Tower crane linear arrangement speed reducer convenient to maintain

Abstract

The utility model discloses a tower crane linear arrangement speed reducer convenient to maintain, and aims to solve the problems that when a speed reducer in the prior art needs to be maintained or replaced, a winding drum and the speed reducer must be integrally removed from a bracket; when the oil seal at the output end is damaged, the speed reducer needs to be completely disassembled, that is, all internal parts are sequentially disassembled from left to right, and then the oil seal can be replaced; rigid connection is carried out through a spline or a flat key, and the connection mode has high requirements for the machining precision of parts; and the lubricating space of the speed reducer is small, and only 1-2 liters of lubricating oil can be contained generally. Comprising a speed reducer body, an input shaft and an output shaft, the input shaft is arranged at the input end of the speed reducer body, the output shaft is arranged at the output end of the speed reducer body, the input shaft is connected with a motor through a transmission coupler, and the output shaft is detachably connected with a winding drum through a connecting kit.

Description

Technical Field

[0001] The utility model belongs to the technical field of tower cranes, and in particular relates to a tower crane linear layout reducer which is easy to maintain. Background Art

[0002] Tower cranes are a type of lifting equipment widely used in construction, cargo loading and unloading, and other applications. They offer high lifting heights and a wide working range, enabling efficient vertical and horizontal transportation of construction materials and other heavy objects. Tower cranes use an electric motor to drive a winch to lift loads, and a luffing mechanism to adjust the boom angle and operating radius. Furthermore, a slewing mechanism allows the boom to rotate to the desired position, providing full coverage of the working area.

[0003] In the prior art, during the operation of a tower crane, the high-speed rotation of the motor is converted into low-speed, high-torque power output through a reducer, thereby driving the drum to achieve smooth lifting and lowering of heavy objects.

[0004] The existing technology has the following technical problems:

[0005] 1. When existing reducers need to be repaired or replaced, the drum and reducer must be removed from the bracket. This is particularly difficult on equipment such as tower cranes, where space is often limited and lifting conditions are restricted. This increases repair time and costs and reduces work efficiency.

[0006] 2. When the oil seal at the output end is damaged, the reducer needs to be completely disassembled, that is, all internal parts must be removed from left to right in order to replace the oil seal. This is not only time-consuming and labor-intensive, but may also cause potential damage to other intact parts, increasing maintenance costs.

[0007] 3. Existing reducer connections rely on rigid splines or keys, which place high demands on component machining accuracy. Inadequate machining accuracy can lead to unstable connections, potentially causing vibration, noise, and even premature wear. Furthermore, this connection method is difficult to install and disassemble.

[0008] 4. Existing reducers have a small lubrication space, typically only holding 1 to 2 liters of lubricating oil. This small amount of lubricating oil cannot effectively remove the heat generated during operation, causing the reducer to heat up and shorten its service life. Utility Model Content

[0009] In view of the technical problems that the reducer in the above-mentioned prior art needs to be repaired or replaced, the drum and the reducer must be removed from the bracket as a whole; when the oil seal at the output end is damaged, the reducer needs to be completely disassembled, that is, all internal parts need to be removed from left to right in sequence before the oil seal can be replaced; the connection method is a rigid connection through splines or flat keys, and this connection method has very high requirements on the processing accuracy of parts; the lubrication space of the reducer is small and can usually only accommodate 1 to 2 liters of lubricating oil. The present utility model provides a tower crane I-type layout reducer that is easy to maintain.

[0010] The technical solutions adopted in this utility model are as follows:

[0011] A tower crane I-shaped layout reducer that is easy to maintain, comprising: a reducer body, an input shaft and an output shaft, wherein the input end of the reducer body is provided with the input shaft, the output end of the reducer body is provided with the output shaft, the input shaft is connected to the motor through a transmission coupling, and the output shaft is detachably connected to the drum through a connection kit.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects: The detachable connection design allows the reducer to be easily separated from the drum, thereby simplifying maintenance. This reduces disassembly and assembly time, improves maintenance efficiency, and reduces downtime. The simple structure and ease of operation reduce errors caused by complex disassembly and assembly processes.

