crane

Abstract

The present application relates to the technical field of working machine, especially relates to a crane, the crane comprises: a frame; a control room, the control room is arranged on the frame; a turret mechanism, the turret mechanism is rotatably arranged on the frame and is located on one side of the control room; a counterweight combination, the counterweight combination is internally provided with a groove structure; a hoisting mechanism is arranged in the groove structure, the hoisting mechanism is integrated in the counterweight combination, so as to replace the prior art that the counterweight block is installed below the hoisting mechanism, the structure of the hoisting mechanism and the counterweight combination is optimized, and an integral whole is formed.The crane provided by the present application avoids the phenomenon that the counterweight block is installed below the hoisting mechanism, so that the turret mechanism is easy to interfere with the control room during rotation; the integrated design of the counterweight and the hoisting mechanism optimizes the structure, reduces the occupied space, and meets the working needs of the crane in a narrow space.

Description

Technical Field

[0001] This invention relates to the field of construction machinery technology, and more particularly to a crane. Background Technology

[0002] Currently, the main types of construction machinery used in lifting operations include truck cranes, crawler cranes, tire cranes, tower cranes, bridge cranes, and gantry cranes. However, in space-constrained areas such as ports and factories, large cranes cannot meet the space requirements. Therefore, a smaller industrial crane is needed to meet the needs of lifting, handling, and maintenance in space-constrained areas. Currently, there are various structural forms for the winch reducer and counterweight of large cranes, including: the winch reducer is mounted on the winch box, and the counterweight is connected to the winch box via a pin; or the winch reducer is mounted on the winch box, and the counterweight is connected to the winch box via bolts; or the winch reducer is mounted on the winch box, and a hydraulic cylinder is installed on the winch box, with the counterweight connected via the hydraulic cylinder, etc. In all of these structural forms, the winch box is connected to the turntable base by welding or other fixing methods, the counterweight is installed below the winch box, and the operator's cab can only be installed on the turntable, resulting in a large space occupation and failing to meet the needs of working in confined spaces. For small industrial cranes, the overall size of the vehicle cannot be guaranteed. Summary of the Invention

[0003] This invention provides a crane that solves the problem that in the prior art, the counterweight is installed below the winch box, resulting in a large space occupation and failing to meet the needs of working in confined spaces.

[0004] This invention provides a crane, comprising:

[0005] Frame;

[0006] The operator's cab is mounted on the vehicle frame;

[0007] A turntable mechanism is rotatably mounted on the vehicle frame and located on one side of the operator's cab, with the operator's cab located within the rotation range of the turntable mechanism;

[0008] A counterweight assembly is mounted on the turntable mechanism, and the counterweight assembly has a groove structure inside.

[0009] A hoisting mechanism is provided in the trough structure.

[0010] According to a crane provided by the present invention, the counterweight assembly comprises:

[0011] Box;

[0012] A counterweight is disposed inside the box and surrounds the groove structure.

[0013] According to a crane provided by the present invention, the counterweight assembly further includes:

[0014] The first positioning element is disposed on the inner side wall of the box body;

[0015] The second positioning component is disposed on the outer side of the counterweight block, and the second positioning component is used to insert and cooperate with the first positioning component so that the counterweight block is positioned and assembled to the designated position of the box body.

[0016] According to a crane provided by the present invention, the first positioning member includes: a first positioning block, the first positioning block being disposed on the bottom plate of the housing; the second positioning member includes: a first positioning hole disposed on the bottom surface of the counterweight block, the first positioning hole being inserted into and engaged with the first positioning block.

[0017] Alternatively, the first positioning element includes a second positioning hole on the bottom plate of the box body, and the second positioning element includes a second positioning block, which is located on the bottom surface of the counterweight block and is inserted into the second positioning hole.

[0018] According to a crane provided by the present invention, the counterweight assembly further includes: a first locking member;

[0019] The bottom plate of the box is provided with a first mounting hole, which is used for assembling the first locking member, and the first locking member is used for locking connection with the counterweight.

[0020] According to a crane provided by the present invention, the hoisting mechanism includes:

[0021] hoist box;

[0022] A drive unit is located inside the winch box.

