Pendant rope fixing device, bracket and crane

Abstract

The present invention provides a pendant rope fixing device, bracket, and crane that make the components attached to the boom or the pendant rope less susceptible to damage. [Solution] A pendant rope fixing device for fixing a pendant rope in a transport state, comprising a first fixing device for fixing a first portion of the pendant rope, the first fixing device having a receiving surface for receiving the pendant rope and a first inclined surface that slopes downward from at least one of the front and rear ends of the receiving surface.

Description

Technical Field

[0001] The present invention relates to a pendant rope fixing device, a bracket, and a crane.

Background Art

[0002] Patent Document 1 describes a fixing device for arranging and fixing a pendant rope on a boom. With this fixing device, the pendant rope can be transported together with the boom.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above conventional fixing device, when removing the fixing of the pendant rope and connecting the pendant rope to lift the boom, for example, the pendant rope may be caught and damaged on the members added to the boom (such as the fixing device or the skywalk) due to the pendant rope shifting in the longitudinal direction.

[0005] An object of the present invention is to provide a pendant rope fixing device, a bracket, and a crane that are less likely to cause damage to the members added to the boom or the pendant rope.

Means for Solving the Problems

[0006] The pendant rope fixing device according to the present invention is a pendant rope fixing device that fixes the pendant rope in the transportation state, comprising a first fixing device for fixing the first part of the pendant rope, wherein the first fixing device The receiving surface for receiving the aforementioned pendant rope, A first inclined surface that slopes downward from at least one of the front and rear ends of the receiving surface, It holds.

[0007] The bracket according to the present invention is A bracket attached to at least one of the front and rear ends of a skywalk provided on a boom, It has a second inclined surface that slopes downward from the scaffolding of the aforementioned skywalk.

[0008] A crane according to one aspect of the present invention is It is equipped with the above-mentioned pendant rope fixing device.

[0009] Another embodiment of the present invention is a crane, The bracket shown above, The aforementioned skywalk and, It is equipped with. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a pendant rope fixing device, bracket, and crane that make the members attached to the boom or the pendant rope less susceptible to damage. [Brief explanation of the drawing]

[0011] [Figure 1] This is an overall view (A), a plan view of the boom (B), and a side view of the boom (C) showing a crane according to an embodiment of the present invention. [Figure 2] These are perspective views (A) and side views (B) showing the first fixing device in the transport state. [Figure 3] This is a side view showing the first fixing device in the working state. [Figure 4] This is an exploded perspective view of the configuration with the connector removed from the first fixing device. [Figure 5] These are a plan view (A), a rear view (B), and a side view (C) showing the components integrated with the support of the first fixing device. [Figure 6]It is a plan view (A), a rear view (B), and a side view (C) showing a clamp member. [Figure 7] It is a perspective view (A) and a side view (B) showing a second fixing device in the transportation state. [Figure 8] It is a side view showing a second fixing device in the working state.

Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this specification, each direction of the boom 4, the pendant rope 20, and the components associated with the boom 4 is represented by the front, rear, left, right, up, and down directions when the boom 4 lies horizontally. Laying the boom 4 horizontally means that the frame material on the upper side of the boom 4 is horizontal. The front, rear, left, and right are the front, rear, left, and right of a person standing on the boom 4 facing the tip of the boom 4.

[0013] In addition, the state in which the crane 1 can be transported between the machine yard and the site is called the "transportation state of the crane 1" or simply the "transportation state", and the state in which the crane 1 can perform the load carrying work is called the "working state of the crane 1" or simply the "working state".

[0014] <Configuration of Crane> FIG. 1 is an overall view (A), a plan view (B) of the boom, and a side view (C) of the boom showing a crane according to an embodiment of the present invention. The crane 1 according to the embodiment of the present invention is a crawler crane capable of self-propulsion, and includes a lower traveling body 2 capable of traveling, an upper slewing body 3 provided so as to be slewing with respect to the lower traveling body 2, a boom 4 connected to the upper slewing body 3 so as to be able to rise and fall, a live mast 6 supporting the boom 4, a pendant rope 20 connecting the live mast 6 and the boom 4, a winch (not shown) for winding or paying out the wire rope W1, and a counterweight 9 mounted on the rear part of the upper slewing body 3. A cab 8 in which a driver drives is mounted on the upper slewing body 3. The lower traveling body 2 and the upper slewing body 3 correspond to an example of the main body according to the present invention.