[0013] Furthermore, the above-mentioned connection kit includes: a drum-type gear coupling and a spherical arc support seat, one end of the drum-type gear coupling is connected to the output shaft, and the outer surface of the other end of the drum-type gear coupling is connected to the reel through the spherical arc support seat, and the drum-type gear coupling and the spherical arc support seat are detachably connected by connecting bolts.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: The drum-shaped gear coupling and spherical arc-shaped support seat design provide better axial and radial support, enhancing system stability. This reduces the vibration and wear of individual components, extending their service life. The use of connecting bolts makes disassembly easier and faster.

[0015] Furthermore, the above also includes a first oil seal and a second oil seal. The reducer body includes an input shaft and a connecting bearing. The first oil seal is sleeved on the input shaft of the reducer, and the second oil seal is arranged on the side of the connecting bearing located outside the reducer body.

[0016] By adopting the above technical solution, the present invention achieves the following beneficial effects: The first and second oil seals effectively prevent lubricating oil leakage, maintaining internal cleanliness. They also prevent external dust and impurities from entering the reducer, reducing wear and malfunction. Effective sealing reduces wear on internal components and extends the overall service life of the reducer.

[0017] Furthermore, the above-mentioned connecting bearing is a deep groove ball bearing.

[0018] By adopting the above technical solution, the present invention achieves the following beneficial effects: It utilizes deep groove ball bearings, which offer high load capacity and low frictional resistance. Due to the low friction, heat generation during operation is reduced, helping to maintain a stable operating temperature for the reducer. This makes it suitable for high-speed applications and ensures reliable performance of the reducer under high-speed operation.

[0019] Furthermore, the number of the above-mentioned connecting bearings is two.

[0020] By adopting the above technical solution, the present invention achieves the following beneficial effects: The dual-bearing design significantly improves overall load-bearing capacity, sharing the load of a single bearing. The two bearings work together to reduce shaft swing and vibration, improving system stability. This ensures precise positioning of the output shaft, reduces offset and wear, and enhances sealing effectiveness.

[0021] Furthermore, the transmission coupling described above is a plum blossom-shaped elastic coupling.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects: the plum blossom-shaped elastic coupling can absorb vibration and shock, providing excellent cushioning. It also allows for a certain degree of eccentricity and angular deviation, facilitating installation and adjustment. In the event of an overload, the elastic element can provide a degree of protection, preventing direct damage to other components.

[0023] Furthermore, the above-mentioned reducer body also includes an oil storage tank.

[0024] By adopting the above technical solution, the present invention has the following beneficial effects: the oil reservoir provides ample storage space for lubricating oil, ensuring adequate lubrication within the reducer. The larger oil storage capacity extends the lubricating oil replacement cycle, reducing maintenance costs. The ample lubricating oil helps to effectively dissipate heat generated during operation, maintaining a suitable operating temperature.

[0025] Furthermore, the capacity of the above-mentioned oil storage tank is 6 to 7L.

[0026] By adopting the above technical solution, the present invention has the following beneficial effects: Compared with traditional reducers, the larger lubricating oil capacity (6-7L) significantly improves lubrication. More lubricating oil dissipates heat more effectively, reduces thermal stress, and extends the service life of the reducer. The large-capacity lubricating oil tank reduces the need for frequent refilling, reducing maintenance frequency and costs.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. This utility model utilizes a detachable connection design, allowing the reducer to be easily separated from the drum, simplifying maintenance. This reduces disassembly and assembly time, improves maintenance efficiency, and reduces downtime. The simple structure and ease of operation reduce errors caused by complex disassembly and assembly processes.

[0029] 2. This utility model provides better axial and radial support through the design of a drum-type gear coupling and a spherical arc support seat, enhancing system stability. This reduces the swing and wear of individual components, extending service life. The use of connecting bolts makes disassembly easier and faster.

