Walking drive device

Abstract

The application discloses a walking driving device, which comprises a box body, an input shaft, a driving mechanism and an output shaft arranged in the inner cavity of the box body, the output shaft is located at one end of the box body, a T-shaped wheel is mounted on the middle part of the output shaft, the input shaft is located at the other end of the box body and is perpendicular to the output shaft, one end of the input shaft is connected with the driving mechanism, the driving mechanism drives the output shaft to rotate, the T-shaped wheel moves along the track, the other end of the input shaft penetrates through the box body and extends to the outside of the box body, an L-shaped support is further arranged in the box body, one end of the L-shaped support is located at one side of the T-shaped wheel and supports the middle part of the output shaft. In the application, the reducer drives the output shaft to rotate through the cooperation of the input shaft, the driving mechanism and the output shaft, the transmission cooperation of the components of the driving mechanism, the load capacity of the tapered roller bearing and the radial deep groove ball bearing are utilized to eliminate and avoid the displacement and disengagement of the main shaft of the existing driving wheel and the reducer due to the shaking of the driving wheel.

Description

Technical Field

[0001] This invention relates to the field of motor testing fixture technology, and more specifically, to a walking drive device. Background Technology

[0002] Cranes, also known as overhead cranes or hoists, are mostly used in warehouses to lift goods. One of the most important components of a crane is its traveling mechanism, which mainly consists of three parts: a motor, drive wheels, and rails. The motor provides power to the drive wheels, enabling them to move along the rails and thus moving the traveling mechanism.

[0003] Currently, the drive wheel is an independent component, connected to the gearbox via a coupling, or a hollow shaft reducer is directly fitted onto the drive wheel's main shaft. Because the overhead crane or trolley will generate vibrations of varying magnitudes when moving, the relative position of the drive wheel and the gearbox will shift when using a coupling structure, resulting in frequent damage to the coupling. Furthermore, the hollow shaft reducer structure will also cause the drive wheel's main shaft to bend due to vibration and the weight of the reducer.

[0004] Therefore, a new solution is needed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a walking drive device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A walking drive device includes a housing. An input shaft, a drive mechanism, and an output shaft are disposed within the inner cavity of the housing. The output shaft is located at one end of the housing, and its two ends are rotatably connected to the two side walls of the housing. A T-shaped wheel is mounted in the middle of the output shaft. The input shaft is located at the other end of the housing and is perpendicular to the output shaft. One end of the input shaft is connected to the drive mechanism, which drives the output shaft to rotate, causing the T-shaped wheel to move along a track. The other end of the input shaft passes through the housing and extends out of the housing. An L-shaped bracket is also disposed inside the housing. One end of the L-shaped bracket is located on one side of the T-shaped wheel and provides support for the middle of the output shaft.

[0008] Furthermore, the drive mechanism includes a first intermediate shaft, a second intermediate shaft, a first spiral bevel gear, a second spiral bevel gear, a first gear, a second gear, and a third gear. The first intermediate shaft, the second intermediate shaft, and the output shaft are arranged in parallel. The second spiral bevel gear and the first gear are respectively installed at both ends of the first intermediate shaft. The first spiral bevel gear is installed at one end of the input shaft and meshes with the second spiral bevel gear. The second gear is installed on the second intermediate shaft and meshes with the first gear. The third gear is installed at one end of the output shaft and meshes with the second gear.

[0009] Furthermore, tapered roller bearings are installed at both ends of the input shaft, both ends of the first intermediate shaft, and both ends of the output shaft, and the housing is provided with a first mounting groove for installing the tapered roller bearings.

[0010] Furthermore, deep groove ball bearings are installed at both ends of the second intermediate shaft, and a second mounting groove for installing the deep groove ball bearings is provided at one end of both the housing and the L-shaped bracket.

[0011] Furthermore, the output shaft includes a shaft body and shaft ends disposed at both ends of the shaft body. The shaft body has a multi-segment gradient structure, and the diameter of the shaft body is larger than the diameter of the shaft ends.