[0015] The boom 4 is composed of a plurality of detachable parts connected together. That is, the boom 4 includes a front-end boom 4a, an intermediate boom 4b, and a rear-end boom 4c, and they are connected in this order from the side closer to the upper slewing body 3. In the example of FIG. 1, the boom 4 includes one intermediate boom 4b, but it may also be configured to include a plurality of intermediate booms 4b.

[0016] When transporting the crane 1 between the machine yard and the construction site, the boom 4 is removed from the upper slewing body 3 and transported in a disassembled state for each part (4a - 4c).

[0017] The pendant rope 20 includes two pendant ropes 20 arranged apart in the left - right direction (see FIG. 1(B)). Note that the number of pendant ropes 20 connecting the live mast 6 and the boom 4 may be one, or three or more. Hereinafter, one of the plurality of pendant ropes 20 will be described, but the other pendant ropes 20 among the plurality also have the same configuration.

[0018] The pendant rope 20 is configured to be separable into a plurality corresponding to each part (4a - 4c) of the boom 4. For example, the pendant rope 20 is separable into an intermediate pendant rope 22 corresponding to the intermediate boom 4b, a pendant rope 21 connected rearward, and a pendant rope 23 connected forward. At the front end and the rear end of each of the pendant ropes 21, 22, 23 of each part, metal fitting parts 25 and metal fitting parts 26 having pin joints that can be pin - connected to each other are provided respectively.

[0019] When disassembling and transporting the boom 4, each of the plurality of separated pendant ropes 21 - 23 is fixed to each of the booms 4a - 4c separated by part. Hereinafter, the fixing structure between the intermediate boom 4b and the intermediate pendant rope 22 will be described, but the same structure may be applied to the structure of fixing the pendant ropes 21, 23 to the front - end boom 4a or the rear - end boom 4c respectively.

[0020] As shown in Figures 1(B) and 1(C), the crane 1 includes a skywalk 5 attached to the top of the boom 4b and a bracket 50 attached to the skywalk 5. The crane 1 further includes a pendant rope fixing device 60 for fixing a pendant rope 22 to the boom 4b. The pendant rope fixing device 60 includes a first fixing device 61 for fixing the rear end of the pendant rope 22 (corresponding to an example of Part 1 of the present invention), a second fixing device 62 for fixing the front end of the pendant rope 22 (corresponding to an example of Part 2 of the present invention), and a third fixing device 63 for fixing the middle part of the pendant rope 22. The first fixing device 61 is attached to a frame member 411 at the rear and upper part of the boom 4b, the second fixing device 62 is attached to a frame member 412 at the front and upper part of the boom 4b, and the third fixing device 63 is attached to a diagonal member 413 midway and above the boom 4b in the front-rear direction. The first fixing device 61 and the second fixing device 62 are mounted at different positions in the left-right direction. This mounting position prevents the pendant ropes fixed to the first fixing device 61 and the second fixing device 62 of boom 4b from interfering with the pendant ropes fixed to the first fixing device 61 and the second fixing device 62 of the front and rear booms when connecting boom 4b to the front and rear booms.

[0021] Figure 2 shows a perspective view (A) and a side view (B) of the first fixing device in transport condition. Figure 3 is a side view of the first fixing device in working condition. Figure 4 is an exploded perspective view of the configuration of the first fixing device excluding the connector. Figure 5 shows a top view (A), a rear view (B), and a side view (C) of the components integrated with the support of the first fixing device. Figure 6 shows a top view (A), a rear view (B), and a side view (C) of the clamp member. Figure 7 shows a perspective view (A) and a side view (B) of the second fixing device in transport condition. Figure 8 is a side view of the second fixing device in working condition. The first fixing device 61, the second fixing device 62, and the third fixing device 63 are common parts with the same configuration. By using common parts, the manufacturing cost of the pendant rope fixing device 60 can be reduced.

[0022] <bracket> The Skywalk 5 is a plate-like structure that provides a platform for workers to walk on when the boom 4b is collapsed. The Skywalk 5 includes a main walk 5a that extends in the front-to-back direction from the center of the boom 4b in the left-to-right direction, and a transverse walk 5b that extends from the center of the boom 4b in the left-to-right direction to at least one side (see Figure 1(B)). The pendant rope 22 is fixed so as to overlap the transverse walk 5b in the vertical direction. The transverse walk 5b is located near the metal fitting 26 of the fixed pendant rope 22 (see Figure 7(A)).

