Load brake device and heavy load climbing machine

Abstract

This invention provides a heavy-duty braking device and a heavy-duty climbing machine, relating to the field of heavy-duty braking technology. The heavy-duty braking device includes a column brake plate arranged along the axial direction of a column, an electromagnetic brake that can be locked onto the column brake plate, and a horizontal connecting seat, a horizontal pin, a rotary connecting seat, a rotary pin, and a load connecting seat connected in sequence to the electromagnetic brake. The load connecting seat is connected to the load. This invention allows the load to rotate around the rotary pin with the load connecting seat, and also to move relative to the horizontal connecting seat along the length of the horizontal pin, along with the load connecting seat, the rotary pin, and the rotary connecting seat. This changes the center of gravity of the load, which can change with the straightness and concentricity deviation of the column brake plate to adapt to changes in the straightness and concentricity of the column. During braking, the load remains symmetrical with respect to the column, reducing the impact of the load on the column. It also has lower requirements for the straightness and concentricity of the column, reducing the manufacturing cost of the column.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty braking technology, and more specifically, to a heavy-duty braking device and a heavy-duty climbing machine. Background Technology

[0002] In construction operations, it is often necessary to use a hoist to lift heavy objects. The object rises along the column under the action of the hoist. When the object needs to be braked at the column, the braking device often uses a clamp to lock the object to the column. This method requires high concentricity and straightness of the column along its entire length. When the object needs to be lifted to a greater height, the column also needs to be built taller. Existing welding technology makes it difficult to guarantee the high precision concentricity and straightness of tall columns. Moreover, when the column is subjected to greater stress or the object is lifted to a greater height, the bending moment on the column itself increases. When the object brakes, the compressive force on the symmetrical area of ​​the column's cross-section increases, resulting in a significant increase in the additional stress on the column. Columns subjected to greater stress or with longer strokes need to have their cross-sectional dimensions passively increased, which increases the design and manufacturing costs of the column. Summary of the Invention

[0003] The problem this invention aims to solve is how to reduce the impact of the weight on the column during braking.

[0004] Therefore, the present invention provides a load-bearing braking device, including a column brake plate, an electromagnetic brake, a horizontal connecting seat, a horizontal pin, a rotary connecting seat, a rotary pin, and a load connecting seat. The column brake plate is used to be connected to the side wall of the column along the axial direction of the column. The side of the electromagnetic brake facing the column brake plate is used to lock onto the column brake plate. The side of the electromagnetic brake away from the column brake plate is connected to the horizontal connecting seat. The horizontal connecting seat is provided with the horizontal pin, which is perpendicular to the column brake plate. The rotary connecting seat is connected to the horizontal pin and is used to move relative to the horizontal connecting seat along the length direction of the horizontal pin. The end of the rotary connecting seat away from the horizontal pin is connected to the rotary pin. The axis of the rotary pin is set along the horizontal direction and is perpendicular to the horizontal pin. The load connecting seat is sleeved on the rotary pin and is used to rotate around the rotary pin. The lower part of the load connecting seat is used to connect a load.

[0005] Optionally, the load braking device further includes a limiting block, which is respectively disposed on both sides of the weight along the axial direction of the horizontal pin, and the rotary connecting seat is used to abut against the limiting block.

[0006] Optionally, the horizontal connecting seat has horizontal connecting plates at both ends on the side away from the column brake plate, and the horizontal connecting plates have horizontal connecting holes. The horizontal pin passes through the horizontal connecting holes and is connected to the horizontal connecting plates.

[0007] Optionally, there are two horizontal pins.

[0008] Optionally, the rotary connecting seat has rotary connecting plates at both ends on the side facing the horizontal connecting seat, and rotary connecting holes are provided on the rotary connecting plates. The horizontal pin passes through the rotary connecting holes and is connected to the rotary connecting plates.

[0009] Optionally, both ends of the rotary pin are provided with shoulders, and both the rotary connecting seat and the weight connecting seat are provided with shaft holes. The rotary pin passes through the two shaft holes, and the two shoulders abut against the weight connecting seat and the rotary connecting seat respectively.

[0010] Optionally, the load-bearing braking device further includes a pad assembly, which includes a convex spherical pad and a concave spherical pad. The convex surface of the convex spherical pad fits into the concave surface of the concave spherical pad. Both the convex spherical pad and the concave spherical pad are sleeved on the rotary pin. The two sides of the pad assembly abut against the side wall of the shaft shoulder near the rotary connecting seat facing the rotary connecting seat and the side wall of the rotary connecting seat facing the horizontal pin, respectively.