[0023] According to the present invention, a crane further includes a lifting arm connected to the turntable mechanism, wherein the maximum height of the turntable mechanism is greater than the maximum height of the lifting arm when it is horizontal.

[0024] According to a crane provided by the present invention, when the boom is horizontal, the maximum height of the boom head is greater than or equal to the maximum height of the turntable mechanism.

[0025] According to a crane provided by the present invention, the hoisting mechanism further includes: a second locking member;

[0026] The bottom plate of the housing is provided with a second mounting hole, which is used for assembling the second locking member, and the second locking member is used for locking and connecting with the winch box.

[0027] According to a crane provided by the present invention, the counterweight assembly includes a plurality of counterweight blocks, and the plurality of counterweight blocks are disposed close to the outer wall of the housing, and the hoisting mechanism is embedded in the plurality of counterweight blocks.

[0028] This invention provides a crane comprising: a frame, an operator's cab, a turntable mechanism, a counterweight assembly, and a hoisting mechanism. The hoisting mechanism is integrated into the counterweight assembly, replacing the prior art where the counterweight is installed below the hoisting mechanism. The structure of the hoisting mechanism and the counterweight assembly is optimized to form a single unit, supported by the turntable mechanism and driven to rotate by a slewing reducer. This invention avoids the interference between the counterweight and the operator's cab during turntable rotation caused by the counterweight being installed below the hoisting mechanism. The integrated design of the counterweight and hoisting mechanism optimizes the structure, reduces space occupation, and meets the crane's operating needs in confined spaces. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a first-view structural schematic diagram of a crane provided in one embodiment of the present invention;

[0031] Figure 2 This is a second-view structural schematic diagram of the crane provided in one embodiment of the present invention;

[0032] Figure 3 This is a top view of the crane provided in one embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the turntable mechanism and housing provided in one embodiment of the present invention.

[0034] Figure label:

[0035] 1: Chassis; 2: Operator's cab; 3: Turntable mechanism; 4: Counterweight assembly; 41: Housing; 411: First positioning component; 42: Counterweight block; 5: Winch mechanism; 51: Winch box; 52: Reducer; 53: Motor; 54: Balance valve; 6: First locking component; 7: Second locking component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0039] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] 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 the present invention. 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.

[0041] The following is combined Figures 1 to 4 This invention describes a crane. The crane includes: a frame 1, an operator's cab 2, a turntable mechanism 3, a counterweight assembly 4, and a hoisting mechanism 5.

[0042] Among them, the frame 1 is the supporting structure for the lower part of the crane; the operator's cab 2 is located on the frame 1; the turntable mechanism 3 is rotatably located on the frame 1 and is located on one side of the operator's cab 2, and the operator's cab 2 is located within the rotation range of the turntable mechanism 3; the counterweight assembly 4 is located on the turntable mechanism 3 and has a trough structure inside; the hoisting mechanism 5 is located in the trough structure.

[0043] Specifically, the operator's cab 2 is fixedly mounted on the frame 1 and located below the rotation range of the turntable mechanism 3. Depending on the installation requirements of different cranes, the operator's cab 2 is embedded within the frame 1, further saving installation space. Furthermore, since the operator's cab is fixed to the frame 1 and does not rotate with the turntable mechanism 3, the space occupied by the turntable is reduced. Because small industrial cranes have size requirements, placing the operator's cab 2 on the turntable would easily result in excessive overall height. Embedding the operator's cab 2 within the frame 1 requires the turntable mechanism 3 to rotate 360°; therefore, the gap between the counterweight assembly 4 and the top of the operator's cab 2 must be at least 60mm.

[0044] In this embodiment, the hoisting mechanism 5 is integrated into the counterweight assembly 4, replacing the prior art where the counterweight block 42 is installed below the hoisting mechanism 5. The structure of the hoisting mechanism 5 and the counterweight assembly 4 is optimized in this embodiment to form a single unit, supported by the turntable mechanism 3 and driven to rotate by the rotary reducer 52. This arrangement avoids the interference between the counterweight block 42 and the operator's cab 2 during the rotation of the turntable mechanism 3, which is caused by the counterweight block 42 being installed below the hoisting mechanism 5. Furthermore, the integrated design of the counterweight and hoisting mechanism 5 optimizes the structure, reduces space occupation, and meets the crane's working needs in confined spaces.

