate and the first slot. The structural principle of the control component of this utility model is similar to that of a conventional well water press-type water pumping mechanism, consisting of a base, a pressure rod, and a pin shaft. This is existing technology, so the structure of the control component will not be described in detail here.

[0032] like Figure 1 , Figure 2 As shown, lower base plates 6 are horizontally arranged on the front and rear surfaces of the lower housing near their lower ends. The position of each lower base plate 6 corresponds to the position of the corresponding pin 2, and its lower surface is flush with the lower surface of the lower housing. It is symmetrically arranged relative to the floating plate 3 in the horizontal longitudinal state. The horizontal length of each lower base plate 6 is greater than the side length of the equilateral triangle plate in the middle of the corresponding pin 2, and its longitudinal width is sufficient to cover the corresponding pin 2. A second slot is vertically embedded through the upper surface of each lower base plate 6 relative to the position of each pin 2. Each second slot matches one side of the equilateral triangle plate in the middle of the corresponding pin 2, and its length and width are 5mm greater than the side length and thickness of the corresponding equilateral triangle plate. This allows the lower rectangular plate of the pin 2 to slide vertically downward through the corresponding second slot and then be inserted into the corresponding anchoring seat 5. The lower base plate 6 ensures the stability of the anchoring operation.

[0033] like Figure 1 , Figure 2As shown, the position of each anchor seat 5 corresponds to the position of each pin 2, and the two anchor seats 5 are symmetrically arranged on the front and rear sides of the lower box. A third slot is vertically embedded through the upper surface of each anchor seat 5 relative to the position of each pin 2. Each third slot matches the lower rectangular plate of the corresponding pin 2, and its length and width are 5-10mm larger than the width and thickness of the corresponding lower rectangular plate, respectively. This allows the lower rectangular plate of the pin 2 to pass through the corresponding second slot and then be inserted into the third slot of the corresponding anchor seat 5, thus achieving the anchoring action. The vertical length of each pin 2 must ensure that when it descends to its lower limit position, the lower rectangular plate of the pin 2 is inserted into the third slot of the corresponding anchor seat 5.

[0034] This invention can automatically balance the load at both ends by allowing the floating plate 3 to rotate freely. The load at both ends comes from the force at the bottom of the pin 2, which means that the force at the bottom of the pin 2 is also necessarily balanced.

[0035] Additionally, it should be noted that while the anchoring device is symmetrically positioned relative to the track in most cases, asymmetry can occur. For example, due to limitations in the foundation structure, the load-bearing capacity of the two anchoring seats 5 installation points may differ, or the positions of the two anchoring seats 5 may be asymmetrical relative to the track. In such cases, the anchoring device needs to be designed based on the actual positions of the anchoring seats 5 and the load-bearing capacity of their installation points. Specifically, this means adjusting the distance between the two pins 2 and the rotating shaft 4 according to the actual situation to create different lever arm ratios. This allows the total anchoring load to be distributed to the two pins 2 according to the ratio, ensuring balanced force on the pins 2 and guaranteeing the safety of the entire machine.

[0036] The working principle of this utility model:

[0037] When anchoring a rail-mounted crane, the crane is first moved to a position relative to the anchoring seat 5. Then, driven by the control components, the two pins 2 move vertically downwards and are inserted into the third slot of the corresponding anchoring seat 5 via the bottom plate 6. When the rail-mounted crane slips under wind load, the pins 2 inserted into the anchoring seat 5 will brake the crane, preventing it from continuing to slip. During this process, the free rotation of the floating plate 3 allows the load of the two pins 2 to be automatically balanced, thereby distributing the total load of the entire anchoring device inversely to the two pins 2 and the corresponding anchoring seat 5 according to the distance between the two pins 2 and the rotating shaft 4.

[0038] The beneficial effects of this utility model are:

[0039] (1) The present invention can automatically balance the load of the two pins 2 by rotating the floating plate 3, and overcome the influence of structural error, infrastructure error and random error, so that the design load is consistent with the actual load, ensuring the reliability of the anchoring design, effectively avoiding the occurrence of major accidents such as slippage and overturning of the whole machine and loss of personnel and property caused by fracture failure due to uneven distribution of anchoring load, and improving the safety of the whole machine in storm conditions;

[0040] (2) This utility model can adjust the distance between the two side pins 2 and the rotating shaft 4 according to the actual situation to form different lever arm ratios, so that the total anchoring load is distributed to the two pins 2 according to the ratio, ensuring that the pins 2 are subjected to balanced force and ensuring the safety of the whole machine.

[0041] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A self-balancing rail-mounted crane anchoring device, characterized by: The system includes an anchor frame, a lower housing, a floating plate, a control assembly, pins, and anchor seats. The anchor frame is a vertically and horizontally arranged isosceles triangular truss structure with its two sides symmetrically facing downwards, and is fixedly connected to the left and right sides of the upper surface of the horizontally arranged lower housing. A floating plate is also horizontally and longitudinally arranged at the middle of the upper surface of the lower housing, relative to the two sides of the anchor frame. The floating plate is horizontally rotatably connected to the lower housing around its center, and its front and rear ends extend vertically out of the vertical plane containing the front and rear surfaces of the lower housing. Pins are also vertically and symmetrically arranged on the upper surface of the floating plate relative to the front and rear sides of the lower housing, and the lower end of each pin extends vertically downwards out of the lower surface of the floating plate. Anchor seats are also provided on the ground relative to the two pin positions. The upper end of each pin is hinged to the control end of the corresponding control assembly and is vertically and vertically slidably connected to the floating plate by the drive of the control assembly, thereby inserting the lower end of the pin into the corresponding anchor seat to achieve anchoring.