[0011] Optionally, the electromagnetic brake has two brake blocks on the side facing the column brake plate, the column brake plate is embedded between the two brake blocks, and the column brake plate does not contact the brake blocks.

[0012] Optionally, the load-bearing braking device further includes a horizontal limiting hoop, which is an open-ended ring. The horizontal limiting hoop is used to be fitted onto the column. The diameter of the horizontal limiting hoop is larger than the diameter of the column. The two ends of the opening of the horizontal limiting hoop are respectively connected to the two sides of the electromagnetic brake.

[0013] Compared with the prior art, the advantages of the load braking device of the present invention are:

[0014] This invention involves installing a column brake plate on the side wall of a column, extending along the axial direction of the column (i.e., along the Z-axis). The straightness and concentricity of the column brake plate are equivalent to the straightness and concentricity of the column. An electromagnetic brake is installed; during braking, the electromagnetic brake engages with the column brake plate, completing the braking process. When the electromagnetic brake is released, the entire load-bearing braking device and the load can be raised and lowered along the column brake plate under the control of the lifting mechanism. The side of the electromagnetic brake away from the column is connected to a horizontal connecting seat. A horizontal pin is provided on the side of the horizontal connecting seat away from the electromagnetic brake, and the horizontal pin is perpendicular to the column brake plate. The shaft extends along the Y-axis. One end of the slewing connector is fitted onto a horizontal pin and can move relative to the horizontal connector along the length of the horizontal pin, i.e., in the Y-axis direction. The end of the slewing connector away from the horizontal pin has a slewing pin, which is located in a horizontal plane and perpendicular to the horizontal pin, extending along the X-axis. The load connector is fitted onto the slewing pin and can rotate around it, i.e., rotate within the plane containing the Y and Z axes. The lower surface of the load connector is connected to the load, allowing the load, along with the load connector, the slewing pin, and the slewing connector, to move relative to the horizontal connector along the length of the horizontal pin. The movement of the weight's center of gravity along the Y-axis is suitable for situations requiring a significant change in the center of gravity. Furthermore, the weight can also rotate around the pivot pin with the weight connector to change its center of gravity along the Y-axis, suitable for situations requiring a smaller change in the center of gravity. This allows for fine-tuning of the weight's center of gravity. Additionally, when the column brake plate deviates vertically, the weight connector and the weight themselves can automatically rotate around the pivot pin under their own weight to accommodate the deviation of the column brake plate. The straightness and concentricity of the column brake plate are equivalent to the straightness and concentricity of the column itself. A change in concentricity indicates that the axis of the column deviates from the Z-axis direction (i.e., there is an offset in the vertical direction), or that the generatrix of the column is curved. The center of gravity of the column, i.e., the brake plate, will shift due to the influence of straightness and concentricity. When the center of gravity of the brake plate shifts in the Y-axis direction, the center of gravity of the weight can change with the shift in the straightness and concentricity of the brake plate to adapt to the change in the straightness and concentricity of the column. This allows the force of the weight on the cross-section of the column to be symmetrical with respect to the center of the cross-section during braking, reducing the impact of the weight on the column. This reduces the requirements for the straightness and concentricity of the column, thus reducing the manufacturing cost of the column.

[0015] In addition, to solve the above problems, the present invention also provides a heavy-duty climbing machine, including the above-mentioned load braking device.

[0016] Compared with the prior art, the beneficial effects of the heavy-duty climbing machine described in this invention are roughly the same as those of the above-mentioned heavy-duty braking device, and will not be repeated here. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the load braking device described in the embodiments of the present invention;

[0018] Figure 2 This is a second structural schematic diagram of the load-bearing braking device described in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Column brake plate; 2-Electromagnetic brake; 31-Horizontal connecting seat; 32-Horizontal pin; 33-Horizontal connecting plate; 41-Rotary connecting seat; 42-Rotary pin; 43-Shoulder; 44-Rotary connecting plate; 5-Weight connecting seat; 51-Limiting block; 61-Convex spherical pad; 62-Concave spherical pad; 7-Horizontal limiting clamp; 8-Column; 9-Weight. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0024] Furthermore, although specific embodiments have been described herein, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways not used in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