[0045] A groove structure is formed in the counterweight assembly 4. This groove structure is used to embed and install the hoisting mechanism 5 and is fixed to form an integral structure, so that the integral structure has a counterweight function and also provides a hoisting installation position. The structure is reasonably arranged.

[0046] This invention provides a crane comprising: a frame 1, an operator's cab 2, a turntable mechanism 3, a counterweight assembly 4, and a hoisting mechanism 5. The hoisting mechanism 5 is integrated into the counterweight assembly 4, replacing the prior art where the counterweight block 42 is installed below the hoisting mechanism 5. The structure of the hoisting mechanism 5 and the counterweight assembly 4 is optimized to form a single unit, supported by the turntable mechanism 3 and driven to rotate by a rotary reducer 52. This invention avoids the interference between the counterweight block 42 and the operator's cab 2 during the rotation of the turntable mechanism 3, which is caused by the counterweight block 42 being installed below the hoisting mechanism 5. The integrated design of the counterweight and the hoisting mechanism 5 optimizes the structure, reduces space occupation, and meets the crane's working needs in confined spaces.

[0047] In one embodiment of the present invention, the counterweight assembly 4 includes a housing 41 and a counterweight block 42. The counterweight block 42 is disposed inside the housing 41 and forms a groove structure. In this embodiment, the counterweight assembly 4 consists of the housing 41 and the counterweight block 42. The housing 41 serves as the load-bearing and supporting part for the counterweight block 42 and the hoisting mechanism 5. The counterweight block 42 serves as the counterweight part of the counterweight assembly 4, installed inside the housing 41, and forming a groove structure within the housing 41 for mounting the hoisting mechanism 5. In this embodiment, by equipping the housing 41 with the counterweight block 42, the counterweight requirement is met. Furthermore, the arrangement of the counterweight block 42 forms an installation position for placing the hoisting mechanism 5. This arrangement of the counterweight block 42 replaces the need for a separate limiting structure for the hoisting mechanism 5 in the prior art, simplifying the structure.

[0048] In one embodiment of the invention, the housing 41 is enclosed by a base plate and multiple surrounding plates to form an area for assembling the counterweight 42 and the hoisting mechanism 5. In another embodiment of the invention, the turntable mechanism 3 consists of a turntable base and a support frame. One end of the support frame is connected to the turntable base, and the turntable base is connected to a rotary reducer 52. Driven by the rotary reducer 52, the turntable base can rotate 360°, causing the support frame to rotate synchronously. The counterweight assembly 4 is connected to the other end of the support frame and rotates synchronously with the turntable mechanism 3.

[0049] In one embodiment of the present invention, the counterweight assembly 4 further includes a first positioning member 411 and a second positioning member. The first positioning member 411 is disposed on the inner sidewall of the housing 41; the second positioning member is disposed on the outer side surface of the counterweight 42, and the second positioning member is used to engage with the first positioning member 411 to position the counterweight 42 at a designated location on the housing 41. In this embodiment, by providing the first positioning member 411 on the housing 41 and the second positioning member on the counterweight 42, when the counterweight 42 is assembled inside the housing 41, the engagement between the first positioning member 411 and the second positioning member enables the positioning of the counterweight 42 within the housing 41, facilitating rapid assembly of the counterweight 42.

[0050] In one embodiment of the present invention, the first positioning member 411 includes a first positioning block disposed on the bottom plate of the housing 41, and the second positioning member includes a first positioning hole disposed on the bottom surface of the counterweight 42, the first positioning hole being inserted into the first positioning block; or, the first positioning member 411 includes a second positioning hole disposed on the bottom plate of the housing 41, and the second positioning member includes a second positioning block disposed on the bottom surface of the counterweight 42, the second positioning block being inserted into the second positioning hole. In this embodiment, the first positioning member 411 and the second positioning member are respectively inserted into each other in the form of a positioning block and a positioning hole. When the counterweight 42 is assembled, the positioning block can be inserted into the corresponding positioning hole to achieve the positioning of the counterweight 42 and the housing 41, which facilitates the rapid assembly of the counterweight 42.