[0012] Furthermore, the output shaft comprises a first shaft section, a second shaft section, a third shaft section, and a fourth shaft section connected in sequence. The diameters of the first shaft section, the second shaft section, the third shaft section, and the fourth shaft section gradually decrease proportionally, and a step is formed between adjacent shaft sections. The T-shaped wheel is mounted on the second shaft section, and a cylindrical roller bearing is mounted on the third shaft section. An oil seal spacer is provided between the cylindrical roller bearing and the T-shaped wheel. The oil seal spacer is mounted on the second shaft section, and its two ends respectively abut against the cylindrical roller bearing and the T-shaped wheel.

[0013] Furthermore, a cylindrical roller bearing is installed in the middle of the output shaft, and a third mounting groove for installing the cylindrical roller bearing is provided at one end of the L-shaped bracket.

[0014] Furthermore, the T-shaped wheel includes a wheel body, and the outer side of the wheel body is provided with a plurality of baffle units along its circumference. The baffle units are fan-shaped, and the plurality of baffle units are combined to form an annular baffle. When the baffle unit is subjected to an outward pushing force, it forms a disengaged state from the wheel body. When the baffle unit is not subjected to force and is subjected to an inward pulling force, it forms an abutting state against the wheel body. A sensor for obtaining changes in the state of the baffle unit is installed on the baffle unit.

[0015] Furthermore, a fourth mounting groove is provided on the outer side of the wheel body corresponding to the three end corners of the baffle unit. A damper is provided in the fourth mounting groove. One end of the damper is fixed to the bottom of the fourth mounting groove, and the other end of the damper is hinged to the baffle unit. A spring is sleeved on the damper. One end of the spring is fixed to the bottom of the fourth mounting groove, and the other end of the spring is fixed to the baffle unit.

[0016] The beneficial effects of this invention are:

[0017] 1. In this invention, the reducer drives the output shaft to rotate through the cooperation of the input shaft, the drive mechanism and the output shaft. The transmission cooperation of each component of the drive mechanism and the load capacity of the tapered roller bearing and the radial deep groove ball bearing are used to eliminate and avoid the situation where the main shaft of the existing drive wheel is displaced and disengaged from the reducer due to vibration.

[0018] 2. In this invention, by setting up an L-shaped bracket and using tapered roller bearings in conjunction with the L-shaped bracket, the output shaft is supported from multiple directions, which improves the bending resistance of the output shaft and thus effectively increases the load capacity of the overhead crane.

[0019] 3. In this invention, the output shaft adopts a multi-segment gradually decreasing structure, divided into four shaft segments, with the diameters of the four shaft segments gradually decreasing proportionally. First, the stress peak is dispersed by the smooth transition of the diameter change, avoiding stress concentration and improving the bending resistance of the output shaft. Second, the fixed frequency of the output shaft is adjusted by changing the mass of each shaft segment, reducing vibration. Third, the steps formed between adjacent shaft segments obstruct the lubricating oil, preventing lubricating oil leakage, and at the same time, the steps limit the components installed on the shaft segments.

[0020] 4. In this invention, the T-shaped wheel is divided into two parts: the wheel body and the baffle. The baffle has two dynamic states: a disengaged state and an abutting state. These two dynamic states enable the T-shaped wheel to pass over the deformation position of the track, avoiding jamming. At the same time, the dynamics of the baffle can be collected by the sensor to obtain information about the deformation of the track. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of one structure of the walking drive device in this embodiment;

[0022] Figure 2 This is a cross-sectional view of the walking drive device in this embodiment;

[0023] Figure 3 This is a schematic diagram of one structure of the output shaft in this embodiment;

[0024] Figure 4 This is a schematic diagram of one structure of the T-shaped wheel in this embodiment;

[0025] Figure 5 This is a cross-sectional view of one type of T-shaped wheel in this embodiment.

