Crawler crane

Abstract

The utility model relates to the technical field of hoisting equipment, and discloses a crawler crane. The crawler crane comprises a rotary table tail section and a counterweight lifting device; the counterweight lifting device is used for operating a counterweight of the lifting crawler crane and comprises a vertical bracket which is detachably mounted on the tail section of the rotary table and is provided with a guide rail which vertically extends; the transmission assembly is connected with the counterweight through a transmission block of the transmission assembly and is in sliding fit with the guide rail through a guide piece of the transmission assembly; and the lifting driving unit is mounted on the vertical bracket and is used for driving the transmission block to reciprocate along the vertical direction. Wherein the counterweight lifting device is detachably arranged on the rotary table tail section. The balance weight can be conveniently disassembled and assembled. The height of the counter weights of different specifications can be adjusted through the counter weight lifting device, an auxiliary crane does not need to be used, operation is convenient, cost is low, and universality is good. The counterweight lifting device is detachably arranged, so that the design of the existing crawler crane can be conveniently added or modified, and the crawler crane is convenient and practical.

Description

Technical Field

[0001] This application belongs to the field of lifting equipment technology, specifically, it relates to a crawler crane. Background Technology

[0002] The counterweight of a crane is usually a heavy object placed on the crane's turntable. The counterweight is typically used to balance the overall center of gravity of the crane during operation.

[0003] For most cranes, multiple counterweights are usually transported to the site first, and then installed at the tail of the turntable.

[0004] However, the installation of counterweights generally requires the use of an auxiliary crane to lift the counterweights onto a crane, resulting in higher installation costs. Utility Model Content

[0005] The purpose of this application is to provide a crawler crane that facilitates the assembly and disassembly of counterweights.

[0006] To achieve the above objectives, this application provides a crawler crane, which includes:

[0007] Turntable tail section;

[0008] A counterweight lifting device, used to operate the counterweight of a crawler crane, includes:

[0009] The vertical support is detachably installed on the tail section of the turntable and is equipped with a vertical guide rail;

[0010] The transmission component is connected to the counterweight through the transmission block of the transmission component, and slides with the vertical guide rail through the guide component of the transmission component;

[0011] The lifting drive unit is mounted on a vertical support and is used to drive the transmission block to reciprocate in the vertical direction;

[0012] The counterweight lifting device is detachably mounted on the tail section of the turntable.

[0013] In some embodiments, the transmission block includes a transmission connection end connected to the lifting drive unit and a forked connection end extending obliquely downward from both sides of the transmission connection end, the forked connection end being detachably connected to the counterweight.

[0014] In some embodiments, the transmission assembly also includes a traction rope, one end of which is connected to a forked connection end and the other end of which is connected to a counterweight.

[0015] In some embodiments, the transmission assembly further includes a stop plate disposed at the bottom of the transmission block, and a stop platform for limiting and stopping the stop plate is fixedly disposed on the vertical support.

[0016] In some implementations, the guide element is a guide wheel assembly.

[0017] In some implementations, there are multiple counterweight lifting devices, which are arranged symmetrically about the tail section of the turntable.

[0018] In some implementations, the boost drive unit includes:

[0019] The hoisting mechanism is fixed to the vertical support.

[0020] The lifting rope has one end fixed to the transmission assembly and the other end connected to the winch mechanism.

[0021] The hoisting mechanism drives the transmission components by winding and unwinding the lifting rope.

[0022] In some implementations, the boost drive unit further includes:

[0023] The pulley system is installed at the top of the vertical support.

[0024] The hoisting mechanism and the transmission assembly are located on both sides of the vertical support. The lifting rope extending from the hoisting mechanism passes through the pulley block and is connected to the transmission assembly.

[0025] In some implementations, the winch mechanism is located at the bottom of the vertical support.

[0026] In some implementations, the lifting drive unit is an electric hoist.

[0027] Through the above technical solutions, the crawler crane provided in this application embodiment has the following beneficial effects:

[0028] In the technical solution of this application, the height of the counterweights can be adjusted via a counterweight lifting device to meet the installation height requirements of different counterweights. Compared to the prior art method of using an auxiliary crane to lift the counterweights onto the crane, the crawler crane of this application is equipped with a dedicated configuration lifting device, eliminating the need for an auxiliary crane. The detachable configuration lifting device facilitates the addition or modification of existing crawler cranes, making it convenient and practical.