[0023] As shown in Figures 7(A) and 7(B), the bracket 50 is attached to at least one of the front and rear ends of the skywalk 5 and has an inclined surface 51 (corresponding to the second inclined surface) that slopes downward from the scaffolding of the skywalk 5. In this embodiment, the bracket 50 is provided at the front end of the transverse walk 5b.

[0024] The metal fittings 25 and 26 of the pendant rope 22 include joints (e.g., crimped parts) 25a and 26a that connect the pin joint portion to the rope portion 22a (see Figures 2(B) and 7(B)). The joints 25a and 26a are thicker than the rope portion 22a, and there are stepped sections D1 and D2 before and after the joints 25a and 26a. Therefore, when switching the pendant rope 22 between the working state and the transport state, and when raising the boom 4b after switching to the working state, if the pendant rope 22 shifts in the front-rear direction, there is a risk that the stepped sections D1 and D2 may get caught on the pendant rope fixing device 60 or the end of the skywalk 5, damaging the metal fittings 25. On the other hand, in this embodiment, the inclined surface 51 of the bracket 50 makes it less likely for the stepped sections D1 and D2 to get caught on the end of the skywalk 5 even if the pendant rope 22 shifts in the front-rear direction, thus preventing damage to the metal fittings 26.

[0025] <First fixing device> The first fixing device 61 (see Figures 2 and 3) is attached to the rear and upper frame member 411 of the boom 4b. The first fixing device 61 has a receiving surface 611 for receiving the pendant rope 22 and a rear inclined surface 612 (corresponding to the first inclined surface) that slopes downward from the rear end of the receiving surface 611. The first fixing device 61 may further have a front inclined surface 613 that slopes downward from the front end of the receiving surface 611. The receiving surface 611 is located on the frame member 411 of the boom 4b. The receiving surface 611 is the surface on which the joint portion 25a of the metal fitting portion 25 rests in the transport state. The receiving surface 611 is a substantially horizontal surface when the boom 4b is horizontally tilted. The rear inclined surface 612 may extend close to the rear end of the frame member 411.

[0026] The rear inclined surface 612 makes it less likely for the pendant rope 22 to shift in the front-rear direction when switching the pendant rope 22 between the working state and the transport state, and when raising the boom 4b after switching to the working state, to catch on the end of the receiving surface 611, even if the pendant rope 22 shifts in the front-rear direction. Thus, damage to the pendant rope fixing device 60 and the pendant rope fixing device 25 can be suppressed.

[0027] The first fixing device 61 further includes a connecting portion 615 that connects the receiving surface 611 to the boom 4b. The connecting portion 615 is connected to the rear and upper frame member 411 of the boom 4b and supports the receiving surface 611 and the other parts including the rear inclined surface 612. When the boom 4b is horizontally tilted, the receiving surface 611 and the upper end of the connecting portion 615 are at the same height. The same height is not limited to strictly identical heights, but is defined as the same height with an error of ±5 mm allowed.

[0028] Due to the above-mentioned upper end height of the connecting portion 615, when switching the pendant rope 22 between the working state and the transport state, and when raising the boom 4b after switching to the working state, even if the pendant rope 22 shifts in the left-right direction, the metal fitting portion 25 is less likely to get caught on the end of the receiving surface 611 or on the metal fitting portion 25, thereby preventing damage to the metal fitting portion 25. The two pendant ropes 22 corresponding to the boom 4b are fixed in an arrangement that is not parallel in a plan view, but gradually widens in the forward or backward direction, as shown in Figure 1(B). Therefore, when switching the pendant rope 22 between the transport state and the working state, and when raising the boom 4b after switching to the working state, it is preferable that there is no structure that makes it easy for the metal fitting portion 25 to get caught in either the front-back direction or the left-right direction.

[0029] The width of the gap between the receiving surface 611 and the connecting portion 615 may be less than half the thickness of the joint portion 25a. Furthermore, the upper end of the connecting portion 615 may have a rounded shape in the left-right direction. With such a configuration, when moving the metal fitting portion 25 of the pendant rope 22 from a position off-center in the left-right direction onto the receiving surface 611, the metal fitting portion 25 can be shifted via the rounded upper end of the connecting portion 615, and furthermore, it can be smoothly moved from the upper end of the connecting portion 615 onto the receiving surface 611. Therefore, even in such cases, damage to the metal fitting portion 25 can be suppressed.