[0025] To solve the above problems, such as Figure 1 and Figure 2As shown, the present invention provides a load-bearing braking device, including a column brake plate 1, an electromagnetic brake 2, a horizontal connecting seat 31, a horizontal pin 32, a rotary connecting seat 41, a rotary pin 42, and a load connecting seat 5. The column brake plate 1 is used to connect to the side wall of the column 8 along the axial direction of the column 8. The side of the electromagnetic brake 2 facing the column brake plate 1 is used to lock onto the column brake plate 1. The side of the electromagnetic brake 2 away from the column brake plate 1 is connected to the horizontal connecting seat 31. The horizontal connecting seat 31 is provided with the horizontal pin 32. The horizontal pin 32 is perpendicular to the column brake plate 1. The rotary connecting seat 41 is connected to the horizontal pin 32 and is used to move relative to the horizontal connecting seat 31 along the length direction of the horizontal pin 32. The end of the rotary connecting seat 41 away from the horizontal pin 32 is connected to the rotary pin 42. The axis of the rotary pin 42 is set along the horizontal direction and is perpendicular to the horizontal pin 32. The weight connecting seat 5 is sleeved on the rotary pin 42 and is used to rotate around the rotary pin 42. The lower part of the weight connecting seat 5 is used to connect the weight 9.

[0026] In this embodiment, a column brake plate 1 is installed on the side wall of the column 8. The column brake plate 1 extends along the axial direction of the column 8 (i.e., along the Z-axis direction). The straightness and concentricity of the column brake plate 1 are the same as the straightness and concentricity of the column 8. An electromagnetic brake 2 is provided. During braking, the electromagnetic brake 2 can lock onto the column brake plate 1 to complete the braking. When the electromagnetic brake 2 is released, under the control of the lifting mechanism, the entire load braking device and the load 9 can be raised and lowered along the column brake plate 1. The side of the electromagnetic brake 2 away from the column 8 is connected to the horizontal connecting seat 31. The side of the horizontal connecting seat 31 away from the electromagnetic brake 2 is provided with a horizontal pin 32, which is perpendicular to the column brake plate 1. The horizontal pin 32 extends along the Y-axis. One end of the rotary connecting seat 41 is fitted onto the horizontal pin 32 and can move relative to the horizontal connecting seat 31 along the length of the horizontal pin 32, i.e., in the Y-axis direction. A rotary pin 42 is provided at the end of the rotary connecting seat 41 away from the horizontal pin 32. The rotary pin 42 is located in the horizontal plane and perpendicular to the horizontal pin 32, i.e., the rotary pin 42 extends along the X-axis. The weight connecting seat 5 is fitted onto the rotary pin 42 and can rotate around the rotary pin 42, i.e., rotate in the plane containing the Y and Z axes. The lower surface of the weight connecting seat 5 is connected to the weight 9. The weight 9, along with the weight connecting seat 5, the rotary pin 42, and the rotary connecting seat 41, can move relative to the horizontal plane. The flat connecting seat 31 moves along the length of the horizontal pin 32, changing the center of gravity position of the weight 9 in the Y-axis direction. This method is suitable for situations where a large change in the center of gravity position is required. Furthermore, the weight 9 can also rotate with the weight connecting seat 5 around the rotary pin 42, changing the center of gravity position of the weight 9 in the Y-axis direction. This method is suitable for situations where a small change in the center of gravity position is required, allowing for fine-tuning of the center of gravity position of the weight 9. Moreover, when the column brake plate 1 is offset in the vertical direction, the weight connecting seat 5 and the weight 9 can automatically rotate around the rotary pin 42 under their own weight to adapt to the offset of the column brake plate 1. The straightness and concentricity of the column brake plate 1 are the same as the straightness and concentricity of the column 8. Changes in the straightness and concentricity of column 8 indicate that the axis of column 8 deviates from the Z-axis direction (i.e., there is an offset in the vertical direction), or that the generatrix of column 8 is curved. The center of gravity of column 8, i.e., column brake plate 1, will be offset by the straightness and concentricity. When the center of gravity of column brake plate 1 is offset in the Y-axis direction, the center of gravity of weight 9 can change with the offset of the straightness and concentricity of column brake plate 1 to adapt to the change in the straightness and concentricity of column 8. This allows the force of weight 9 on the cross section of column 8 during braking to be symmetrical with respect to the center of the cross section, reducing the influence of weight 9 on column 8. This reduces the requirements for the straightness and concentricity of column 8 and lowers the manufacturing cost of column 8.