[0026] Reference numerals: 1. Housing; 2. Input shaft; 3. Drive mechanism; 3. First intermediate shaft; 301. Second intermediate shaft; 302. First spiral bevel gear; 303. Second spiral bevel gear; 304. First gear; 305. Second gear; 306. Third gear; 307. Tapered roller bearing; 308. First mounting groove; 309. Deep groove ball bearing; 310. Second mounting groove; 311. Cylindrical roller bearing; 312. Third mounting groove; 313. Output shaft; 4. Shaft body; 41. First shaft section; 411. Second shaft section; 412. Third shaft section; 413. Fourth shaft section; 414. Step; 415. Shaft end; 42. T-shaped wheel; 5. Wheel body; 51. Baffle unit; 52. L-shaped bracket; 6. Fourth mounting groove; 7. Damper; 8. Spring; 9. Oil seal spacer; 10. Sensor; 11. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example: A walking drive device, such as Figures 1-5 As shown, the enclosure includes a housing 1 made of QT400. The housing 1 is a square structure with an open bottom. The housing 1 has an inner cavity, in which an input shaft 2, a drive mechanism 3, and an output shaft 4 are provided. The output shaft 4 is located at one end of the housing 1, and its two ends are rotatably connected to the two side walls of the housing 1. A T-shaped wheel 5 is installed in the middle of the output shaft 4. The input shaft 2 is located at the other end of the housing 1 and is set perpendicular to the output shaft 4. One end of the input shaft 2 is connected to the drive mechanism 3, and the drive mechanism 3 drives the output shaft 4 to rotate, causing the T-shaped wheel 5 to move along the track. The other end of the input shaft 2 passes through the housing 1 and extends to the outside of the housing 1. An L-shaped bracket 6 is also provided inside the housing 1. The two ends of the L-shaped bracket 6 are connected to the inner wall of the housing 1. The L-shaped bracket 6 is integrated with the housing 1. One end of the L-shaped bracket 6 is located on one side of the T-shaped wheel 5 and provides support for the middle of the output shaft 4.

[0029] In use, the other end of the input shaft 2 is connected to the output shaft 4 of the reducer via a key. The input shaft 2 is driven to rotate, and the output shaft 4 is driven to rotate through the drive mechanism 3. The rotation of the output shaft 4 synchronously drives the T-shaped wheel 5 to rotate, causing the T-shaped wheel 5 to move along the track, thus achieving the effect of moving the traveling drive device. The T-shaped wheel 5 is located inside the housing 1, avoiding exposure to sun and rain, and providing a certain degree of corrosion protection. The output shaft 4, connected to the T-shaped wheel 5, is supported in multiple directions, improving its bending resistance and effectively increasing the load capacity of the overhead crane.

[0030] Furthermore, the drive mechanism 3 includes a first intermediate shaft 301, a second intermediate shaft 302, a first spiral bevel gear 303, a second spiral bevel gear 304, a first gear 305, a second gear 306, and a third gear 307; wherein the first intermediate shaft 301, the second intermediate shaft 302, and the output shaft 4 are arranged sequentially and parallel to each other, the second spiral bevel gear 304 and the first gear 305 are respectively installed at both ends of the first intermediate shaft 301, the first spiral bevel gear 303 is installed at one end of the input shaft 2 and meshes with the second spiral bevel gear 304, the second gear 306 is installed on the intermediate shaft and meshes with the first gear 305, and the third gear 307 is installed at one end of the output shaft 4 and meshes with the second gear 306, that is, the first gear 305, the second gear 306, and the third gear 307 mesh sequentially and are located on the same side.

[0031] In use, the input shaft 2 rotates and drives the first spiral bevel gear 303 to rotate. Since the first spiral bevel gear 303 and the second spiral bevel gear 304 mesh, they synchronously drive the first intermediate shaft 301 to rotate. Through the transmission connection of the first gear 305, the second gear 306 and the third gear 307, the output shaft 4 rotates synchronously and drives the T-shaped wheel 5 to rotate.