[0030] The connecting portion 615 specifically includes a base member 615a connected to the receiving surface 611, and a connector 615b that can be connected to the base member 615a with a frame member 411 (corresponding to a component of the boom 4) in between. For example, the connector 615b is a U-bolt, and the base member 615a is a member having through holes (for example, through holes that are elongated in shape when viewed in the insertion direction) through which the two bolt ends of the U-bolt pass. The base member 615a is positioned diagonally with respect to the receiving surface 611 (see Figure 2(B)). Positioning diagonally means that the main surface (the largest surface) of the base member 615a is at an angle to the receiving surface 611.

[0031] The diagonal arrangement prevents the base member 615a from protruding above the frame member 411 of the boom 4b, and allows the upper end of the connecting part 615 and the receiving surface 611 to be positioned at the same height. Furthermore, the rear inclined surface 612, the receiving surface 611, and the base member 615a can be attached to the frame member 411 while maintaining their integrated configuration. In other words, if the base member 615a is positioned vertically, as shown by the dotted line H1 in Figure 2(B), a portion of the base member 615a will protrude significantly above the frame member 411. Also, if the base member 615a is positioned horizontally downward, as shown by the dotted line H2 in Figure 2(B), it becomes difficult to pass the frame member 411 between the base member 615a and the rear inclined surface 612. Also, if the base member 615a is positioned horizontally upward, as shown by the dotted line H3 in Figure 2(B), the tip of the connector 615b will protrude above the frame member 411.

[0032] The first fixing device 61 further includes a clamp member 617 that clamps and fixes the metal fitting portion 25 of the pendant rope 22 (see also Figures 4 to 6). Generally, the pendant rope 22 can also be fixed by pin-connecting the pin joint of the metal fitting portion 25 to the fixing device. However, in this case, when fixing, it is necessary to align the direction of the pin hole of the pin joint of the metal fitting portion 25 with the connection part of the fixing device, and if they do not align, it is necessary to twist them. However, the structure that clamps and fixes with the clamp member 617 eliminates the need for the above-mentioned trouble.

[0033] As shown in Figure 4, the clamp member 617 is a gate-shaped member having, for example, left and right vertical members 617a and an upper horizontal member 617b. The lower end of the vertical member 617a has a detachable portion 617c. The detachable portion 617c is detachable from the support 616 which is integrated with the base member 615a, and can, for example, have a pin hole that allows for pin connection.

[0034] As shown in Figures 2(B) and 3(A), the clamp member 617 can also be connected upside down. Connecting upside down means that the clamp member 617 can be connected with its orientation changed vertically, based on the same connection point. More specifically, the clamp member 617 has a connection part that can be connected with a pin, and by removing the pin, changing its orientation, and reinserting the pin, it can be connected to the base member 615a with its orientation changed vertically. With this configuration, by connecting it from above, the pendant rope 22 can be fixed in the transport state, and by connecting it from below, a convenient arrangement can be achieved in the working state. A convenient arrangement is one that does not protrude outside the boom 4b. Upside down connection is achieved by removing the pin for pin connection, temporarily removing the clamp member 617 from the support 616, reversing the clamp member 617, and then reconnecting it with the pin.

[0035] The clamp member 617 may be configured to be rotatably connected via the attachment / detachment portion 617c. During transport, an inertial force that causes the pendant rope 22 to shift in the front-to-back direction may act upon it. In such cases, the rotatable connection of the clamp member 617 allows the inertial force to be released.

[0036] The support 616 is provided with a stopper 616a that prevents the clamp member 617 from rotating outward from the boom 4b. The stopper 616a corresponds to a limiting part that restricts the range of motion of the clamp member 617 when the clamp member 617 is connected downward. With this configuration, the clamp member 617 can be kept inside the boom 4b even when the boom 4 is upright.

[0037] The clamp member 617 has inclined surfaces S1 and S2 at the front and rear ends of the transverse member 617b that are inclined to one side (see Figure 6). The inclination to one side is in the direction away from the pendant rope 22 that is clamped by the clamp member 617. The inclined surfaces S1 and S2 may be formed by bending a plate member. The inclined surfaces S1 and S2 make it less likely for the metal fitting 25 to get caught on the transverse member 617b of the clamp member 617, even if the pendant rope 22 shifts in the front-rear direction due to inertial force during transport, thus preventing the metal fitting 25 from being worn down.