2. A self-balancing rail-mounted crane anchoring device according to claim 1, characterized in that: The anchoring frame is a truss structure welded from H-beams and stiffening plates, with its bottom edge horizontally arranged and fixedly connected to the corresponding position of the horizontally arranged rail crane; the front and rear surfaces of the anchoring frame are respectively located in the same vertical plane as the front and rear surfaces of the lower box body, and the lower ends of its two waist sides are respectively inclined inward and downward and fixedly connected to the left and right ends of the upper surface of the lower box body, without interfering with the horizontal rotation of the floating plate.

3. A self-balancing rail-mounted crane anchoring device according to claim 2, characterized in that: It also includes a rotating shaft and a baffle; a rotating shaft is vertically provided between the middle of the lower surface of the floating plate and the upper surface of the lower box, and the floating plate is horizontally rotatably connected to the lower box through the rotating shaft; the upper end of the rotating shaft extends vertically upward beyond the upper surface of the floating plate, and a circular baffle is coaxially fitted on the part of the rotating shaft extending beyond the floating plate, and the baffle is used to limit the floating plate.

4. The self-balancing rail-mounted crane anchoring device according to claim 1, characterized in that: Each pin is integrally formed from a vertically and horizontally arranged upper rectangular plate, a middle equilateral triangular plate, and a lower rectangular plate, aligned from top to bottom. The thickness of each upper rectangular plate, middle equilateral triangular plate, and lower rectangular plate is consistent. The horizontal width of each lower rectangular plate is consistent with the side length of the corresponding middle equilateral triangular plate, and its upper end face is aligned with one side of the corresponding middle equilateral triangular plate. The horizontal width of each upper rectangular plate is less than the side length of the corresponding middle equilateral triangular plate, and the other two sides of each middle equilateral triangular plate are vertically upward and aligned with the lower end face of the corresponding upper rectangular plate. A matching triangular groove is vertically embedded and penetrated in the middle of the middle equilateral triangular plate of each pin, thereby reducing the weight of the corresponding pin through the triangular groove.

5. A self-balancing rail-mounted crane anchoring device according to claim 4, characterized in that: On the upper surface of the floating plate, a first slot is vertically embedded through each pin position. Each first slot matches the upper rectangular plate corresponding to the pin, and its length and width are 5mm larger than the width and thickness of the corresponding upper rectangular plate, respectively. It is also ensured that the length of each first slot is less than the side length of the corresponding central equilateral triangle plate.

6. A self-balancing rail-mounted crane anchoring device according to claim 5, characterized in that: It also includes pins; on the upper rectangular plate front surface of each pin, a pin hole matching the pin is vertically opened at its upper end, and each pin is coaxially inserted into the corresponding pin hole and vertically hinged to the control end of the corresponding control component. Each control component is installed at the corresponding position on the upper surface of the lower box and does not interfere with the horizontal rotation of the floating plate. Under the drive of the control component, the pin slides vertically up and down with the floating plate along the corresponding first slot, and the vertical upward movement of the corresponding pin is limited by the cooperation of the central equilateral triangular plate and the first slot.

7. The self-balancing rail-mounted crane anchoring device according to claim 5, characterized in that: It also includes a bottom plate; a bottom plate is horizontally provided on the front and rear surfaces of the lower housing near its lower end. The position of each bottom plate corresponds to the position of the corresponding pin, and its lower surface is flush with the lower surface of the lower housing. It is symmetrically arranged relative to the floating plate in the horizontal longitudinal state. The lateral length of each bottom plate is greater than the side length of the equilateral triangle plate in the middle of the corresponding pin, and its longitudinal width is sufficient to cover the corresponding pin. A second slot is vertically embedded and penetrated on the upper surface of each bottom plate relative to each pin position. Each second slot matches one side of the equilateral triangle plate in the middle of the corresponding pin, and its length and width are 5mm larger than the side length and thickness of the corresponding equilateral triangle plate, respectively. This allows the lower rectangular plate of the pin to slide vertically downward through the corresponding second slot and then be inserted into the corresponding anchoring seat. The bottom plate ensures the stability of the anchoring operation.

8. A self-balancing track-bound crane anchoring device according to claim 7, characterized in that: Each anchoring seat is positioned corresponding to the position of each pin, and the two anchoring seats are symmetrically arranged on the front and rear sides of the lower housing. A third slot is vertically embedded in the upper surface of each anchoring seat relative to each pin position. Each third slot matches the lower rectangular plate of the corresponding pin, and its length and width are 5-10 mm larger than the width and thickness of the corresponding lower rectangular plate, respectively. This allows the lower rectangular plate of the pin to pass through the corresponding second slot and then be inserted into the third slot of the corresponding anchoring seat, thus achieving the anchoring action.

9. A self-balancing rail-mounted crane anchoring device according to claim 8, characterized in that: The vertical length of each pin must ensure that when it descends to the lower limit position, the lower rectangle of the pin is inserted into the third slot of the corresponding anchor seat.

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