Crawler chassis and crawler tower crane

Abstract

The present disclosure provides a track chassis with improved overturning resistance and a track tower crane. A support leg is connected to the top of the track chassis, the track chassis comprises tracks on both sides of the support leg, a sheet type support frame is fixed to the outer peripheral surface of the support leg, a hydraulic oil cylinder comprising a piston rod is arranged on the sheet type support frame, the piston rod extends from below the sheet type support frame, and an oil cylinder frame for the top end of the piston rod to abut against is arranged on the side of the track chassis.

Description

Technical Field

[0001] This disclosure relates to a tracked chassis and a tracked tower crane. Background Technology

[0002] The domestic construction machinery industry has developed rapidly in recent years, with increasingly higher levels of technology. In situations where construction sites are large and require frequent relocation of ultra-large construction machinery, crawler-mounted tower cranes have emerged. These crawler-mounted tower cranes are also simply referred to as crawler tower cranes.

[0003] Tracked tower cranes have four outriggers, each connected to one of four tracked chassis. Tracked tower cranes are characterized by high working height, large lifting capacity, and long working radius, resulting in large structural components. Furthermore, the distance between the four tracked chassis can be more than 10 meters, making the crane prone to tilting when traveling on sloping ground, posing a very high risk of overturning. Therefore, it is necessary to design a tracked chassis that can improve the overall overturning resistance of the tower crane to mitigate this risk. Summary of the Invention

[0004] This disclosure is made in view of the above circumstances, and its object is to provide a tracked chassis and a tracked tower crane that can improve anti-overturning capability. Specifically, this disclosure relates to a tracked chassis with outriggers connected to the top of the tracked chassis. The tracked chassis includes tracks located on both sides of the outriggers. A plate-type support frame is fixed to the outer peripheral surface of the outriggers. A hydraulic cylinder including a piston rod is provided in the plate-type support frame. The piston rod extends from below the plate-type support frame. A cylinder frame is provided on the side of the tracked chassis for the top end of the piston rod to abut against.

[0005] According to one or more embodiments of this disclosure, the plate support frame is connected to the legs via a plurality of connecting portions.

[0006] According to one or more embodiments of this disclosure, the plate support frame is connected to the support leg via a pin.

[0007] According to one or more embodiments of this disclosure, a plurality of the plate-type support frames are arranged at 90-degree intervals along the outer peripheral surface of the legs.

[0008] According to one or more embodiments of this disclosure, a mounting portion is provided in the area between a plurality of plate-type support frames on the outer peripheral surface of the outrigger, and the plurality of plate-type support frames are respectively connected to the mounting portion via a web member.

[0009] According to one or more embodiments of this disclosure, a plurality of mounting portions are respectively arranged on the outer peripheral surface of the outrigger at the same height position as the plurality of connecting portions.

[0010] According to one or more embodiments of this disclosure, the cylinder frame is formed with a receiving portion that matches the shape of the top end of the piston rod.

[0011] This disclosure also relates to a tracked tower crane, including multiple sets of tracked chassis, multiple legs respectively connected to the multiple sets of tracked chassis, and a tower crane base supported above the multiple legs. Plate-type support frames are fixed on the outer peripheral surfaces of the multiple legs, and hydraulic cylinders including piston rods are provided on the plate-type support frames. The piston rods extend from the bottom of the plate-type support frames, and cylinder frames are provided on the sides of each set of tracked chassis for the top end of the piston rod to abut against.

[0012] According to one or more embodiments of this disclosure, the plate support frame is connected to the legs via a plurality of connecting portions.

[0013] According to one or more embodiments of this disclosure, the plate support frame is connected to the support leg via a pin.

[0014] According to one or more embodiments of this disclosure, a plurality of the plate-type support frames are arranged at 90-degree intervals along the outer peripheral surface of the legs.

[0015] According to one or more embodiments of this disclosure, the tracked tower crane includes at least four sets of tracked chassis, the center points of which are respectively located at the four corners of a square area, and a plurality of plate support frames are respectively located on the extension lines of the four sides of the square area and are located outside the square area relative to the center points.

[0016] According to one or more embodiments of this disclosure, a mounting portion is provided in the area between a plurality of plate-type support frames on the outer peripheral surface of the outrigger, and the plurality of plate-type support frames are respectively connected to the mounting portion via a web member.

[0017] According to one or more embodiments of this disclosure, a plurality of mounting portions are respectively arranged on the outer peripheral surface of the outrigger at the same height position as the plurality of connecting portions.

[0018] According to one or more embodiments of this disclosure, the cylinder frame is formed with a receiving portion that matches the shape of the top end of the piston rod.