[0030] 3. This utility model effectively prevents lubricating oil leakage through the first and second oil seals, keeping the interior clean. It also prevents external dust and impurities from entering the reducer, reducing wear and malfunction. Through effective sealing, wear of internal parts is reduced, extending the overall service life of the reducer.

[0031] 4. This utility model uses deep groove ball bearings, which have high load capacity and low friction resistance. Due to the low friction, less heat is generated during operation, which helps maintain a stable operating temperature of the reducer. It is suitable for high-speed applications and ensures the reliable performance of the reducer under high-speed operation.

[0032] 5. The dual-bearing design of this utility model significantly improves the overall load-bearing capacity, sharing the load of a single bearing. The two bearings work together to reduce shaft swing and vibration, improving system stability. This ensures precise positioning of the output shaft, reduces offset and wear, and improves sealing effectiveness.

[0033] 6. This new plum blossom-shaped elastic coupling absorbs vibration and shock, providing excellent cushioning. A certain degree of eccentricity and angular deviation is tolerated, facilitating installation and adjustment. In overload situations, the elastic element provides protection, preventing direct damage to other components.

[0034] 7. The oil tank of this utility model provides ample storage space for lubricating oil, ensuring that the reducer interior is fully lubricated. The larger oil storage capacity can extend the lubricating oil replacement cycle and reduce maintenance costs. Adequate lubricating oil helps to better dissipate the heat generated during operation and maintain a suitable operating temperature.

[0035] 8. Compared to traditional reducers, the larger lubricant capacity (6-7L) significantly improves lubrication. More lubricant dissipates heat more effectively, reduces thermal stress, and extends the reducer's service life. The large-capacity lubricant tank reduces the need for frequent refills, reducing maintenance frequency and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort, among which:

[0037] Figure 1 This is a schematic structural diagram of a tower crane linear layout speed reducer that is easy to maintain according to an embodiment of the utility model;

[0038] Figure 2 This is a front view of a tower crane linear layout reducer that is easy to maintain according to an embodiment of the utility model;

[0039] Figure 3 It is a cross-sectional schematic diagram of a tower crane linear layout reducer that is easy to maintain, provided according to an embodiment of the utility model.

[0040] Reference numerals: 1. reducer body; 101. oil storage tank; 102. drum-type gear coupling; 103. reducer support seat; 104. plum blossom-shaped elastic coupling; 105. first oil seal; 106. second oil seal; 107. deep groove ball bearing; 108. fixing bolt. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0042] 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 represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0043] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0044] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0045] like Figure 1 As shown, an embodiment of the utility model provides a tower crane I-type layout reducer that is easy to maintain, comprising: a reducer body 1, an input shaft and an output shaft, the input end of the reducer body 1 is provided with the input shaft, the output end of the reducer body 1 is provided with the output shaft, the input shaft is connected to the motor through a transmission coupling, and the output shaft is detachably connected to the drum through a connecting kit.

[0046] The utility model utilizes a detachable connection design, allowing the reducer to be easily separated from the drum, simplifying maintenance. This reduces assembly and disassembly time, improves maintenance efficiency, and reduces downtime. The simple structure and ease of operation reduce errors caused by complex assembly and disassembly processes.

[0047] In this embodiment, the reducer support base 103 and the reducer are fixed by fixing bolts 108 .

[0048] Optionally, the connection kit includes: a drum-type gear coupling 102 and a spherical arc support seat, one end of the drum-type gear coupling 102 is connected to the output shaft, and the outer surface of the other end of the drum-type gear coupling 102 is connected to the reel through the spherical arc support seat, and the drum-type gear coupling 102 and the spherical arc support seat are detachably connected by connecting bolts.

[0049] The present invention provides improved axial and radial support through the design of the drum-shaped gear coupling 102 and the spherical arc-shaped support seat, enhancing system stability. This reduces the swing and wear of individual components, extending their service life. The use of connecting bolts makes disassembly easier and faster.

