A stationary jib crane

Abstract

The utility model is suitable for the technical field of cantilever crane, provides a fixed cantilerer crane, include: having support column and connecting column's installation column, rotary installation on the connecting column's crosspiece, be provided with on the crosspiece for hoisting the hoisting mechanism of article is hoisted, set up on the crosspiece and the connecting column, for driving the rotation mechanism of the article hoisted on the crosspiece, assemble on the crosspiece for the lubricating mechanism of lubricating the gear wheel set up on the rotation mechanism. The fixed cantilever crane provided by the scheme can monitor the load force received by the hoisted goods, thereby ensuring that the hoisted goods are within the safe bearing range, improving the safety during hoisting work, and the gear wheel can be lubricated regularly, effectively reducing the friction during use of the gear wheel, thereby reducing the resistance during overall operation, and significantly improving the flexibility of the fixed cantilever crane during use.

Description

Technical Field

[0001] This utility model belongs to the field of cantilever crane technology, and particularly relates to a fixed cantilever crane. Background Technology

[0002] A cantilever crane is an industrial component, belonging to the category of light-duty cranes. It consists of a column, a slewing arm, a slewing drive device, and an electric hoist. It is characterized by its light weight, large span, large lifting capacity, economy, and durability.

[0003] However, due to its inherent structure, the lifting weight of a fixed cantilever crane cannot be too large. In actual use, workers rely entirely on their experience to judge whether there is overload, which poses a safety hazard. Furthermore, when the fixed cantilever rotates the lifted item, it uses gears to transmit power during the transmission process. Because the fixed cantilever is relatively high, workers often neglect to lubricate the gears, resulting in greater friction and increased resistance during operation, thus reducing the overall flexibility during use. Utility Model Content

[0004] This invention provides a fixed cantilever crane, which aims to solve the problem of low safety in the use of currently used fixed cantilever cranes as mentioned in the background art.

[0005] To solve the above problems, this utility model is implemented as follows: a fixed cantilever crane includes: a mounting column having a support column and a connecting column; a crossbeam rotatably mounted on the connecting column, wherein a lifting mechanism for lifting items is provided on the crossbeam; a rotating mechanism provided on the crossbeam and the connecting column for driving the items lifted on the crossbeam to rotate; and a lubrication mechanism assembled on the crossbeam for lubricating the circular gear provided on the rotating mechanism.

[0006] Preferably, the rotating mechanism includes: a first servo motor fixedly mounted on the crossbeam; a mounting shaft rotatably mounted on the crossbeam, wherein the spur gear is fixedly sleeved on both the mounting shaft and the output shaft of the first servo motor, and the two spur gears mesh with each other; a friction block fixedly mounted on the bottom of the mounting shaft; and a friction ring fixedly sleeved on the connecting column, wherein the friction ring is in contact with the friction block.

[0007] Preferably, the lubrication mechanism includes: a storage box containing lubricating oil, which is fixedly installed on the cross frame; a feeding pump is fixedly installed on the storage box, and the feed end of the feeding pump extends into the storage box; and a connecting pipe connected to the discharge end of the feeding pump, which is used to add lubricating oil to the spur gear.

[0008] Preferably, the lifting mechanism includes: a mounting shell disposed on the crossbeam, wherein a second servo motor is fixedly installed inside the mounting shell; and a winch fixedly sleeved on the output shaft of the second servo motor, wherein a rope for lifting goods is wound on the winch.

[0009] Preferably, the crossbeam is provided with a moving mechanism for driving the lifting mechanism to move laterally. The moving mechanism includes: a third servo motor fixedly installed on the crossbeam; a lead screw rotatably installed on the crossbeam, one end of the lead screw being fixedly connected to the output shaft of the third servo motor, and a mounting block being threaded onto the lead screw, the mounting block being fixedly connected to the mounting shell.

[0010] Preferably, a telescopic rod is fixedly installed inside the support column, the output shaft of the telescopic rod is fixedly connected to the bottom of the connecting column, and a sliding rod is fixedly installed on the connecting column, the sliding rod being slidably connected to the support column.

[0011] Preferably, connecting plates are fixedly installed on the front and rear outer walls of the cross frame, and storage plates are fixedly installed on the front and rear outer walls of the mounting shell. Rollers are rotatably installed on the storage plates, and the rollers are in contact with the connecting plates.