[0019] This disclosure provides a tracked chassis and a tracked tower crane with improved anti-overturning capability. Attached Figure Description

[0020] Figure 1 This is a front view showing a tracked chassis according to one embodiment of the present disclosure.

[0021] Figure 2This is a schematic diagram illustrating a plate support frame in a tracked chassis according to an embodiment of the present disclosure.

[0022] Figure 3 This is a left view showing a tracked chassis according to one embodiment of the present disclosure.

[0023] Figure 4 This is a top view schematic diagram showing the outriggers in a tracked chassis according to an embodiment of the present disclosure.

[0024] Figure 5 This is a front view schematic diagram showing a tracked tower crane according to one embodiment of the present disclosure.

[0025] Figure 6 This is a top view schematic diagram illustrating a tracked tower crane according to one embodiment of the present disclosure. Detailed Implementation

[0026] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0027] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0028] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0029] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the related listed items. The terms “between X and Y” and “between approximately X and Y” used in this specification should be interpreted as including both X and Y. The term “between approximately X and Y” used in this specification means “between approximately X and approximately Y,” and the term “from approximately X to Y” used in this specification means “from approximately X to approximately Y.”

[0030] In the specification, when an element is described as being "on," "attached," "connected," "coupled," or "in contact" with another element, the element can be directly located on, attached to, connected to, coupled to, or in contact with the other element, or there may be intermediate elements present. Conversely, when an element is described as being "directly" located on, directly attached to, directly connected to, directly coupled to, or directly in contact with another element, no intermediate elements are present. In the specification, the description of a feature being arranged "adjacent" to another feature can mean that a feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0031] In the specification, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also the different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be explained accordingly.

[0032] <Implementation Method 1>

[0033] The following is with reference to the appendix. Figures 1-4 The structure of the tracked chassis of this exemplary embodiment 1 will be described. Figure 1 This is a front view showing a tracked chassis according to one embodiment of the present disclosure. Figure 2 This is a schematic diagram illustrating a plate support frame in a tracked chassis according to an embodiment of the present disclosure. Figure 3 This is a left view showing a tracked chassis according to one embodiment of the present disclosure. Figure 4 This is a top view schematic diagram showing the outriggers in a tracked chassis according to an embodiment of the present disclosure.

[0034] See Figure 1 The tracked chassis 2 has outriggers 1 connected to its upper part, and two tracks 5 are wound on the tracked chassis 2, located on either side of the outriggers 1. This configuration allows the tracked chassis 2 to support various main units via the outriggers 1, and enables the two tracks 5 to operate synchronously or differentially. When driven synchronously, the tracked chassis 2 can move forward or backward, thus achieving a walking function. When driven differentially, the tracked chassis 2 can turn, thus achieving a steering function.

[0035] exist Figure 1 In the middle, on the outer periphery of outrigger 1 ( Figure 1 A plate-type support frame 3 is fixed to the left side of the image, and a hydraulic cylinder 6 is mounted on the plate-type support frame 3. In one embodiment according to this disclosure, the hydraulic cylinder 6 may be a telescopic hydraulic cylinder. See also Figure 2 The hydraulic cylinder 6 includes a piston rod 7 that extends from below the plate support frame 3. By controlling the hydraulic pressure of the hydraulic cylinder 6, the length of the piston rod 7 extending from below the plate support frame 3 can be adjusted, and a specified hydraulic pressure can be set to maintain this length.

[0036] In addition, Figure 1 In the middle, on the side of tracked chassis 2 (in Figure 1 A cylinder frame 4 is provided on the left side (in the middle). This cylinder frame 4 is located below the plate support frame 3, specifically below the piston rod 7 extending from below the plate support frame 3. Under normal conditions, there is a gap between the cylinder frame 4 formed on the side of the tracked chassis 2 and the piston rod 7 extending from below the plate support frame 3. During actual operation, the hydraulic pressure of the hydraulic cylinder 6 is controlled to adjust the length of the piston rod 7 extending from below the plate support frame 3, thereby adjusting the gap between the cylinder frame 4 and the top of the piston rod 7 to an appropriate distance. When the tracked chassis 2 is working normally, the piston rod 7 extending from below the plate support frame 3 does not contact the cylinder frame 4 provided on the tracked chassis 2, thus not affecting the normal walking and steering functions of the tracked chassis 2. When the outrigger 1 tilts (e.g., tilts to the left in the figure), the cylinder frame 4 provides support for the top of the piston rod 7, thereby preventing further tilting of the outrigger 1. The shape and material of the cylinder bracket 4 are not particularly limited; it can simply serve as a support when the cylinder bracket 4 contacts the plate support frame 3. In one embodiment according to this disclosure, a receiving portion 4a is formed in the cylinder bracket 4, which has a shape that matches the shape of the top end of the piston rod 7. Figure 1 and 2 As shown, the top of the piston rod 7 extending from below the plate support frame 3 is formed as a hemispherical protrusion, and correspondingly, the receiving portion 4a formed on the cylinder frame 4 can be formed as a hemispherical concave portion. This allows for smoother contact between the cylinder frame 4 and the piston rod 7 of the hydraulic cylinder 6, and provides more stable support force.