[0050] Optionally, it also includes a first oil seal 105 and a second oil seal 106. The reducer body 1 includes an input shaft and a connecting bearing. The first oil seal 105 is sleeved on the input shaft of the reducer, and the second oil seal 106 is arranged on the side of the connecting bearing located outside the reducer body 1.

[0051] In this embodiment, the input shaft is located at the input end of the reducer body 1, and the connecting bearing is located at the output end of the reducer body 1. The first oil seal 105 is used to prevent the input shaft from dust and oil leakage, and the connecting bearing is used to assist the rotation of the reducer outer shell. The second oil seal 106 is used to prevent the connecting bearing from dust and oil leakage.

[0052] The first and second oil seals 105 and 106 of the present invention effectively prevent lubricating oil leakage, maintaining internal cleanliness. They also prevent external dust and impurities from entering the reducer, reducing wear and malfunction. Effective sealing reduces wear on internal components and extends the overall service life of the reducer.

[0053] Optionally, the connecting bearing is a deep groove ball bearing 107 .

[0054] The present invention utilizes deep groove ball bearings 107, which offer high load capacity and low friction. This low friction reduces heat generation during operation, helping to maintain a stable operating temperature for the reducer. This makes it suitable for high-speed applications and ensures reliable performance at high speeds.

[0055] Optionally, the number of the connecting bearings is two.

[0056] The dual-bearing design of this utility model significantly improves overall load-bearing capacity, sharing the load of a single bearing. The two bearings work together to reduce shaft swing and vibration, improving system stability. This ensures precise positioning of the output shaft, reduces offset and wear, and enhances sealing effectiveness.

[0057] Optionally, the transmission coupling is a plum blossom-shaped elastic coupling 104 .

[0058] The plum blossom-shaped elastic coupling 104 of the present invention absorbs vibration and shock, providing a good cushioning effect. It allows for a certain degree of eccentricity and angular deviation, facilitating installation and adjustment. In the event of an overload, the elastic element provides a protective shield, preventing direct damage to other components.

[0059] Optionally, the reducer body 1 further includes an oil storage tank 101 .

[0060] The oil reservoir 101 of the present invention provides ample storage space for lubricating oil, ensuring adequate lubrication within the reducer. This larger oil storage capacity extends the lubricating oil replacement cycle and reduces maintenance costs. Sufficient lubricating oil helps dissipate heat generated during operation, maintaining a suitable operating temperature.

[0061] Optionally, the capacity of the oil storage tank 101 is 6 to 7L.

[0062] Compared to traditional reducers, the larger lubricant capacity (6-7L) significantly improves lubrication. More lubricant dissipates heat more effectively, reduces thermal stress, and extends the reducer's service life. The large-capacity lubricant tank reduces the need for frequent refills, lowering maintenance frequency and costs.

[0063] The tower crane linear reducer provided in this embodiment is primarily used in heavy machinery such as tower cranes. Tower cranes are widely used in construction sites, ports, docks, shipyards, and other locations, frequently requiring heavy lifting and handling. Due to their harsh operating environments and often long operating times, these reducers place high demands on reliability, ease of maintenance, and longevity.

[0064] How it works

[0065] 1. Input

[0066] Input shaft: connected to the motor through a transmission coupling (plum blossom-shaped elastic coupling 104). The motor provides power, which is transmitted to the input shaft through the transmission coupling.

[0067] The first oil seal 105 is sleeved on the input shaft to prevent dust from entering and lubricating oil from leaking, keeping the interior clean.

[0068] 2. Reducer body 1

[0069] Gear Set: The input shaft transmits power to the output shaft through a series of gear sets. The gear set is designed to achieve the desired reduction ratio, thereby reducing the speed of the output shaft and increasing the torque.

[0070] Oil storage tank 101: The reducer body 1 is provided with an oil storage tank 101 with a capacity of 6 to 7 L, which ensures that there is enough lubricating oil to lubricate the internal gears and bearings, while taking away heat and maintaining a suitable operating temperature.