[0012] Preferably, the placement box is provided with a transparent viewing port for viewing the inside of the placement box, and a reference scale is provided on one side of the transparent viewing port.

[0013] Compared with related technologies, the fixed cantilever crane provided by this utility model has the following advantages:

[0014] Compared with existing technologies, the fixed cantilever crane provided by this solution can monitor the load force on the lifted goods, thereby ensuring that the lifted items are within a safe load-bearing range and improving the safety of lifting operations. At the same time, it can perform timed lubrication on the power transmission gears, effectively reducing the friction of the gears during use, thereby reducing the overall running resistance and significantly improving the flexibility of the fixed cantilever crane during use. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of a fixed cantilever crane provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0018] Figure 4 for Figure 2An enlarged structural diagram of part B shown in the figure;

[0019] Figure 5 for Figure 2 The diagram shows an enlarged view of section C.

[0020] Reference numerals: 1. Mounting column; 101. Support column; 102. Connecting column; 2. Crossbeam; 3. First servo motor; 4. Mounting shaft; 5. Circular gear; 6. Friction block; 7. Friction ring; 8. Placement box; 9. Feeding pump; 10. Connecting pipe; 11. Mounting shell; 12. Second servo motor; 13. Winch; 14. Pull rope; 15. Third servo motor; 16. Lead screw; 17. Mounting block; 18. Telescopic rod; 19. Slide rod; 20. Connecting plate; 21. Roller; 22. Displacement sensor; 23. Gravity sensor. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing 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, and therefore should not be construed as a limitation of the present invention.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This utility model embodiment provides a fixed cantilever crane, such as Figure 1-5As shown, the fixed cantilever crane includes: a mounting column 1 having a support column 101 and a connecting column 102; a crossbeam 2 rotatably mounted on the connecting column 102; a lifting mechanism for lifting items on the crossbeam 2; a rotating mechanism mounted on the crossbeam 2 and the connecting column 102 for rotating the items lifted on the crossbeam 2; and a lubrication mechanism mounted on the crossbeam 2 for lubricating the spur gear 5 mounted on the rotating mechanism.

[0024] In this embodiment, during overall use, the support column 101 is fixedly installed at the corresponding usage position. Firstly, a controller (model OMRON E5CC-QX2ASM-800) is installed on one side of the device. This controller allows for the control of the device. The lifting mechanism is equipped with a gravity sensor 23 (model Z6FD1) and a displacement sensor 22 (model MTSRHM0150MD601S1). When the lifting mechanism lifts an item, the gravity sensor 23 accurately monitors the weight of the goods to ensure that the lifted item is not overloaded, thus ensuring that the lifted item is within a safe load-bearing range. Simultaneously, the displacement sensor 22 monitors the vertical distance of the lifted goods. Under the action of the gravity sensor 23, the load on the item at different lifting positions can be monitored, ensuring safe load-bearing capacity at different suspension positions and improving the safety of the lifting process. Simultaneously, the rotating mechanism can drive the hoisted items on the crossbeam 2 to rotate, thereby cooperating with the hoisting mechanism to lift the items to different positions. During the entire operation of the equipment, the lubrication mechanism can lubricate the sprocket 5 at regular intervals, effectively reducing the friction of the sprocket 5 during use, thereby reducing the overall operating resistance and significantly improving the flexibility of the fixed cantilever crane during use. Through this device, the load force on the hoisted goods can be monitored, thereby ensuring that the hoisted items are within a safe load-bearing range and improving the safety of hoisting operations. At the same time, the power transmission sprocket 5 can be lubricated at regular intervals, effectively reducing the friction of the sprocket 5 during use, thereby reducing the overall operating resistance and significantly improving the flexibility of the fixed cantilever crane during use.

[0025] In a further preferred embodiment of this utility model, the rotating mechanism includes: a first servo motor 3 fixedly mounted on the crossbeam 2; a mounting shaft 4 rotatably mounted on the crossbeam 2, wherein the spur gear 5 is fixedly sleeved on both the mounting shaft 4 and the output shaft of the first servo motor 3, and the two spur gears 5 mesh with each other; a friction block 6 fixedly mounted on the bottom of the mounting shaft 4; and a friction ring 7 fixedly sleeved on the connecting column 102, wherein the friction ring 7 is in contact with the friction block 6.