[0029] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0031] Figure 1 This is a front view of the counterweight lifting device of a crawler crane according to a specific embodiment of this application;

[0032] Figure 2 for Figure 1 Side view of the counterweight lifting device in the middle;

[0033] Figure 3 for Figure 1 A side view of the transmission assembly of the counterweight lifting device in the middle;

[0034] Figure 4 for Figure 3 The main view of the transmission components in the middle;

[0035] Figure 5 This is a front view of the tail section of the turntable of a crawler crane according to a specific embodiment of this application;

[0036] Figure 6 for Figure 5 Side view of the rear section of the transfer station;

[0037] Figure 7 for Figure 5 A schematic diagram of the counterweight structure.

[0038] Explanation of reference numerals in the attached figures

[0039] W counterweight 100 counterweight lifting device

[0040] 110 Vertical support 111 Vertical guide rail

[0041] 112 Stopping table 120 Transmission assembly

[0042] 121 Transmission block 121a Forked connection end

[0043] 121b Transmission connection end; 122 Guide wheel assembly

[0044] 123 Traction rope 124 Stop plate

[0045] 130 Lifting drive unit 131 Hoisting mechanism

[0046] 132 Lifting rope 133 Pulley block

[0047] 200 Turntable Tail Section B Turntable Rear Section Axis Detailed Implementation

[0048] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0049] The crawler crane according to this application is described below with reference to the accompanying drawings.

[0050] It should be noted that, in this application, unless otherwise stated, terms such as "upper," "lower," "front," "rear," "inner," and "outer" generally refer to the orientation shown in the accompanying drawings. When no accompanying drawings are provided, "inner" and "outer" refer to the lateral inward and outward relative to axis B of the rear section of the turntable.

[0051] This application discloses a novel crawler crane, such as Figures 1 to 7 As shown, a crawler crane in one specific embodiment includes:

[0052] The tail section 200 of the turntable has counterweights W installed on both sides.

[0053] The counterweight lifting device 100, used to operate and lift the counterweight W of the crawler crane, includes:

[0054] The vertical support 110 is detachably installed on the tail section 200 of the turntable and is equipped with a vertical guide rail 111;

[0055] The transmission assembly 120 is connected to the counterweight W through the transmission block 121 of the transmission assembly 120, and slides with the vertical guide rail through the guide member of the transmission assembly 120.

[0056] The lifting drive unit 130 is mounted on the vertical bracket 110 and is used to drive the transmission block 121 to reciprocate in the vertical direction;

[0057] The counterweight lifting device 100 is detachably mounted on the tail section 200 of the turntable.

[0058] See Figure 5 and Figure 6 The counterweight lifting device 100 can directly adjust the height of the counterweight W to adapt to the installation height required for different specifications of counterweight W. Compared with the prior art, which requires the use of an auxiliary crane to lift and install the counterweight W onto a crane, the crawler crane of this application is not only easy to operate and has lower cost, but also has good versatility. In addition, the detachable configuration of the counterweight lifting device 100 also facilitates the addition or modification of existing crawler cranes. Furthermore, the counterweight lifting device 100 can be installed between the two sides of the counterweight W without occupying additional installation space. For details, please refer to... Figure 1 and Figure 2After the counterweight lifting device 100 is detachably connected to the counterweight W via the transmission block 121 of the transmission assembly 120, the lifting drive unit 130 lifts the counterweight W using the vertical support 110 as the force point and through the transmission block 121, thereby adjusting the height of the counterweight W. The introduction of the transmission block 121 facilitates the connection of the counterweight lifting device 100 with counterweights of different specifications and ensures the stability of the connection between the counterweight lifting device 100 and the counterweight W, thus improving the versatility and reliability of the counterweight lifting device 100. The counterweight lifting device 100 can also stabilize the lifting movement of the counterweight W through the guide members of the transmission assembly 120, thereby preventing the counterweight W from swaying during the lifting process and ensuring the stability of the crawler crane. The bottom of the vertical support 110 is provided with a fixing hole for aligning with the mounting hole on the turntable tail section 200, and the vertical support 110 is fixed by bolts passing through the mounting hole and the fixing hole. Those skilled in the art will understand that the lifting drive unit 130 used to drive the transmission block 121 to reciprocate vertically can take many forms, including but not limited to gear and rack mechanisms, worm gear mechanisms, etc. The detachable installation of the vertical support 110 relative to the turntable tail section 200 is not limited to the aforementioned bolted connection, but can also be achieved through other forms such as snap-fit ​​fixing to the turntable tail section 200. To ensure the stability of the vertical reciprocating motion of the transmission block 121, the guide member can take various forms, such as a slider that engages with the vertical guide rail 111.