[0071] 3. Output

[0072] Output shaft: detachably connected to the drum via a connecting kit.

[0073] Drum gear coupling 102: One end is connected to the output shaft, and the other end is connected to the drum via a spherical arc support seat. Drum gear coupling 102 provides better axial and radial support, enhancing system stability.

[0074] Spherical arc support seat: connected to the reel, detachable connection is achieved through connecting bolts for easy maintenance.

[0075] The second oil seal 106 is provided on the side of the connecting bearing outside the reducer body 1 to prevent dust from entering and lubricating oil from leaking, thereby protecting the connecting bearing.

[0076] Connecting bearings: Two deep groove ball bearings 107 are used to share the load, improve the carrying capacity, reduce swing and vibration, and improve the stability of the system.

[0077] Working process

[0078] Power input:

[0079] After the motor is started, the power is transmitted to the input shaft of the reducer through the plum blossom-shaped elastic coupling 104 .

[0080] The first oil seal 105 prevents dust from entering and lubricating oil from leaking.

[0081] Deceleration and transmission:

[0082] The input shaft transmits power to the output shaft through the gear set, achieving speed reduction and torque increase.

[0083] The lubricating oil in the oil storage tank 101 lubricates the gears and bearings and takes away the heat generated during the working process.

[0084] Power output:

[0085] The output shaft is connected to the reel through a drum-type gear coupling 102 and a spherical arc-shaped support seat.

[0086] The second oil seal 106 prevents dust from entering and lubricating oil from leaking, thereby protecting the connecting bearing.

[0087] Deep groove ball bearings 107 provide stable support, reducing vibration and wear.

[0088] Maintenance and repair:

[0089] When maintenance or parts replacement is required, the reducer and reel can be easily separated by removing the connecting bolts, simplifying the maintenance process.

[0090] The design of the drum-type gear coupling 102 and the spherical arc-shaped support seat makes disassembly and assembly more convenient.

[0091] When replacing the oil seal, it is only necessary to remove the fixing bolts 108 and take off the reducer support seat 103 without completely disassembling the reducer.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tower crane linear layout reducer that is easy to maintain, characterized in that: include: A reducer body, an input shaft and an output shaft, wherein the input end of the reducer body is provided with the input shaft, the output end of the reducer body is provided with the output shaft, the input shaft is connected to the motor through a transmission coupling, and the output shaft is detachably connected to the reel through a connection kit.

2. The tower crane linear layout speed reducer that is easy to maintain according to claim 1 is characterized in that: The connection kit includes: a drum-type gear coupling and a spherical arc support seat, one end of the drum-type gear coupling is connected to the output shaft, and the outer surface of the other end of the drum-type gear coupling is connected to the reel through the spherical arc support seat, and the drum-type gear coupling and the spherical arc support seat are detachably connected by connecting bolts.

3. The tower crane linear layout speed reducer that is easy to maintain according to claim 1 is characterized in that: It also includes a first oil seal and a second oil seal. The reducer body includes an input shaft and a connecting bearing. The first oil seal is sleeved on the input shaft of the reducer, and the second oil seal is arranged on a side of the connecting bearing located outside the reducer body.

4. The tower crane linear layout speed reducer easy to maintain according to claim 3 is characterized in that: The connecting bearing is a deep groove ball bearing.

5. The tower crane linear layout speed reducer that is easy to maintain according to claim 3 is characterized in that: The number of the connecting bearings is two.

6. The tower crane linear layout speed reducer that is easy to maintain according to claim 1 is characterized in that: The transmission coupling is a plum blossom-shaped elastic coupling.

7. The tower crane linear layout speed reducer that is easy to maintain according to claim 1 is characterized in that: The reducer body further includes an oil storage tank.

8. The tower crane linear layout speed reducer easy to maintain according to claim 7, characterized in that: The capacity of the oil storage tank is 6 to 7L.

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