[0038] The clamp member 617 has inclined surfaces S3 and S4 at the front and rear ends of one of its vertical members 617a that incline in the first direction. The inclination in the first direction is in the direction away from the pendant rope 22 that is clamped by the clamp member 617. The inclined surfaces S3 and S4 may be formed by bending a plate member. Similarly, the clamp member 617 has inclined surfaces S5 and S6 at the front and rear ends of the other vertical member 617a that incline in the second direction. The inclination in the second direction is in the direction away from the pendant rope 22 that is clamped by the clamp member 617. The inclined surfaces S5 and S6 may be formed by bending a plate member. Due to the inclined surfaces S3 to S6, even if the pendant rope 22 shifts in the front and rear direction due to inertial force during transport, the metal fitting portion 25 is less likely to catch on the vertical member 617a of the clamp member 617, and wear of the metal fitting portion 25 can be suppressed.

[0039] <Second fixing device> The second fixing device 62 (see Figures 7 and 8) is attached to the frame member 412 in front of and above the boom 4b. The second fixing device 62 has a receiving surface 621 for receiving the pendant rope 22 and a front inclined surface 622 (corresponding to the first inclined surface) that slopes downward from the front end of the receiving surface 621. The second fixing device 62 may further have a secondary front inclined surface 623 that slopes downward at an even steeper angle from the front inclined surface 622. The receiving surface 621 is located between the frame member 412 of the boom 4b and the front end of the transverse walk 5b. The receiving surface 621 is the surface on which the joint portion 26a of the metal fitting portion 26 rests in the transport state. The receiving surface 621 is a substantially horizontal surface when the boom 4b is lying horizontally. The receiving surface 621 is located above the frame member 412 and at the same height as the scaffolding of the transverse walk 5b. If the receiving surface 621 is positioned at the same height as the receiving surface 611 of the first fixing device 61 described above, the metal fitting 26 resting on the transverse walk 5b cannot be placed on the receiving surface 621 in a horizontal position, making it difficult to fix the metal fitting 26.

[0040] The second fixing device 62, like the first fixing device 61, includes a connecting portion 615 (specifically a base member 615a and a connector 615b) that connects the receiving surface 621 to the boom 4b, a clamp member 617 that clamps and fixes the metal fitting portion 26 on the opposite side of the pendant rope 22, and a support body 616 to which the clamp member 617 is connected.

[0041] As explained earlier, the second fixing device 62 has the same configuration as the first fixing device 61. On the other hand, in the second fixing device 62, the receiving surface 621, the front inclined surface 622, and the secondary front inclined surface 623 are different parts from the receiving surface 611, the rear inclined surface 612, and the front inclined surface 613 of the first fixing device 61 (see Figures 4 and 5). That is, the receiving surface 621 of the second fixing device 62 corresponds to the part of the front inclined surface 613 of the first fixing device 61. The front inclined surface 622 of the second fixing device 62 corresponds to the receiving surface 611 of the first fixing device 61. The secondary front inclined surface 623 of the second fixing device 62 corresponds to the rear inclined surface 612 of the first fixing device 61. In the second fixing device 62, the connecting part 615 is connected to the frame material 412 at different degrees of inclination so that the position of the receiving surface 621 described above is achieved (see Figure 7(B)).

[0042] In the second fixing device 62, the front inclined surface 622 makes it less likely for the stepped portions D1 and D2 of the metal fitting 26 to catch on the end of the receiving surface 621, even if the pendant rope 22 shifts in the front-rear direction when switching the pendant rope 22 between the working state and the transport state, and when raising the boom 4b after switching to the working state, thus preventing damage to the metal fitting 26. In the second fixing device 62, there is a crosswalk 5b nearby behind the receiving surface 621, and the height of the scaffolding of the crosswalk 5b and the height of the receiving surface 621 are almost the same. Therefore, even if the metal fitting 26 shifts toward the crosswalk 5b, or if the shifted metal fitting 26 moves toward its original position, the stepped portions D1 and D2 of the metal fitting 26 are less likely to catch on the rear end of the receiving surface 621, thus preventing damage to the pendant rope fixing device 60, the skywalk 5, or the metal fitting 26 due to such catching.