[0027] Specifically, the moving distance of the weight connecting seat 5, the slewing pin 42, and the slewing connecting seat 41 along the length of the horizontal pin 32 can be between 0 and 50 mm.

[0028] Optionally, such as Figure 1 As shown, the load braking device also includes a limiting block 51, which is used to be respectively disposed on both sides of the weight 9 along the axial direction of the horizontal pin 32, and the rotary connecting seat 41 is used to abut against the limiting block 51.

[0029] In this embodiment, by setting limiting blocks 51 on both sides of the weight 9 along the horizontal pin 32, that is, on both sides along the Y-axis, when the weight 9 rotates with the weight connecting seat 5 around the rotary pin 42, the limiting blocks 51 also rotate with the weight 9. The rotary connecting seat 41 is located on the rotation path of the limiting blocks 51. During the rotation, the limiting blocks 51 will contact the rotary connecting seat 41. The rotary connecting seat 41 hinders the rotation of the limiting blocks 51, thereby limiting the rotation angle of the weight 9.

[0030] Specifically, the distance between the rotary connecting seat 41 and the limiting block 51 in the vertical direction, i.e. the Z-axis direction, is 30mm, and the rotation angle of the weight 9 around the rotary pin 42 is ±3°.

[0031] Optionally, such as Figure 2 As shown, the horizontal connecting seat 31 has horizontal connecting plates 33 on both ends of the side away from the column brake plate 1. The horizontal connecting plate 33 has a horizontal connecting hole, and the horizontal pin 32 passes through the horizontal connecting hole and is connected to the horizontal connecting plate 33.

[0032] In this embodiment, two horizontal connecting plates 33 are provided on both sides of the end of the horizontal connecting seat 31 away from the column brake plate 1. The two horizontal connecting plates 33 are arranged along the Y-axis direction. The horizontal connecting plates 33 are provided with horizontal connecting holes with diameters corresponding to the diameters of the horizontal pins 32. The horizontal pins 32 pass through the two horizontal connecting holes and are connected to the horizontal connecting plates 33 and the horizontal connecting seat 31 as a whole, resulting in a simple connection structure.

[0033] Optionally, such as Figure 1 As shown, there are two horizontal pins 32.

[0034] In this embodiment, by setting two horizontal pins 32, correspondingly, there are also two horizontal connecting holes on the horizontal connecting plate 33. The rotary connecting seat 41 is connected to the horizontal connecting seat 31 through the two horizontal pins 32, preventing the rotary connecting seat 41 from rotating around the horizontal pins 32 in the vertical plane, that is, rotating in the Z-axis and X-axis plane.

[0035] Optionally, such as Figure 1 and Figure 2As shown, the rotary connecting seat 41 has rotary connecting plates 44 at both ends on the side facing the horizontal connecting seat 31. Rotary connecting plates 44 have rotary connecting holes, and the horizontal pin 32 passes through the rotary connecting holes and is connected to the rotary connecting plate 44.

[0036] In this embodiment, two rotary connecting plates 44 are provided at both ends of the rotary connecting seat 41 facing the horizontal connecting seat 31. The two rotary connecting plates 44 are arranged along the Y-axis direction. Rotary connecting holes with a diameter slightly larger than the diameter of the horizontal pin 32 are opened on the rotary connecting plates 44. The horizontal pin 32 passes through the two rotary connecting holes and is connected to the rotary connecting seat 41 as a whole. The connection structure is simple, and the rotary connecting seat 41 can move along the horizontal pin 32 through the rotary connecting holes.

[0037] Specifically, the pin shaft has threads extending beyond the outer surface of the rotary connecting plate 44, and nuts are fitted onto the threads. The two nuts limit the horizontal pin shaft 32 to prevent it from moving within the rotary connecting hole.

[0038] Optionally, such as Figure 1 and Figure 2 As shown, both ends of the rotary pin 42 are provided with shoulders 43, and both the rotary connecting seat 41 and the weight connecting seat 5 are provided with shaft holes. The rotary pin 42 passes through the two shaft holes, and the two shoulders 43 abut against the weight connecting seat 5 and the rotary connecting seat 41 respectively.