[0037] Furthermore, since the outrigger 1 is typically quite high, and considering the considerable distance between it and the tracked chassis 2, in one embodiment according to this disclosure, the plate support frame 3 can be connected to the outrigger 1 via multiple connecting portions 3a. For example, Figure 1As shown, the number of connecting parts 3a of the plate support frame 3 is two, but it is not limited to this; it can also be more than two, such as three or four. In this way, when the cylinder frame 4 contacts the plate support frame 3 to provide support force to the outrigger 1, it can provide support force to the outrigger 1 at multiple points, thereby supporting the outrigger 1 more stably.

[0038] Furthermore, the fixing method of the plate support frame 3 is not particularly limited, but it is preferably fixed to the support leg 1 in a detachable manner. In one embodiment according to this disclosure, the plate support frame 3 can be connected to the support leg 1 by a pin. In this case, a pin hole is formed in the connecting portion 3a, and a connecting portion with a corresponding pin hole is also pre-formed on the outer periphery of the support leg 1. By aligning the pin holes of the two, the pin passes through the pin holes of both, thereby achieving a connection and fastening.

[0039] Furthermore, the shape of the plate support frame 3 is not particularly limited. In one embodiment according to this disclosure, such as... Figure 2 As shown, the plate support frame 3 can be an F-type support frame. In this case, the number of connecting parts 3a of the plate support frame 3 is two. When the plate support frame 3 is an F-type support frame, interference between the bottom of the plate support frame 3 and the track 5 wound around the track chassis 2 can be avoided, and at the same time, it can provide support force to the outrigger 1 at multiple points, thus supporting the outrigger 1 more stably. In addition, in order to increase the stability of the plate support frame 3, such as Figure 1 and Figure 2 As shown, inclined support bars 3b can be configured between the main frames of the plate support frame 3.

[0040] As described above, by providing the aforementioned plate support frame 3 and cylinder frame 4 on one side of the outrigger 1 and the track chassis 2 respectively, the outrigger 1 can be tilted to one side (e.g., in...). Figure 1 When tilting to the left, the top of the piston rod 7 rests against the cylinder bracket 4, thereby providing support to the outrigger 1 and preventing it from tilting further. This improves the anti-rollover capability of the tracked chassis 2 in one direction. Further consideration is given to improving the anti-rollover capability of the tracked chassis 2 in other directions (e.g., ...). Figure 1 To enhance the anti-overturning capability (in directions such as the right side, inner side of the paper, and outer side of the paper), the aforementioned combination of plate support frame 3 and cylinder frame 4 can be respectively provided on the corresponding outer peripheral surface of the outrigger 1 and the corresponding side surface of the track chassis 2. In one embodiment according to this disclosure, multiple plate support frames 3 can be provided at 90-degree intervals along the outer peripheral surface of the outrigger 1. In this case, in correspondence with the multiple plate support frames 3, multiple cylinder frames 4 are respectively provided on the corresponding side surface of the track chassis 2 for the piston rod 7 extending from below the plate support frame 3 to abut against.

[0041] Figure 3This is a left view showing a tracked chassis 1 according to one embodiment of the present disclosure. It should be noted that... Figure 3 The middle part is omitted Figure 1 The left-hand plate support frame 3 and the cylinder frame 4 below it. Figure 3 The plate-type support frame 3 on the left side is equivalent to being set in Figure 1 The inner side of the paper's sheet support 3, and Figure 1 The plate-type support frame 3 is spaced 90 degrees along the outer periphery of the support leg 1.

[0042] Figure 4 This is a top view of the support leg 1 when two plate-type support frames 3 are installed. Figure 4 As shown, two plate-type support frames 3 are spaced 90 degrees apart along the outer periphery of the outrigger 1. In this way, the plate-type support frame 3 on the left side of the figure can improve the anti-overturning capability of the tracked chassis 2 when tilting to the left, and the plate-type support frame 3 on the upper side of the figure can improve the anti-overturning capability of the tracked chassis 2 when tilting backward. The number of plate-type support frames 3 is not limited to two, and their positions are not limited to the left side and the upper side of the figure above. Depending on actual needs, the plate-type support frames 3 can be installed in different directions along the outer periphery of the outrigger 1, thereby improving the anti-overturning capability of the tracked chassis 2 when tilting in different directions.

