Cantilever crane

Abstract

The utility model discloses a cantilever crane which comprises a supporting rod, an installation assembly is fixed to the bottom of the supporting rod, a transmission gear is fixedly connected to the outer side of the supporting rod, a fixing sleeve is connected to the top end of the supporting rod in a threaded mode, a rotating shaft is movably connected to the top of the fixing sleeve in a penetrating mode, and a rotating disc is fixedly connected to the bottom end of the rotating shaft. The outer side of the rotating shaft is fixedly connected with a cantilever body, the bottom of the cantilever body is fixedly connected with a rotating frame, the top of the rotating frame is fixedly connected with a rotating mechanism, and the front face and the back face of the cantilever body are each provided with an adjusting groove; the outer side of the cantilever body is movably connected with a lifting frame through an adjusting groove, the front face of the lifting frame is fixedly connected with a moving assembly, the bottom of the lifting frame is fixedly connected with a lifting mechanism, and a fixing sleeve, a rotating shaft, a rotating disc and a steel ball are arranged, so that the structure of a rotating part is simpler and more convenient; therefore, the maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cantilever cranes, in particular to a cantilever crane. Background Art

[0002] Jib cranes are small and medium-sized lifting equipment developed in recent years. They have unique structures, are safe and reliable, and have the characteristics of high efficiency, energy saving, time saving, labor saving, and flexibility. They can be operated freely in three-dimensional space. In short-distance and intensive transportation situations, they are more superior than other conventional lifting equipment. Therefore, they are widely used in different places in various industries. The working strength of the cantilever crane is light. The crane consists of a column, a slewing arm slewing drive device and an electric hoist. The lower end of the column is fixed to the concrete foundation by anchor bolts. The cycloidal pinwheel reduction device drives the slewing arm to rotate. The electric hoist runs straight left and right on the slewing arm I-beam and lifts heavy objects.

[0003] The patent document with the prior art publication number CN212475884U provides a cantilever crane, which includes a support column, an upper column, and a lower column arranged in the support column; an oil cylinder is arranged inside the support column, and the piston rod of the oil cylinder is fixedly connected to the bottom of the lower column; at least four sliders are evenly distributed on the outer wall of the lower end of the lower column, and the inner wall of the support column is provided with a slide groove matching the position of the slider; two groups of thrust rod structures are arranged on the side of the upper column, and a permanent magnet is arranged on the upper column just above the fixed block; an upper column connecting piece is arranged on the outer wall of the lower end of the upper column, and a circle of circular rings is arranged on the upper end of the lower column. A pin shaft hole is opened on the upper column connecting piece, and a circle of pin shaft holes is opened on the circular ring, and the pin shaft hole of the upper column connecting piece is matched with the pin shaft hole on the circular ring; an overload sensing hanging shaft is arranged at the top suspension of the electric hoist. The utility model relates to a cantilever crane, which realizes the lifting function of the crane column, has a wider range of adaptability, can be positioned by rotation, and prevents overloading.

[0004] However, the existing cantilever crane needs to lift heavier goods when in use, and after lifting, the goods need to be transported to the placement location by the cantilever crane. When the cantilever crane is transporting the goods, the weight of the goods causes the cantilever crane to generate a large burden during the rotation process, and the rotating parts of the cantilever crane are prone to damage or jamming due to their complex structure. When maintenance is required, it is not convenient to disassemble and maintain, resulting in difficulty in maintenance. For this reason, we propose a cantilever crane. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a cantilever crane to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a cantilever crane comprises a support rod, a mounting assembly is fixedly provided at the bottom of the support rod, a transmission gear is fixedly connected to the outer side of the support rod, a fixing sleeve is threadedly connected to the top of the support rod, a rotating shaft is movably connected through the top of the fixing sleeve, a rotating disk is fixedly connected to the bottom of the rotating shaft, steel balls are respectively embedded in the outer sides of the rotating disk and are movably connected, a cantilever body is fixedly connected to the outer side of the rotating shaft, a rotating frame is fixedly connected to the bottom of the cantilever body, a rotating mechanism is fixedly connected to the top of the rotating frame, adjusting slots are respectively provided on the front and back sides of the cantilever body, a lifting frame is movably connected to the outer side of the cantilever body through the adjusting slot, a moving assembly is fixedly connected to the front side of the lifting frame, and a lifting mechanism is fixedly connected to the bottom of the lifting frame.

[0009] Preferably, the mounting assembly comprises a mounting seat and a mounting opening, the mounting seat is fixedly connected to the bottom of the support rod, and the mounting opening is provided on the top of the mounting seat.

[0010] Preferably, the moving assembly includes a pulley and a moving motor, the moving motor is fixedly connected to the front side of the lifting frame, the pulley is movably connected to the inner side of the lifting frame, four pulleys are provided, and one of the pulleys is fixedly connected to the moving motor.