[0051] In one embodiment of the present invention, the counterweight assembly 4 further includes: a first locking member 6; a first mounting hole is provided on the bottom plate of the housing 41, the first mounting hole is used for assembling the first locking member 6, and the first locking member 6 is used for locking and connecting with the counterweight block 42. In this embodiment, the first locking member 6 passes through the first mounting hole to lock the counterweight block 42 into the housing 41, preventing the counterweight block 42 from shaking during the rotation of the turntable mechanism 3, and ensuring the stable installation of the counterweight block 42. Preferably, the first locking member 6 in this embodiment can be a bolt, and the first mounting hole can be an oblong hole. The bolt passes through the oblong hole and engages with the threaded hole at the bottom of the counterweight block 42. Multiple bolts are used to position the counterweight block 42 at multiple points, ensuring that the counterweight block 42 is fixed inside the housing 41. If it is necessary to remove the counterweight block 42, the bolt is unscrewed and it can be removed. It should be understood that the counterweight block 42 can also be directly welded and fixed inside the housing 41. The present invention is not limited to fixing the counterweight block by bolts or welding as described above.

[0052] In one embodiment of the present invention, the hoisting mechanism 5 includes a hoisting box 51 and a drive unit, the drive unit being located inside the hoisting box 51. Specifically, the drive unit includes a reducer 52, a motor 53, and a balance valve 54. The reducer 52 is located inside the hoisting box 51; the motor 53 is connected to the reducer 52; and the balance valve 54 is connected to the motor 53. In this embodiment, since the motor 53 and the balance valve 54 are located outside the hoisting box 51, the groove structure formed by the counterweight 42 should have corresponding gaps to allow for the assembly space of the motor 53 and the balance valve 54, while also facilitating the maintenance of the motor 53 and the balance valve 54.

[0053] In one embodiment of the present invention, the crane further includes a lifting boom connected to a turntable mechanism 3, wherein the maximum height of the turntable mechanism 3 is greater than the maximum height of the lifting boom when it is horizontal. Preferably, the maximum height of the turntable mechanism 3 is no greater than 20 cm of the maximum height of the lifting boom when it is horizontal, thereby enabling control of the overall height of the crane.

[0054] In one embodiment of the present invention, when the lifting arm is horizontal, the maximum height of the lifting arm head is greater than or equal to the maximum height of the turntable mechanism 3, and the difference between the two is in the range of 0-10 cm.

[0055] In one embodiment of the present invention, the winch mechanism 5 further includes a second locking member 7; a second mounting hole is provided on the bottom plate of the housing 41, the second mounting hole is used for assembling the second locking member 7, and the second locking member 7 is used for locking and connecting with the winch box 51. In this embodiment, the second locking member 7 passes through the second mounting hole to lock the winch box 51 into the housing 41, preventing the winch mechanism 5 from shaking during the rotation of the turntable mechanism 3, and ensuring the stable installation of the winch mechanism 5. Preferably, the second locking member 7 in this embodiment can be a bolt, and the second mounting hole can be a slotted hole. The bolt passes through the slotted hole and engages with the threaded hole at the bottom of the winch box 51. Multiple bolts are used to position the winch box 51 at multiple points, ensuring that the winch box 51 is fixed inside the housing 41. If it is necessary to remove the winch mechanism 5 or the winch box 51, the bolts can be unscrewed and the winch box 51 can be removed. It should be understood that the winch box 51 can also be directly welded and fixed inside the housing 41. The present invention is not limited to the above-mentioned method of fixing and installing the winch box 51 by screws or welding.