[0026] In this embodiment, when using the rotating mechanism, the first servo motor 3 is started by the controller. The output shaft of the first servo motor 3 rotates, and the mounting shaft 4 is driven to rotate through the two meshing spur gears 5. The friction block 6 at the bottom of the mounting shaft 4 rotates accordingly, and generates relative frictional motion with the friction ring 7 fixedly sleeved on the connecting column 102. Thus, the cross frame 2 is driven to rotate around the connecting column 102 by relying on frictional force, thereby realizing the rotation operation of lifting the item.

[0027] In a further preferred embodiment of the present invention, the lubrication mechanism includes: a storage box 8 fixedly installed on the cross frame 2 and containing lubricating oil, a feeding pump 9 fixedly installed on the storage box 8, the feeding end of the feeding pump 9 extending into the storage box 8; and a connecting pipe 10 connected to the discharge end of the feeding pump 9, the connecting pipe 10 being used to add lubricating oil to the spur gear 5.

[0028] In this embodiment, during actual use, when it is necessary to lubricate the spur gear 5 in the rotating mechanism, the operator starts the feeding pump 9 through the controller. The feeding pump 9 draws lubricating oil from the placement box 8 and delivers the lubricating oil to the meshing part of the spur gear 5 through the connecting pipe 10, thereby completing the lubrication operation of the spur gear 5, reducing the wear on the surface of the spur gear 5, extending the service life of the spur gear 5, and thus improving the reliability and stability of the entire rotating mechanism and even the fixed cantilever crane.

[0029] In a further preferred embodiment of the present invention, the lifting mechanism includes: a mounting shell 11 disposed on the crossbeam 2, wherein a second servo motor 12 is fixedly installed inside the mounting shell 11; and a winch 13 fixedly sleeved on the output shaft of the second servo motor 12, wherein a rope 14 for lifting goods is wound on the winch 13.

[0030] In this embodiment, when lifting an item, the controller starts the second servo motor 12, causing its output shaft to rotate in a set direction, which drives the winch 13 to rotate. During the rotation of the winch 13, the rope 14 wound on it is lowered. The operator connects the rope 14 to the goods. Then, the second servo motor 12 is controlled to rotate in the opposite direction, and the winch 13 rotates in the opposite direction to retract the rope 14, thereby lifting the goods. During the lifting process, the lifting speed and height of the goods can be precisely adjusted by controlling the speed and direction of the second servo motor 12.

[0031] In a further preferred embodiment of this utility model, the crossbeam 2 is provided with a moving mechanism for driving the lifting mechanism to move laterally. The moving mechanism includes: a third servo motor 15 fixedly installed on the crossbeam 2; a lead screw 16 rotatably installed on the crossbeam 2, one end of the lead screw 16 being fixedly connected to the output shaft of the third servo motor 15, and a mounting block 17 threadedly installed on the lead screw 16, the mounting block 17 being fixedly connected to the mounting shell 11.

[0032] In this embodiment, when using the moving mechanism, the third servo motor 15 is started by the controller. The output shaft of the third servo motor 15 drives the lead screw 16 to rotate. A limit rod is fixedly installed on the cross frame 2. The limit rod and the mounting block 17 are slidably connected. The limit rod limits the mounting block 17, thereby driving the mounting block 17 to move axially along the lead screw 16. Because the mounting block 17 is fixedly connected to the mounting shell 11, the mounting shell 11 and the lifting mechanism set in the mounting shell 11 will move laterally together with the mounting block 17, thereby realizing the adjustment of the lateral position of the lifting mechanism.

[0033] In a further preferred embodiment of the present invention, a telescopic rod 18 is fixedly installed inside the support column 101, the output shaft of the telescopic rod 18 is fixedly connected to the bottom of the connecting column 102, and a sliding rod 19 is fixedly installed on the connecting column 102, the sliding rod 19 and the support column 101 are slidably connected.

[0034] In this embodiment, when it is necessary to adjust the overall height of the crossbeam 2, the telescopic rod 18 is activated by the controller to move the connecting column 102, thereby adjusting the height of the crossbeam 2 to better meet different usage needs. During the lifting and lowering of the connecting column 102, the sliding rod 19 can prevent the connecting column 102 from shaking, tilting or shifting, ensuring the stability of the entire cantilever crane structure, ensuring the safety and reliability of the lifting operation, and reducing the risk of goods falling or equipment damage caused by equipment shaking.

[0035] In a further preferred embodiment of this utility model, connecting plates 20 are fixedly installed on the front and rear outer walls of the cross frame 2, and storage plates are fixedly installed on the front and rear outer walls of the mounting shell 11. Rollers 21 are rotatably installed on the storage plates, and the rollers 21 are in contact with the connecting plates 20.