[0011] Preferably, the lifting mechanism includes a lifting motor and a winding drum, the lifting motor is fixedly connected to the bottom of the lifting frame, the driving end of the lifting motor is fixedly connected to the winding drum, and the outer side of the winding drum is movably connected to the lifting device assembly.

[0012] Preferably, the sling assembly comprises a sling rope and a sling hook, the sling rope is movably connected to the outside of the winding drum, and one end of the sling rope is fixedly connected to the sling hook.

[0013] Preferably, the rotating mechanism comprises a rotating motor and a driving gear, the rotating motor is fixedly connected to the top of the rotating frame, the driving end of the rotating motor is fixedly connected to the driving gear, and the driving gear is meshingly connected to the transmission gear.

[0014] (III) Beneficial effects

[0015] The utility model provides a cantilever crane, which has the following beneficial effects:

[0016] (1) This type of cantilever crane is equipped with a fixed sleeve, a rotating shaft, a rotating disk and steel balls. When using the cantilever crane, the staff starts the lifting motor, and the lifting motor drives the winding drum to rotate clockwise, and the lifting rope on the winding drum will be released, so that the hook is lifted to a suitable height, and then the hook is hooked on the goods, and the lifting motor drives the winding drum to rotate counterclockwise, and the lifting rope is wound on the winding drum, so that the goods are lifted, and then the moving motor is started, and the moving motor drives the pulley to rotate, and the lifting frame can move left and right. At the same time, the rotating motor can also be started, and the rotating motor drives the driving gear to rotate, and the rotating shaft will rotate through the rotating disk due to the driving gear and the transmission gear, so that the goods are lifted to the placement position, and when the rotating shaft needs maintenance, the staff only needs to remove the fixed sleeve from the support rod to display the rotating component. Because the rotating component is composed of a rotating disk and steel balls, the structure itself is relatively simple, and the staff only needs to replace and maintain the steel balls, making the structure of the rotating component simpler. When maintenance is required, it is easy to disassemble and maintain, thereby reducing the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of the cantilever body of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the lifting motor of the utility model;

[0020] Figure 4 It is a cross-sectional view of the rotating shaft of the utility model.

[0021] In the figure: 1. mounting base; 2. mounting opening; 3. support rod; 4. transmission gear; 5. fixing sleeve; 6. rotating shaft; 601. rotating disk; 602. steel ball; 7. cantilever body; 8. adjusting slot; 9. lifting frame; 10. pulley; 11. moving motor; 12. lifting motor; 13. winding drum; 14. lifting rope; 15. hook; 16. rotating frame; 17. rotating motor; 18. driving gear. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a cantilever crane, comprising a support rod 3, a mounting assembly is fixed at the bottom of the support rod 3, a transmission gear 4 is fixedly connected to the outside of the support rod 3, a fixing sleeve 5 is threadedly connected to the top of the support rod 3, a rotating shaft 6 is movably connected to the top of the fixing sleeve 5, a rotating disk 6 is fixedly connected to the bottom end of the rotating shaft 6, and steel balls 602 are respectively embedded and movably connected to the outside of the rotating disk 601, a cantilever body 7 is fixedly connected to the outside of the rotating shaft 6, a rotating frame 16 is fixedly connected to the bottom of the cantilever body 7, a rotating mechanism is fixedly connected to the top of the rotating frame 16, and an adjusting groove 8 is respectively provided on the front and back of the cantilever body 7, a lifting frame 9 is movably connected to the outside of the cantilever body 7 through the adjusting groove 8, a moving assembly is fixedly connected to the front of the lifting frame 9, and a lifting mechanism is fixedly connected to the bottom of the lifting frame 9.

[0024] In this embodiment, specifically, the mounting assembly includes a mounting seat 1 and a mounting opening 2. The mounting seat 1 is fixedly connected to the bottom of the support rod 3, and the top of the mounting seat 1 is provided with a mounting opening 2. By inserting a bolt into the mounting opening 2 of the mounting seat 1 and tightening the bolt, the mounting seat 1 can be firmly fixed to the mounting position.

[0025] In this embodiment, specifically, the moving component includes a pulley 10 and a moving motor 11. The moving motor 11 is fixedly connected to the front side of the lifting frame 9. The pulley 10 is movably connected to the inner side of the lifting frame 9. Four pulleys 10 are provided, and one of the pulleys 10 is fixedly connected to the moving motor 11. By starting the moving motor 11, the moving motor 11 drives the pulley 10 to rotate, and the lifting frame 9 can be moved.

[0026] In the present embodiment, specifically, the lifting mechanism includes a lifting motor 12 and a winding drum 13. The lifting motor 12 is fixedly connected to the bottom of the lifting frame 9. The driving end of the lifting motor 12 is fixedly connected to the winding drum 13. The outer side of the winding drum 13 is movably connected to the sling assembly. By starting the lifting motor 12, the lifting motor 12 drives the winding drum 13 to rotate clockwise, and the lifting rope 14 on the winding drum 13 will be released, thereby raising and lowering the hook 15 to a suitable height, and then the hook 15 is hung on the goods, and the lifting motor 12 drives the winding drum 13 to rotate counterclockwise, and the lifting rope 14 is wound on the winding drum 13, thereby lifting the goods.