[0056] In one embodiment of the present invention, the counterweight assembly 4 includes multiple counterweight blocks 42, which are disposed close to the outer wall of the housing 41, and the hoisting mechanism 5 is embedded in the multiple counterweight blocks 42. In this embodiment, the counterweight blocks 42 can be designed with corresponding shapes and numbers according to the shapes of the housing 41 and the hoisting mechanism 5, so as to meet the counterweight requirements of the counterweight assembly 4 and the installation requirements of the hoisting mechanism 5. Preferably, the counterweight assembly 4 is equipped with three counterweight blocks 42, which are respectively located on the left and right sides and the front side inside the housing 41, and the hoisting mechanism 5 is installed on the rear side of the housing 41, so that the hoisting mechanism 5 is embedded in the middle of the multiple counterweight blocks 42. The above design not only makes it easy to put the hoisting mechanism 5 into the counterweight assembly 4, which is beneficial for installation, but also ensures the counterweight balance of the counterweight assembly 4, and avoids the problem of left and right weight imbalance, thereby improving its service life.

[0057] Based on the above embodiments, the present invention provides a method for processing and assembling the above-mentioned device, comprising: the counterweight assembly 4 is an overall box-shaped structure, with a first positioning block welded inside for guiding the assembly of the counterweight blocks 42; the counterweight assembly 4 is welded together with the turntable mechanism 3 to form a welded assembly; a reducer 52 is installed inside the winch box 51, and a motor 53 and a balance valve 54 are installed on the reducer 52; finally, the three counterweight blocks 42 are installed into the box 41 and fixed with bolts; then, the winch mechanism 5 is installed as a whole into the counterweight assembly 4 and fixed with bolts to the winch box 51.

[0058] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crane, characterized in that, include: Frame (1); The operator's cab (2) is mounted on the vehicle frame (1); Turntable mechanism (3), the turntable mechanism (3) is rotatably mounted on the frame (1) and located on one side of the control room (2), and the control room (2) is located within the rotation range of the turntable mechanism (3); A counterweight assembly (4) is mounted on the turntable mechanism (3), and the counterweight assembly (4) has a groove structure inside; A hoisting mechanism (5) is provided in the trough structure.

2. The crane according to claim 1, characterized in that, The counterweight assembly (4) includes: Box (41); A counterweight (42) is disposed inside the box (41) and surrounds the groove structure.

3. The crane according to claim 2, characterized in that, The counterweight assembly (4) also includes: The first positioning element (411) is disposed on the inner side wall of the box (41); The second positioning member is disposed on the outer side of the counterweight (42) and is used to engage with the first positioning member (411) so that the counterweight (42) is positioned and assembled at the designated position of the box (41).

4. The crane according to claim 3, characterized in that, The first positioning component (411) includes: a first positioning block, which is disposed on the bottom plate of the box (41); the second positioning component includes: a first positioning hole disposed on the bottom surface of the counterweight (42), which is inserted into the first positioning block. Alternatively, the first positioning element (411) may include a second positioning hole provided on the bottom plate of the box body (41), and the second positioning element may include a second positioning block provided on the bottom surface of the counterweight block (42), and the second positioning block may be inserted into the second positioning hole.

5. The crane according to claim 2, characterized in that, The counterweight assembly (4) further includes: a first locking element (6); The bottom plate of the box (41) is provided with a first mounting hole, which is used for assembling the first locking member (6) and the first locking member (6) is used for locking connection with the counterweight (42).

6. The crane according to claim 2, characterized in that, The hoisting mechanism (5) includes: Hoist box (51); The drive unit is located inside the winch box (51).

7. The crane according to claim 1, characterized in that, Also includes: The lifting arm is connected to the turntable mechanism (3), and the maximum height of the turntable mechanism (3) is greater than the maximum height of the lifting arm when it is horizontal.

8. The crane according to claim 7, characterized in that, When the lifting arm is placed horizontally, the maximum height of the lifting arm head is greater than or equal to the maximum height of the turntable mechanism (3).

9. The crane according to claim 6, characterized in that, The hoisting mechanism (5) further includes: a second locking element (7); The bottom plate of the housing (41) is provided with a second mounting hole, which is used for assembling the second locking member (7), and the second locking member (7) is used for locking and connecting with the winch box (51).

10. The crane according to any one of claims 2 to 9, characterized in that, The counterweight assembly (4) includes multiple counterweight blocks (42), and the multiple counterweight blocks (42) are arranged close to the outer wall of the housing (41). The hoisting mechanism (5) is embedded in the multiple counterweight blocks (42).

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