[0059] In this embodiment, such as Figure 3 and Figure 6 As shown, the transmission block 121 may include a transmission connection end 121b connected to the lifting drive unit 130 and bifurcated connection ends 121a extending obliquely downward from both sides of the transmission connection end 121b. The bifurcated connection ends 121a are detachably connected to the counterweight W. This significantly reduces the structural dimensions of the transmission block 121 while improving its connection strength and load-bearing capacity with the counterweight W. It not only boasts high strength but also a reasonable stress distribution, achieving a balance between lightweight design and high reliability. Clearly, the structural form of the transmission block 121 is not limited to... Figure 3 and Figure 6 The herringbone shape shown can also be in other forms such as a triangle.

[0060] In this embodiment, such as Figure 6 As shown, the transmission assembly 120 may further include a traction rope 123, one end of which is connected to the forked connection end 121a, and the other end is connected to the counterweight W. This helps ensure a stable connection between the transmission block 121 and the counterweight W, reduces the potential impact of vibration and shock, increases the adaptability of the transmission assembly 120 to counterweights of different specifications and sizes, and facilitates quick assembly and disassembly. Specifically, see... Figure 6There may be two traction ropes 123, arranged symmetrically with respect to the transmission block 121, to ensure the force balance between the counterweight W and the transmission block 121. Of course, the number of traction ropes 123 is not limited to the two shown in the figure. As can be understood by those skilled in the art, the number of traction ropes 123 may also be other depending on the specifications of the counterweight W and the structural requirements of the transmission block 121.

[0061] In this embodiment, such as Figure 2 As shown, the transmission assembly 120 may further include a stop plate 124 disposed at the bottom of the transmission block 121, and a stop platform 112 fixedly disposed on the vertical support 110 for limiting and stopping the stop plate 124. Specifically, when the transmission assembly 120 moves to the lower end of the vertical support 110, the stop plate 124 can abut against the stop platform 112. In this way, the counterweight W can be prevented from exceeding its stroke during descent, avoiding the possibility of the counterweight W hitting the ground and causing damage. Obviously, the position of the stop plate 124 is not limited to... Figure 2 As an example, the stop plate 124 can also be provided on the guide member on the transmission block 121 shown; the location of the stop table 112 should not be limited to... Figure 2 The vertical support 110 shown can also be used for other positions such as the tail section 200 of the turntable.

[0062] In this embodiment, such as Figure 2 As shown, the guide component is a guide wheel assembly 122. Thus, through the rolling engagement of the guide wheel assembly 122 and the vertical guide rail 111, the vertical reciprocating motion of the transmission block 121 can be stabilized, thereby improving the reliability of the counterweight lifting device.

[0063] In this embodiment, such as Figure 5 As shown, there are multiple counterweight lifting devices 100, which are symmetrically arranged about the tail section 200 of the turntable. This not only enhances the counterweight lifting capacity of the crawler crane but also reduces the load on each individual counterweight lifting device 100. The symmetrical arrangement of the counterweight lifting devices 100 about the tail section 200 of the turntable ensures a uniform load distribution among the multiple counterweight lifting devices 100 and a balanced force on the counterweight W. Clearly, the number of counterweight lifting devices 100 should not be limited to a certain number. Figure 5 The two shown can also be set to other quantities according to the specifications of the counterweight W.

[0064] The counterweight W can reciprocate vertically under the drive of the lifting drive unit 130 in various ways. In this embodiment, for example... Figure 1 and Figure 2 As shown, the boost drive unit 130 includes:

[0065] The hoisting mechanism 131 is fixed to the vertical support 110;

[0066] The lifting rope 132 has one end fixed to the transmission assembly 120 and the other end connected to the winch mechanism 131.

[0067] The hoisting mechanism 131 drives the transmission assembly 120 by winding and unwinding the lifting rope 132.

[0068] Thus, the lifting drive unit 130 is compact, reducing both the required space and overall weight. Furthermore, it facilitates accurate positioning of the counterweight W, allowing for precise adjustment of its installation height. The lifting rope 132 can be in various forms, such as wire rope, steel belt, or chain, to ensure the load capacity of the counterweight lifting device 100.