[0043] like Figure 4 As shown, a mounting portion 9 is provided on the outer peripheral surface of the outrigger 1 in the area between two plate support frames 3. The two plate support frames 3 are connected to the mounting portion 9 by horizontally arranged web members 8. By providing additional mounting portions 9 on the outer peripheral surface of the outrigger 1 and connecting the two plate support frames 3 to the mounting portions 9 via the web members 8, the plate support frames 3 are further stabilized. This is because, as mentioned above, the plate support frame 3 can be connected to the outrigger 1 via a pin at the connecting portion 3a, but there is a small gap between the pin hole and the pin at the connecting portion 3a, which may cause the plate support frame 3 to wobble relative to the outrigger 1 when the tracked chassis 2 is moving or during actual operation. Therefore, it is considered to further stabilize the plate support frame 3 by connecting the two plate support frames 3 to the mounting portions 9 via the web members 8. Furthermore, to further stabilize the plate support frame 3, in one embodiment according to this disclosure, multiple mounting portions 9 can be arranged on the outer peripheral surface of the outrigger 1 at the same height as the multiple connecting portions 3a. Figure 1 and 2 As shown, for example, when the plate support frame 3 is an F-type support frame, there are two connecting parts 3a, which are arranged vertically and horizontally at a certain distance. In this case, two mounting parts 9 can be provided on the outer peripheral surface of the support leg 1 at the same height as the two connecting parts 3a. Thus, in Figure 4In the top view, two mounting parts 9 are provided, which overlap in the top view direction. Each of the two plate support frames 3 is connected to the two mounting parts 9 by two web rods 8. As a result, each plate support frame 3 can be further stabilized, and the contact between the cylinder frame 4 and the piston rod 7 of the hydraulic cylinder 6 formed on the plate support frame 3 can be made more smoothly when tilting occurs, so as to provide more stable support force.

[0044] The structure of the tracked chassis of this exemplary embodiment 1 has been described in detail above. The tracked chassis 2 constructed in this way can support various main machines through the outriggers 1. As an example, it can be applied to tower cranes.

[0045] <Implementation Method 2>

[0046] The following is for reference Figures 5-6 The case of applying the tracked chassis 2 in Embodiment 1 to a tracked tower crane will be described. Figure 5 This is a front view schematic diagram showing a tracked tower crane 10 according to one embodiment of the present disclosure. Figure 6 This is a top view schematic diagram showing a tracked tower crane 10 according to one embodiment of the present disclosure.

[0047] like Figure 5 , 6 As shown, the tracked tower crane 10 includes multiple sets of tracked chassis 2 as described in Embodiment 1 and multiple outriggers 1 respectively connected to the multiple sets of tracked chassis 2. As mentioned above, by driving each set of tracked chassis 2 to run synchronously or differentially, the tracked tower crane 10 can realize its walking and steering functions.

[0048] The tracked tower crane 10 also includes a tower crane base 11 supported by a plurality of outriggers 1, on which a tower body 12 and a tower crane jib 13 connected to the top of the tower body 12 are mounted. Typically, crossbeams 14 connecting the plurality of outriggers 1 can be provided between them. In addition, the tower body 12 can typically be configured to extend in a vertical direction.

[0049] In one embodiment according to this disclosure, the number of sets of tracked chassis 2 in the tracked tower crane 10 can be set as needed, typically four, six, or eight sets. Figure 6 In the preferred embodiment shown, the tracked tower crane 10 has four sets of tracked chassis 2, with the center points of the four sets of tracked chassis 2 located at the four corners of the square area. In this case, during the lifting process, the tower crane boom 13 can obtain relatively constant support when rotating to any position, which helps to ensure the operational stability and safety of the tower crane.

[0050] like Figure 6As shown, each of the four corners of the square area has multiple plate-type support frames 3, two of which are shown in the figure. These two plate-type support frames 3 are located on the extension lines of the four sides of the square area, and are located outside the square area relative to the center point of the tracked chassis 2. At this time, in Figure 6 In the middle, as a whole, eight plate-type support frames 3 are arranged along the outer perimeter of the square area. At each leg 1, two plate-type support frames 3 are set at a 90-degree interval along the outer perimeter of each leg 1.

[0051] The following needs to be explained. Figure 4 The top view of support leg 1 shown is equivalent to Figure 6 A top-down view of leg 1 located in the upper left corner of the square area.