[0039] In this embodiment, shaft holes are opened on the rotary connecting seat 41 and the weight connecting seat 5. The two shaft holes are coaxially arranged and both are opened along the X-axis direction. The rotary pin 42 can pass through the two shaft holes and connect with the rotary connecting seat 41 and the weight connecting seat 5. Two shoulders 43 are provided at both ends of the rotary pin 42. The shoulder 43 on the side closer to the column 8 abuts against the rotary connecting seat 41, and the shoulder 43 on the side away from the column 8 abuts against the weight connecting seat 5. The weight connecting seat 5 and the rotary connecting seat 41 are restricted between the two shoulders 43 to prevent the rotary pin 42 from moving relative to the weight connecting seat 5 and the rotary connecting seat 41 in the X-axis direction.

[0040] Optionally, such as Figure 1 As shown, the load braking device also includes a pad assembly, which includes a convex spherical pad 61 and a concave spherical pad 62. The convex surface of the convex spherical pad 61 fits against the concave surface of the concave spherical pad 62. Both the convex spherical pad 61 and the concave spherical pad 62 are sleeved on the rotary pin 42. The two sides of the pad assembly abut against the side wall of the shoulder 43 near the rotary connecting seat 41 facing the rotary connecting seat 41 and the side wall of the rotary connecting seat 41 facing the horizontal pin 32, respectively.

[0041] In this embodiment, a pad assembly is fitted between the rotary connecting seat 41 and the shoulder 43 near the column 8 on the rotary pin 42. The pad assembly includes a convex spherical pad 61 and a concave spherical pad 62 that fit together. The rotary connecting seat 41, the convex spherical pad 61, the concave spherical pad 62, and the shoulder 43 abut in sequence; or the shoulder 43, the convex spherical pad 61, the concave spherical pad 62, and the rotary connecting seat 41 abut in sequence, with the convex surface of the convex spherical pad 61 fitting against the concave surface of the concave spherical pad 62. When the weight 9 rotates with the weight connecting seat 5, the shoulder 43 is squeezed against the rotary connecting seat 41, and the concave spherical pad 62 and the convex spherical pad 61 are also squeezed. The concave and convex surfaces can rotate relative to each other under force, and can slide relative to each other when squeezed, so that the shoulder 43 bears uniform shear force or bending moment, thus optimizing the stress condition of the shoulder 43 of the rotary pin 42.

[0042] Specifically, lubricant can be applied between the convex and concave surfaces to facilitate relative rotation between them.

[0043] Optionally, such as Figure 1 As shown, the electromagnetic brake 2 has two brake blocks on one side facing the column brake plate 1, and the column brake plate 1 is embedded between the two brake blocks. The column brake plate 1 does not contact the brake blocks.

[0044] In this embodiment, two brake blocks are arranged on the side of the electromagnetic brake 2 facing the column brake plate 1. The two brake blocks are arranged along the Y-axis and there is a certain gap between the two brake blocks. The column brake plate 1 can be inserted into the gap. There is a certain distance between the side wall of the column brake plate 1 and the two brake blocks. The column brake plate 1 does not contact the two brake blocks. This gap allows the column brake plate 1 to be offset in the Y-axis direction. After the column brake plate 1 is offset, it is still between the two brake blocks and does not affect the electromagnetic brake 2 from climbing along the column brake plate 1.

[0045] In addition, there is a certain gap between the column brake plate 1 and the electromagnetic brake 2 in the X-axis direction, so that when the center of gravity of the column brake plate 1 shifts in the X-axis direction, it will not hinder the electromagnetic brake 2 from climbing along the column brake plate 1.

[0046] Specifically, the distance between the two brake blocks can be 9mm.

[0047] Optionally, such as Figure 2 As shown, the load-bearing braking device also includes a horizontal limiting clamp 7, which is a circular ring with one end open. The horizontal limiting clamp 7 is used to be sleeved on the column 8. The diameter of the horizontal limiting clamp 7 is larger than the diameter of the column 8. The two ends of the opening of the horizontal limiting clamp 7 are respectively connected to the two sides of the electromagnetic brake 2.

[0048] In this embodiment, a horizontal limiting hoop 7 is fitted around the periphery of the column 8. The horizontal limiting hoop 7 is a circular ring structure with one open end, and the open end is connected to the connecting segment of the electromagnetic brake 2. The horizontal limiting hoop 7 can climb along the column 8 with the electromagnetic brake 2. The diameter of the horizontal limiting hoop 7 is 24mm larger than the diameter of the column 8. When the electromagnetic brake 2 is displaced in the horizontal direction, the horizontal limiting hoop 7 will contact the periphery of the column 8 and generate friction, which will hinder the climbing. The horizontal limiting hoop 7 can prevent the hoist from causing excessive horizontal displacement of the heavy object 9.

