Overhead hoist mechanism for a tyre crane

Abstract

The utility model discloses a kind of overhead crane mechanisms of tyre crane, it is related to tyre crane technical field, comprising: tyre walking device, hoisting device;Hoisting device is located on the upper end of tyre walking device, for the lifting handling work of goods;Hoisting device includes rotating disc rotating on tyre walking device, when needing long time to tilt lifting goods, two driving ends of double-end drive motor synchronous rotation, respectively drive two transmission screw rod rotation, transmission screw rod moves with the sliding plate of screw connection horizontally to telescopic part direction, the clamping block on sliding plate will be exposed to the outlet, and tightly act on telescopic part outer wall, the clamping block of left and right sides is clamped to telescopic part, auxiliary to telescopic part is limited, reduce the load of first drive cylinder, improve the service life of first drive cylinder, prevent the output end of first drive cylinder from being easily damaged.

Description

Technical Field

[0001] This utility model relates to the field of tire crane technology, and more specifically to an overhead crane mechanism for a tire crane. Background Technology

[0002] A tire-mounted crane is a type of mobile crane mounted on a tire-mounted chassis. It combines the advantages of truck cranes and crawler cranes, offering good mobility and maneuverability. It can travel on ordinary roads and also operate in more complex terrain conditions.

[0003] The existing overhead crane mechanism of the tire crane uses an external or internal linear drive structure to drive the telescopic beam to extend and retract. During long-term tilting and lifting of goods, the output end of the linear drive structure will bear a large load, which will reduce its service life and make it easy to be damaged. Utility Model Content

[0004] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an overhead lifting mechanism for a tire-mounted crane.

[0006] To achieve the above objectives, the technical solution of this utility model is: an overhead lifting mechanism for a tire-mounted crane, comprising: a tire-mounted traveling device and a lifting device; the lifting device is located at the upper end of the tire-mounted traveling device and is used for lifting and transporting goods.

[0007] The lifting device includes a turntable that rotates on a tire-type traveling device. A support rod is hinged to the turntable. A telescopic crossbeam is hinged to the end of the support rod away from the turntable. A hook is connected to the end of the telescopic crossbeam away from the support rod via a lifting rope.

[0008] The telescopic crossbeam includes a positioning beam and a telescopic beam. The positioning beam is provided with a telescopic slot. One end of the telescopic beam extends to form a telescopic part. The telescopic part slides into the telescopic slot. A limiting sleeve is provided at the opening of the telescopic slot to fit the telescopic part and to further restrict the telescopic part. A first drive cylinder is provided in the telescopic slot to drive the telescopic part to extend or retract into the telescopic slot.

[0009] Preferably, in order to assist in restricting the movement of the telescopic part, thereby improving the service life of the first drive cylinder and preventing easy damage to the output end of the first drive cylinder, the limiting sleeve includes a limiting shell. The limiting shell has a limiting opening in the middle that movably engages with the telescopic part. The bottom surface of the limiting opening has an assembly groove. A dual-head drive motor is installed in the middle section of the assembly groove. The two drive ends of the dual-head drive motor are horizontally oriented towards the inner walls of the left and right sides of the assembly groove, respectively. Each drive end of the dual-head drive motor is driven by a transmission screw. Each inner wall of the left and right sides of the limiting opening has a sliding cavity. The bottom end of the sliding cavity communicates with the assembly groove. The sliding cavity has an extension opening facing the telescopic part. A sliding plate is horizontally slidably installed in each of the two sliding cavities. The bottom of the two sliding plates is threadedly connected to the two transmission screws, respectively. The outer wall of the sliding plate has a clamping block that movably protrudes through the extension opening.

[0010] Preferably, in order to allow the hinge to swing up and down, the end of the positioning beam away from the telescopic beam is connected to the support rod hinge.

[0011] Preferably, in order to perform dual-segment hinge drive, the middle section of the support rod is provided with a second drive cylinder to drive the hinge of the positioning beam to swing, and the tire-type walking device is provided with a third drive cylinder to drive the hinge of the support rod to swing.

[0012] Preferably, in order to adapt to complex terrain, the tire-type running gear is specifically one of a gasoline-powered vehicle or an electric-powered vehicle.

[0013] As a preferred option, for ease of operation, the driver's cab of the tire-type walking device is equipped with a control terminal for controlling the operation of the limiting sleeve.

[0014] As a preferred embodiment, in order to further improve the clamping and limiting force, the clamping block is specifically a cylindrical structure with several protruding particles on its end face facing the telescopic part. The end face of the telescopic part facing the clamping block is provided with a grid plate. When the clamping block contacts the telescopic part, several protruding particles are interlaced and embedded in the slots of the grid plate.

[0015] The beneficial effects of this utility model are as follows: When goods need to be tilted and lifted for a long time, the two drive ends of the dual-head drive motor rotate synchronously, driving the two transmission screws to rotate respectively. The transmission screws drive the threaded sliding plate to move horizontally towards the telescopic part. The clamping blocks on the sliding plate will protrude through the extension and act tightly on the outer wall of the telescopic part. The clamping blocks on the left and right sides clamp the telescopic part, which helps to restrict the telescopic part, reduce the load on the first drive cylinder, improve the service life of the first drive cylinder, and prevent the output end of the first drive cylinder from being easily damaged. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overhead lifting mechanism of a tire-type crane according to the present invention;

[0017] Figure 2This is a side view of the overhead lifting mechanism of a tire-type crane according to the present invention.