[0027] In this embodiment, specifically, the sling assembly includes a sling rope 14 and a hook 15. The sling rope 14 is movably connected to the outside of the winding drum 13, and one end of the sling rope 14 is fixedly connected to the hook 15. The sling rope 14 and the hook 15 can better fix the cargo, so that the equipment can lift the cargo normally.

[0028] In this embodiment, specifically, the rotating mechanism includes a rotating motor 17 and a driving gear 18. The rotating motor 17 is fixedly connected to the top of the rotating frame 16. The driving end of the rotating motor 17 is fixedly connected to the driving gear 18. The driving gear 18 is meshed with the transmission gear 4. By starting the rotating motor 17, the rotating motor 17 drives the driving gear 18 to rotate, and the driving gear 18 drives the rotating shaft 6 to rotate through the transmission gear 4.

[0029] Working principle: After the utility model is installed, first check the installation and safety protection of the utility model. When using the cantilever crane, the staff starts the lifting motor 12, the lifting motor 12 drives the winding drum 13 to rotate clockwise, and the lifting rope 14 on the winding drum 13 will be released, so that the hook 15 is lifted to a suitable height, and then the hook 15 is hung on the goods, and the lifting motor 12 drives the winding drum 13 to rotate counterclockwise, and the lifting rope 14 is wound on the winding drum 13, so that the goods are lifted, and then the moving motor 11 is started, and the moving motor 11 drives the pulley 10 to rotate, and the lifting frame 9 can move left and right, and at the same time The rotating motor 17 can be started, and the rotating motor 17 drives the driving gear 18 to rotate, and the rotating shaft 6 will rotate through the rotating disk 601 due to the driving gear 18 and the transmission gear 4, so that the goods are lifted to the placement position, and when the rotating shaft 6 needs maintenance, the staff only needs to remove the fixing sleeve 5 from the support rod 3 to display the rotating component. Because the rotating component is composed of the rotating disk 601 and the steel ball 602, the structure itself is relatively simple. The staff only needs to replace and maintain the steel ball 602, and the use process of the utility model is completed. The utility model has a simple structure and is safe and convenient to use.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A cantilever crane, comprising a support rod (3), characterized in that: The bottom of the support rod (3) is fixed with a mounting assembly, the outer side of the support rod (3) is fixedly connected with a transmission gear (4), the top of the support rod (3) is threadedly connected with a fixing sleeve (5), the top of the fixing sleeve (5) passes through a rotating shaft (6) movably connected, the bottom of the rotating shaft (6) is fixedly connected with a rotating disk (601), the outer side of the rotating disk (601) is respectively embedded with steel balls (602) movably connected, the outer side of the rotating shaft (6) is fixedly connected with a cantilever body (7), the bottom of the cantilever body (7) is fixedly connected with a rotating frame (16), the top of the rotating frame (16) is fixedly connected with a rotating mechanism, the front and back sides of the cantilever body (7) are respectively provided with adjustment slots (8), the outer side of the cantilever body (7) is movably connected with a lifting frame (9) through the adjustment slot (8), the front side of the lifting frame (9) is fixedly connected with a moving assembly, and the bottom of the lifting frame (9) is fixedly connected with a lifting mechanism.

2. A cantilever crane according to claim 1, characterized in that: The mounting assembly comprises a mounting seat (1) and a mounting opening (2); the mounting seat (1) is fixedly connected to the bottom of the support rod (3); and the top of the mounting seat (1) is provided with the mounting opening (2).

3. A cantilever crane according to claim 1, characterized in that: The moving assembly comprises a pulley (10) and a moving motor (11), wherein the moving motor (11) is fixedly connected to the front side of the lifting frame (9), and the pulley (10) is movably connected to the inner side of the lifting frame (9). Four pulleys (10) are provided, and one of the pulleys (10) is fixedly connected to the moving motor (11).

4. A cantilever crane according to claim 1, characterized in that: The lifting mechanism comprises a lifting motor (12) and a winding drum (13); the lifting motor (12) is fixedly connected to the bottom of the lifting frame (9); the driving end of the lifting motor (12) is fixedly connected to the winding drum (13); and the outer side of the winding drum (13) is movably connected to a lifting device assembly.

5. A cantilever crane according to claim 4, characterized in that: The sling assembly comprises a sling rope (14) and a sling hook (15); the sling rope (14) is movably connected to the outside of the winding drum (13); one end of the sling rope (14) is fixedly connected to the sling hook (15).

6. A cantilever crane according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor (17) and a driving gear (18); the rotating motor (17) is fixedly connected to the top of the rotating frame (16); the driving end of the rotating motor (17) is fixedly connected to the driving gear (18); and the driving gear (18) is meshedly connected to the transmission gear (4).

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