[0049] Another embodiment of the present invention provides a heavy-duty climbing machine that includes the above-described load braking device.

[0050] Compared with the prior art, the beneficial effects of the heavy-duty climbing machine in this embodiment are roughly the same as those of the above-mentioned heavy-duty braking device, and will not be repeated here.

[0051] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A load-bearing braking device, characterized in that, The system includes a column brake plate (1), an electromagnetic brake (2), a horizontal connecting seat (31), a horizontal pin (32), a rotary connecting seat (41), a rotary pin (42), and a load connecting seat (5). The column brake plate (1) is used to connect to the side wall of the column (8) along the axial direction of the column (8). The side of the electromagnetic brake (2) facing the column brake plate (1) is used to lock onto the column brake plate (1). The side of the electromagnetic brake (2) away from the column brake plate (1) is connected to the horizontal connecting seat (31). The horizontal connecting seat (31) is provided with the horizontal pin (32). 2) Perpendicular to the column brake plate (1), the rotary connecting seat (41) is connected to the horizontal pin (32) and is used to move relative to the horizontal connecting seat (31) along the length direction of the horizontal pin (32). The end of the rotary connecting seat (41) away from the horizontal pin (32) is connected to the rotary pin (42). The axis of the rotary pin (42) is set along the horizontal direction and is perpendicular to the horizontal pin (32). The weight connecting seat (5) is sleeved on the rotary pin (42) and is used to rotate around the rotary pin (42). The lower part of the weight connecting seat (5) is used to connect the weight (9). The electromagnetic brake (2) has two brake blocks on the side facing the column brake plate (1), and the column brake plate (1) is embedded between the two brake blocks. The column brake plate (1) does not contact the brake blocks. It also includes a horizontal limiting hoop (7), which is a ring with one end open. The horizontal limiting hoop (7) is used to be fitted on the column (8). The diameter of the horizontal limiting hoop (7) is larger than the diameter of the column (8). The two ends of the opening of the horizontal limiting hoop (7) are respectively connected to the two sides of the electromagnetic brake (2).

2. The load-bearing braking device according to claim 1, characterized in that, It also includes a limiting block (51), which is used to be respectively disposed on both sides of the weight (9) along the axial direction of the horizontal pin (32), and the rotary connecting seat (41) is used to abut against the limiting block (51).

3. The load-bearing braking device according to claim 1, characterized in that, The horizontal connecting seat (31) is provided with horizontal connecting plates (33) at both ends on the side away from the column brake plate (1). The horizontal connecting plate (33) is provided with a horizontal connecting hole. The horizontal pin (32) passes through the horizontal connecting hole and is connected to the horizontal connecting plate (33).

4. The load-bearing braking device according to claim 1, characterized in that, There are two horizontal pins (32).

5. The load-bearing braking device according to claim 3, characterized in that, The rotary connecting seat (41) has rotary connecting plates (44) at both ends on the side facing the horizontal connecting seat (31). The rotary connecting plate (44) has a rotary connecting hole, and the horizontal pin (32) passes through the rotary connecting hole and is connected to the rotary connecting plate (44).

6. The load-bearing braking device according to claim 1, characterized in that, Both ends of the rotary pin (42) are provided with shoulders (43), and both the rotary connecting seat (41) and the weight connecting seat (5) are provided with shaft holes. The rotary pin (42) passes through the two shaft holes, and the two shoulders (43) abut against the weight connecting seat (5) and the rotary connecting seat (41) respectively.

7. The load-bearing braking device according to claim 6, characterized in that, It also includes a pad assembly, which includes a convex spherical pad (61) and a concave spherical pad (62). The convex surface of the convex spherical pad (61) fits against the concave surface of the concave spherical pad (62). The convex spherical pad (61) and the concave spherical pad (62) are both sleeved on the rotary pin (42). The two sides of the pad assembly abut against the side wall of the shoulder (43) near the rotary connecting seat (41) facing the rotary connecting seat (41) and the side wall of the rotary connecting seat (41) facing the horizontal pin (32), respectively.

8. A heavy-duty climbing machine, characterized in that, Includes the load braking device as described in any one of claims 1 to 7.

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