[0043] <Third fixing device> The third fixing device 63 (Figure 1(B)) is attached to the diagonal member 413 of the boom 4b at the middle of the boom 4b in the front-rear direction. The third fixing device 63 is configured similarly to the first fixing device 61, except for the mounting location. That is, it is mounted at an angle so that the receiving surface 611 is approximately horizontal, and the rope portion 22a of the pendant rope 22 is fixed so that it rests on the receiving surface 611. Since the diagonal member 413 is provided at an angle to the frame members 411 and 412, the clamp member 617 of the third fixing device 63 will clamp the rope portion 22a with the rope portion 22a passing through it at an angle. However, since there is ample clearance in the inner dimensions of the clamp member 617 relative to the thickness of the pendant rope 22, the rope portion 22a can be fixed without difficulty. Note that "approximately horizontal" means horizontal in practical terms and does not have to be strictly horizontal. For example, an inclination of about 5 degrees is acceptable.

[0044] Embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. For example, in the above embodiments, a crawler crane was described as an example of crane 1, but the crane according to the present invention is applicable to any crane equipped with a boom and pendant rope, such as tower cranes, overhead cranes, jib cranes, retractable cranes, stacker cranes, gantry cranes, unloaders, etc., in addition to other mobile cranes such as wheel cranes, truck cranes, rough terrain cranes, and all-terrain cranes. Furthermore, details shown in the embodiments can be modified as appropriate without departing from the spirit of the invention. [Explanation of Symbols]

[0045] 1 Crane 2 Lower running body 3. Upper rotating body 4 Boom 4b Intermediate boom 411, 412 Frame material 413 Diagonal 5 Skywalk 5a Main Walk 5b Crosswalk 6 Live Must 20-22 Pendant Rope 22a Rope section 25, 26 Metal parts 25a, 26a joint D1, D2 stepped section 50 brackets 51 Inclined surface (second inclined surface) 60 Pendant Rope Fixing Device 61 1st fixing device 611 Receiving surface 612 Back slope (first slope) 613 Front slope 615 Connection section 615a Base member 615b Connector 616 Support 616a Stopper 617 Clamp member 617a Vertical member 617b Horizontal member S1~S6 Slope 617c Detachable part 62 Second fixing device 621 Receiving surface 622 Front slope (first slope) 623 Secondary front slope 63 Third fixing device

Claims

1. A pendant rope fixing device for securing a pendant rope during transport, The pendant rope is equipped with a first fixing device for fixing the first part of the pendant rope, The first fixing device is The receiving surface for receiving the aforementioned pendant rope, A first inclined surface that slopes downward from at least one of the front and rear ends of the receiving surface, A pendant rope fixing device having

2. A bracket attached to at least one of the front and rear ends of a skywalk provided on a boom, A bracket having a second inclined surface that slopes downward from the scaffolding of the aforementioned skywalk.

3. The Skywalk further comprises a bracket that is attached to at least one of the front or rear ends, The bracket has a second inclined surface that slopes downward from the scaffolding of the skywalk. The pendant rope fixing device according to claim 1.

4. The first fixing device is The receiving surface has a connecting portion that connects to the boom, When the boom is positioned horizontally, the receiving surface and the upper end of the connecting portion are at the same height. The pendant rope fixing device according to claim 1.

5. The aforementioned connecting portion is A base member connected to the aforementioned receiving surface, A connector that can be connected to the base member with the boom's constituent members in between, Includes, The base member is positioned diagonally with respect to the receiving surface. The pendant rope fixing device according to claim 4.

6. The first fixing device is It has a clamping member that clamps and secures the metal part of the pendant rope, The clamp member is provided so as to be able to be inverted vertically. Furthermore, when the clamp member is connected downwards, it has a limiting portion that restricts the range of motion of the clamp member, The pendant rope fixing device according to claim 1.

7. The pendant rope is equipped with a second fixing device for fixing the second part of the pendant rope, The first fixing device and the second fixing device are common parts. The pendant rope fixing device according to claim 1.

8. A crane having a main body and a boom that is pivotably attached to the main body, A crane to which the pendant rope fixing device described in claim 1 is fixed to the boom.

9. A crane having a main body and a boom that is pivotably attached to the main body, A skywalk is provided on one side of the aforementioned boom. A crane having the bracket described in claim 2 at at least one of the front and rear ends of the skywalk.

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