[0018] Figure 3 This is a side sectional view of the telescopic beam structure.

[0019] Figure 4 This is a frontal cross-sectional view of the restrictor sleeve.

[0020] Figure 5 This is a schematic diagram of the constraint connection structure between the clamping block and the grid plate.

[0021] Reference numerals: Tire-type walking device-1, Lifting device-2, Turntable-21, Support rod-22, Telescopic crossbeam-23, Hook-24, Third drive cylinder-25, Second drive cylinder-26, Positioning beam-231, Telescopic beam-232, Telescopic slot-233, Telescopic part-234, Restriction sleeve-235, First drive cylinder-236, Restriction shell-2351, Restriction port-2352, Assembly slot-2353, Dual-head drive motor-2354, Transmission screw-2355, Sliding cavity-2356, Extension port-2357, Sliding plate-2358, Clamping block-2359, Grid plate-2341, Protruding particles-23591, Bearing-23531. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-5 This utility model provides an overhead lifting mechanism for a tire-mounted crane, including: a tire-mounted traveling device 1 and a lifting device 2; the lifting device 2 is located at the upper end of the tire-mounted traveling device 1 and is used for lifting and transporting goods.

[0025] The lifting device 2 includes a turntable 21 that is rotatably mounted on a tire-type traveling device 1. A support rod 22 is hinged to the turntable 21. A telescopic crossbeam 23 is hinged to the end of the support rod 22 away from the turntable 21. A hook 24 is connected to the end of the telescopic crossbeam 23 away from the support rod 22 via a lifting rope.

[0026] The telescopic beam 23 includes a positioning beam 231 and a telescopic beam 232. The positioning beam 231 is provided with a telescopic slot 233. One end of the telescopic beam 232 extends to form a telescopic part 234. The telescopic part 234 slides into the telescopic slot 233. A limiting sleeve 235 is provided at the opening of the telescopic slot 233 to fit the telescopic part 234 and to further restrict the telescopic part 234. A first drive cylinder 236 is provided in the telescopic slot 233 to drive the telescopic part 234 to extend or retract into the telescopic slot 233.

[0027] To assist in restricting the movement of the telescopic part 234, thereby improving the service life of the first drive cylinder 236 and preventing easy damage to its output end, the limiting sleeve 235 includes a limiting outer shell 2351. The limiting outer shell 2351 has a limiting opening 2352 in its middle section that movably engages with the telescopic part 234. The bottom surface of the limiting opening 2352 has an assembly groove 2353. A dual-head drive motor 2354 is installed in the middle section of the assembly groove 2353. The two drive ends of the dual-head drive motor 2354 are horizontally oriented towards the left and right inner walls of the assembly groove 2353, respectively. Both drive ends of the motor 2354 are equipped with a transmission screw 2355. The inner walls of the left and right sides of the limiting port 2352 are each provided with a sliding cavity 2356. The bottom end of the sliding cavity 2356 communicates with the assembly groove 2353. The sliding cavity 2356 is provided with an extension opening 2357 facing the telescopic part 234. The two sliding cavities 2356 are each provided with a sliding plate 2358 that slides horizontally. The bottom of the two sliding plates 2358 is respectively threadedly connected to the two transmission screws 2355. The outer wall of the sliding plate 2358 is provided with a clamping block 2359 that moves through the extension opening 2357.

[0028] The sliding plate 2358 has an internal threaded hole at its bottom that corresponds to the transmission screw 2355, and the inner wall of the assembly groove 2353 is provided with a bearing 23531 for rotating and positioning the transmission screw 2355.

[0029] When goods need to be lifted at an angle for an extended period of time, the two drive ends of the dual-head drive motor 2354 rotate synchronously, driving the two transmission screws 2355 to rotate respectively. The transmission screws 2355 drive the threaded sliding plate 2358 to move horizontally towards the telescopic part 234. The clamping blocks 2359 on the sliding plate 2358 protrude through the extension opening 2357 and act tightly on the outer wall of the telescopic part 234. The clamping blocks 2359 on the left and right sides clamp the telescopic part 234, helping to restrict the telescopic part 234, reducing the load on the first drive cylinder 236, improving the service life of the first drive cylinder 236, and preventing the output end of the first drive cylinder 236 from being easily damaged.

[0030] According to some embodiments of this application, optionally, in order to allow the hinge to swing up and down, the end of the positioning beam 231 away from the telescopic beam 232 is hinged to the support rod 22.

[0031] According to some embodiments of this application, optionally, in order to perform dual-segment hinge drive, the middle section of the support rod 22 is provided with a second drive cylinder 26 for driving the hinge swing of the positioning beam 231, and the tire-type walking device 1 is provided with a third drive cylinder 25 for driving the hinge swing of the support rod 22.