[0036] In this embodiment, when the ceiling lifting mechanism of the moving mechanism moves, the mounting shell 11 will drive the roller 21 to rotate on the connecting plate 20, thereby improving the stability of the mounting shell 11 when it moves.

[0037] In a further preferred embodiment of the present invention, the placement box 8 is provided with a transparent observation port for viewing the inside of the placement box 8, and a reference scale is provided on one side of the transparent observation port.

[0038] In this embodiment, the amount of lubricating oil in the storage box 8 can be easily viewed through the transparent observation port, and when the oil level is low, it can be added in a timely manner.

[0039] In summary, compared with related technologies, this device can monitor the load force on the lifted goods, thereby ensuring that the lifted items are within a safe load-bearing range and improving the safety of lifting operations. At the same time, it can perform timed lubrication on the power transmission gear 5, effectively reducing the friction of the gear 5 during use, thereby reducing the overall running resistance and significantly improving the flexibility of the fixed cantilever crane during use.

[0040] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A fixed cantilever crane, characterized in that, include: Mounting column (1) having a support column (101) and a connecting column (102); Rotate the crossbeam (2) mounted on the connecting column (102), the crossbeam (2) being provided with a lifting mechanism for lifting the item; A rotating mechanism installed on the cross frame (2) and the connecting column (102) for rotating the items lifted on the cross frame (2); A lubrication mechanism mounted on the crossbeam (2) for lubricating the circular gear (5) mounted on the rotating mechanism.

2. The fixed cantilever crane as described in claim 1, characterized in that, The rotating mechanism includes: The first servo motor (3) is fixedly installed on the cross frame (2); The mounting shaft (4) is rotated and mounted on the cross frame (2). The mounting shaft (4) and the output shaft of the first servo motor (3) are both fixedly fitted with the spherical gear (5), and the two spherical gears (5) mesh with each other. Friction block (6) is fixedly installed at the bottom of the mounting shaft (4); A friction ring (7) is fixedly sleeved on the connecting column (102), and the friction ring (7) is in contact with the friction block (6).

3. The fixed cantilever crane as described in claim 1, characterized in that, The lubrication mechanism includes: A storage box (8) containing lubricating oil is fixedly installed on the cross frame (2). A feeding pump (9) is fixedly installed on the storage box (8), and the feed end of the feeding pump (9) extends into the storage box (8). A connecting pipe (10) is connected to the discharge end of the feed pump (9), the connecting pipe (10) being used to add lubricating oil to the spur gear (5).

4. The fixed cantilever crane as described in claim 1, characterized in that, The lifting mechanism includes: A mounting housing (11) is provided on the cross frame (2), and a second servo motor (12) is fixedly installed inside the mounting housing (11). A winch (13) is fixedly mounted on the output shaft of the second servo motor (12), and a rope (14) for lifting goods is wound on the winch (13).

5. The fixed cantilever crane as described in claim 4, characterized in that, The crossbeam (2) is provided with a moving mechanism for driving the lifting mechanism to move laterally, the moving mechanism comprising: A third servo motor (15) is fixedly installed on the cross frame (2); Rotate the lead screw (16) mounted on the cross frame (2). One end of the lead screw (16) is fixedly connected to the output shaft of the third servo motor (15). A mounting block (17) is threaded onto the lead screw (16). The mounting block (17) is fixedly connected to the mounting shell (11).

6. The fixed cantilever crane as described in claim 1, characterized in that, A telescopic rod (18) is fixedly installed inside the support column (101). The output shaft of the telescopic rod (18) is fixedly connected to the bottom of the connecting column (102). A sliding rod (19) is fixedly installed on the connecting column (102). The sliding rod (19) is slidably connected to the support column (101).

7. The fixed cantilever crane as described in claim 4, characterized in that, Connecting plates (20) are fixedly installed on the front and rear outer walls of the cross frame (2), and storage plates are fixedly installed on the front and rear outer walls of the mounting shell (11). Rollers (21) are rotatably installed on the storage plates, and the rollers (21) are in contact with the connecting plates (20).

8. The fixed cantilever crane as described in claim 3, characterized in that, The placement box (8) is provided with a transparent observation port for viewing the inside of the placement box (8), and a reference scale is provided on one side of the transparent observation port.

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