[0069] In this embodiment, such as Figure 2 As shown, the boost drive unit 130 also includes:

[0070] Pulley block 133 is installed on the top of vertical bracket 110;

[0071] The hoisting mechanism 131 and the transmission assembly 120 are located on both sides of the vertical support 110. The lifting rope 132 extending from the hoisting mechanism 131 passes around the pulley block 133 and is connected to the transmission assembly 120.

[0072] This facilitates the force balance of the vertical support 110, thereby improving its load-bearing capacity and reliability, and allows for the stable traction direction of the lifting rope 132 via the pulley block 133. The number of fixed pulleys in the pulley block 133 is not limited to... Figure 1 The two shown can also be other numbers; the location of pulley block 133 is not limited to... Figure 1 The pulley block 133 can also be fixedly mounted in other positions at the top of the vertical support 110 shown. Accordingly, those skilled in the art will understand that the form of the pulley block 133 is not limited to this. Figure 1 The guide pulley shown, i.e. pulley block 133, is only used for the steering of the lifting rope 132. It can also be in various forms such as differential pulley block 133 and compound pulley block 133, so as to change the driving force of the lifting rope 132 for lifting the counterweight W.

[0073] In this embodiment, such as Figure 1 As shown, the hoisting mechanism is located at the bottom of the vertical support. This greatly reduces the influence of the bending moment generated by the driving force of the hoisting mechanism 131 relative to the vertical support 110.

[0074] In this embodiment, the lifting drive unit 130 is an electric hoist. The electric hoist includes a motor and a reducer. The torque output by the motor is amplified by the reducer to drive the counterweight W to lift. It has a small overall size, light weight, simple installation and disassembly, and is convenient to use.

[0075] In the description of this application, it should be understood that 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A caterpillar crane, characterized in that The crawler crane includes: Turntable tail section (200); A counterweight lifting device (100), used for operating and lifting the counterweight (W) of the crawler crane, includes: A vertical support (110) is detachably installed on the tail section (200) of the turntable and is equipped with a vertical guide rail (111); The transmission assembly (120) is connected to the counterweight (W) via the transmission block (121) of the transmission assembly (120), and slides with the vertical guide rail (111) via the guide of the transmission assembly (120); A lifting drive unit (130) is mounted on the vertical support (110) and is used to drive the transmission block (121) to reciprocate in the vertical direction; The counterweight lifting device (100) is detachably mounted on the tail section (200) of the turntable.

2. A caterpillar crane according to claim 1, characterized in that The transmission block (121) includes a transmission connection end (121b) connected to the lifting drive unit (130) and a forked connection end (121a) extending obliquely downward from both sides of the transmission connection end (121b). The forked connection end (121a) is detachably connected to the counterweight (W).

3. A caterpillar crane according to claim 2, characterized in that The transmission assembly (120) also includes a traction rope (123), one end of which is connected to the forked connection end (121a) and the other end is connected to the counterweight (W).

4. A caterpillar crane according to claim 1, characterized in that The transmission assembly (120) also includes a stop plate (124) disposed at the bottom of the transmission block (121), and a stop platform (112) for limiting and stopping the stop plate (124) is fixedly disposed on the vertical support (110).

5. A caterpillar crane according to claim 1, characterized in that The guide component is a guide wheel assembly (122).

6. A caterpillar crane according to claim 1, characterized in that The number of the counterweight lifting devices (100) is multiple, and the multiple counterweight lifting devices (100) are symmetrically arranged about the tail section (200) of the turntable.

7. A caterpillar crane according to any one of claims 2-6, characterized in that The lifting drive unit (130) includes: The hoisting mechanism (131) is fixed to the vertical support (110); A lifting rope (132) is provided, one end of which is fixed to the transmission assembly (120), and the other end of which is connected to the hoisting mechanism (131). The hoisting mechanism (131) drives the transmission assembly (120) by winding and unwinding the lifting rope (132).

8. A caterpillar crane according to claim 7, characterized in that The lifting drive unit (130) further includes: A pulley block (133) is installed on top of the vertical support (110); The hoisting mechanism (131) and the transmission assembly (120) are located on both sides of the vertical support (110). The lifting rope (132) extending from the hoisting mechanism (131) passes around the pulley block (133) and is connected to the transmission assembly (120).

9. The crane of claim 8, wherein, The hoisting mechanism (131) is located at the bottom of the vertical support (110).

10. A caterpillar crane according to any one of claims 2-6, characterized in that The lifting drive unit (130) is an electric hoist.

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