[0052] Through such Figure 6 The tracked tower crane 10, configured as shown, comprehensively enhances its anti-overturning capability. In other words, when the tracked tower crane 10 travels on sloping ground or tilts during lifting, regardless of the direction in which it tilts, the tracked tower crane 10 with the above-described structure can prevent it from tipping over, thereby achieving a comprehensive improvement in its anti-overturning capability.

[0053] The following is a brief explanation of the working principle behind the improved anti-overturning capability of the crawler tower crane 10. When the tower crane is operating normally, the piston rods of the hydraulic cylinders extending from below the plate support frames in each set of crawler chassis do not contact the hydraulic cylinder frames formed on the crawler chassis, thus not affecting the normal walking and steering functions of the crawler tower crane 10. When the tower crane tilts to one side, for example, to the left, such as... Figure 6 As shown, in the two sets of tracked chassis 2 located on the left, the left-side plate support frame and cylinder frame of each set function to provide support for the two outriggers 1 located on the left, preventing them from tilting further and thus preventing the tower crane from tipping over. Similarly, when the tower crane tilts in other directions, the corresponding tracked chassis 2 can provide support for the outriggers 1 located in those other directions. This achieves the goal of enhancing the overall anti-tipping capability of the tower crane.

[0054] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A tracked chassis, wherein legs are connected above the tracked chassis, the tracked chassis including tracks located on both sides of the legs, characterized in that, A plate-type support frame is fixed to the outer circumferential surface of the outrigger. A hydraulic cylinder including a piston rod is provided on the plate-type support frame, and the piston rod extends from below the plate-type support frame. A cylinder bracket is provided on the side of the tracked chassis for the top end of the piston rod to abut against. The cylinder bracket is located below the piston rod, which extends from below the plate support frame. The cylinder frame has a receiving portion that matches the shape of the top end of the piston rod. The plate-type support frame is connected to the support legs by multiple connecting parts. Multiple plate-type support frames are arranged at 90-degree intervals along the outer periphery of the support leg. Under normal conditions, there is a gap between the cylinder frame formed on the side of the tracked chassis and the piston rod extending from below the plate support frame. When the outrigger tilts, the cylinder bracket serves as a support for the top of the piston rod, thereby providing support to the outrigger and preventing it from tilting further.

2. The tracked chassis according to claim 1, characterized in that, The plate-type support frame is connected to the support leg via a pin.

3. The tracked chassis according to claim 1, characterized in that, A mounting portion is provided in the area between the plurality of plate-type support frames on the outer peripheral surface of the outrigger. The multiple plate-type support frames are respectively connected to the mounting part via web members.

4. The tracked chassis according to claim 3, characterized in that, On the outer peripheral surface of the outrigger, a plurality of mounting portions are respectively arranged at the same height position as the plurality of connecting portions.

5. A tracked tower crane, comprising multiple sets of tracked chassis, multiple legs respectively connected to the multiple sets of tracked chassis, and a tower crane base supported above the multiple legs, characterized in that, Each of the multiple outriggers has a plate-type support frame fixed to its outer peripheral surface. Each plate-type support frame is equipped with a hydraulic cylinder including a piston rod, the piston rod extending from below the plate-type support frame. Each set of tracked chassis has a cylinder bracket on its side for the top end of the piston rod to abut against. The cylinder bracket is located below the piston rod, which extends from below the plate support frame. The cylinder frame has a receiving portion that matches the shape of the top end of the piston rod. The plate-type support frame is connected to the support legs by multiple connecting parts. Multiple plate-type support frames are arranged at 90-degree intervals along the outer periphery of the support leg. Under normal conditions, there is a gap between the cylinder frame formed on the side of the tracked chassis and the piston rod extending from below the plate support frame. When the outrigger tilts, the cylinder bracket serves as a support for the top of the piston rod, thereby providing support to the outrigger and preventing it from tilting further.

6. The tracked tower crane according to claim 5, characterized in that, The plate-type support frame is connected to the support leg via a pin.

7. The tracked tower crane according to claim 5, characterized in that, The tracked tower crane includes at least four sets of tracked chassis, the center points of which are respectively located at the four corners of a square area. The plurality of the plate-type support frames are respectively located on the extension lines of the four sides of the square area, and are located outside the square area relative to the center point.

8. The tracked tower crane according to claim 5, characterized in that, A mounting portion is provided in the area between the plurality of plate-type support frames on the outer peripheral surface of the outrigger. The multiple plate-type support frames are respectively connected to the mounting part via web members.

9. The tracked tower crane according to claim 8, characterized in that, On the outer peripheral surface of the outrigger, a plurality of mounting portions are respectively arranged at the same height position as the plurality of connecting portions.

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