[0032] Among them, the first drive cylinder 236, the second drive cylinder 26, and the third drive cylinder 25 are one of electric cylinders, hydraulic cylinders, and pneumatic cylinders, with electric cylinders being preferred to ensure high-precision control.

[0033] According to some embodiments of this application, optionally, in order to adapt to complex terrain, the tire-type walking device 1 is specifically a gasoline-powered vehicle or an electric-powered vehicle, preferably an electric-powered vehicle, which effectively reduces emissions, provides greater torque at startup, has low noise during operation, smooth acceleration, and lower charging costs.

[0034] According to some embodiments of this application, optionally, for ease of operation, the driver's cab of the tire-type walking device 1 is provided with a control terminal for controlling the operation of the limiting sleeve 235. The control terminal is connected to the dual-head drive motor 2354 via radio signal and can control the dual-head drive motor 2354 to drive the transmission screw 2355 to rotate forward or backward.

[0035] According to some embodiments of this application, optionally, in order to further improve the clamping and restricting force, the clamping block 2359 is specifically a cylindrical structure, with a plurality of protruding particles 23591 on its end face facing the telescopic part 234, and a grid plate 2341 is provided on the end face of the telescopic part 234 facing the clamping block 2359. When the clamping block 2359 contacts the telescopic part 234, the plurality of protruding particles are interleaved and embedded in the slots of the grid plate 2341.

[0036] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0037] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0038] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A high-lift mechanism for a tire-mounted crane, characterized in that, include: Tire-type walking device (1); The lifting device (2) is located on the upper end of the tire-type walking device (1) and is used for lifting and transporting goods. The lifting device (2) includes a turntable (21) that is rotatably mounted on a tire-type traveling device (1). A support rod (22) is hinged to the turntable (21). A telescopic crossbeam (23) is hinged to the end of the support rod (22) away from the turntable (21). A hook (24) is connected to the end of the telescopic crossbeam (23) away from the support rod (22) via a lifting rope. The telescopic beam (23) includes a positioning beam (231) and a telescopic beam (232). The positioning beam (231) is provided with a telescopic slot (233). One end of the telescopic beam (232) extends to form a telescopic part (234). The telescopic part (234) slides into the telescopic slot (233). A limiting sleeve (235) is provided at the opening of the telescopic slot (233) to fit the telescopic part (234) and to assist in restricting the telescopic part (234). A first drive cylinder (236) is provided in the telescopic slot (233) to drive the telescopic part (234) to extend or retract into the telescopic slot (233).

2. The overhead lifting mechanism of a tire-mounted crane according to claim 1, characterized in that, The limiting sleeve (235) includes a limiting outer shell (2351). The limiting outer shell (2351) has a limiting opening (2352) in its middle section that movably engages with the telescopic part (234). The bottom surface of the limiting opening (2352) has an assembly groove (2353). A dual-head drive motor (2354) is installed in the middle section of the assembly groove (2353). The two drive ends of the dual-head drive motor (2354) are horizontally oriented towards the left and right inner walls of the assembly groove (2353), respectively. Each drive end of the dual-head drive motor (2354) is equipped with a transmission screw (2355). A sliding cavity (2356) is provided on the inner walls of both sides of the opening (2352). The bottom end of the sliding cavity (2356) is connected to the assembly groove (2353). The sliding cavity (2356) is provided with an extension opening (2357) facing the telescopic part (234). A sliding plate (2358) is horizontally slidably provided in both sliding cavities (2356). The bottom of the two sliding plates (2358) is respectively threadedly connected to two transmission screws (2355). A clamping block (2359) is provided on the outer wall of the sliding plate (2358) that movably protrudes through the extension opening (2357).

3. The overhead lifting mechanism of a tire-mounted crane according to claim 1, characterized in that, The end of the positioning beam (231) away from the telescopic beam (232) is hinged to the support rod (22).

4. The overhead lifting mechanism of a tire-mounted crane according to claim 3, characterized in that, The middle section of the support rod (22) is equipped with a second drive cylinder (26) that drives the positioning beam (231) to swing.

5. The overhead lifting mechanism of a tire-mounted crane according to claim 1, characterized in that, The tire-type walking device (1) is equipped with a third drive cylinder (25) that drives the support rod (22) to swing.

6. The overhead lifting mechanism of a tire-mounted crane according to claim 5, characterized in that, The tire-type running device (1) is specifically one of the oil-powered or electric-powered vehicles.

7. The overhead lifting mechanism of a tire-mounted crane according to claim 6, characterized in that, The driver's cab of the tire-type walking device (1) is equipped with a control terminal for controlling the operation of the control limit sleeve (235).

8. The overhead lifting mechanism of a tire-mounted crane according to claim 2, characterized in that, The clamping block (2359) is specifically a cylindrical structure. Its end face facing the telescopic part (234) is provided with several protruding particles (23591). The end face of the telescopic part (234) facing the clamping block (2359) is provided with a grid plate (2341). When the clamping block (2359) contacts the telescopic part (234), several protruding particles are interlaced and embedded in the slots of the grid plate (2341).

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