[0032] Furthermore, such as Figure 2 As shown, tapered roller bearings 308 are installed at both ends of the input shaft 2, both ends of the first intermediate shaft 301, and both ends of the output shaft 4. The housing 1 has a first mounting groove 309 for installing the tapered roller bearings 308. That is, the tapered roller bearings 308 are rotatably connected to both ends of the input shaft 2, both ends of the first intermediate shaft 301, and both ends of the output shaft 4, respectively, and the tapered roller bearings 308 are fixedly installed in the first mounting groove 309. By setting the tapered roller bearings 308, the radial load and unidirectional axial load capacity of the tapered roller bearings 308 are utilized to improve the stability and radial load of the input shaft 2, the first intermediate shaft 301, and the output shaft 4 during rotation.

[0033] Furthermore, deep groove ball bearings 310 are installed at both ends of the second intermediate shaft 302, and a second mounting groove 311 for installing the deep groove ball bearings 310 is opened at one end of the housing 1 and the L-shaped bracket 6. By setting the deep groove ball bearings 310, the low frictional resistance of the deep groove ball bearings 310 can enable more efficient transmission between the first gear 305, the second gear 306 and the third gear 307, thereby reducing energy consumption.

[0034] like Figure 2 and Figure 3 As shown, the output shaft 4 is made of 40Cr and includes a shaft body 41 and shaft ends 42 disposed at both ends of the shaft body 41. The shaft body 41 and the shaft ends 42 are integrated, and the diameter of the shaft body 41 is larger than the diameter of the shaft ends 42. That is, the shaft body 41 and the two shaft ends 42 are combined to form a structure that is thick in the middle and thin at both ends. By thickening the shaft body 41, the moment of inertia of the cross section is increased, the bending strength is improved, the bending stress in the middle area is reduced, and the torsional section modulus is higher. By thinning the shaft ends 42, on the one hand, redundant weight is reduced and costs are lowered, and on the other hand, the rotational inertia is reduced, improving the smoothness of the output shaft 4 during rotation.

[0035] Furthermore, the shaft body 41 adopts a multi-segment gradually decreasing structure, including a first shaft body segment 411, a second shaft body segment 412, a third shaft body segment 413, and a fourth shaft body segment 414 connected in sequence. The diameters of the first shaft body segment 411, the second shaft body segment 412, the third shaft body segment 413, and the fourth shaft body segment 414 gradually decrease proportionally. That is, the diameter ratio of the second shaft body segment 412 to the first shaft body segment 411, the diameter ratio of the third shaft body segment 413 to the second shaft body segment 412, and the diameter ratio of the fourth shaft body segment 414 to the third shaft body segment 413 are equal. Meanwhile, a step 415 is formed between two adjacent shaft sections; by dividing the shaft 41 of the output shaft 4 into four shaft sections with the diameters of the four shaft sections gradually decreasing proportionally, firstly, stress peaks are dispersed through a smooth transition of diameter changes to avoid stress concentration; secondly, the fixed frequency of the output shaft 4 is adjusted by changing the mass of each shaft section to reduce vibration; and thirdly, the step 415 formed between two adjacent shaft sections obstructs lubricating oil to prevent lubricating oil leakage, while the step 415 also limits the components installed on the shaft sections.

[0036] T-shaped wheel 5 is installed on the second shaft section 412. The outer side of T-shaped wheel 5 abuts against the step 415 between the first shaft section 411 and the second shaft section 412. The step 415 is used to limit the movement of T-shaped wheel 5 and improve the stability of T-shaped wheel 5 during operation.

[0037] A cylindrical roller bearing 312 is installed on the third shaft section 413 of the output shaft 4, and a third mounting groove 313 for mounting the cylindrical roller bearing 312 is provided at one end of the L-shaped bracket 6. By setting the cylindrical roller bearing 312 on one side of the T-shaped wheel 5, the radial load capacity of the cylindrical roller bearing 312 is used to support the middle part of the output shaft 4, thereby reducing the load on the output shaft 4 from the T-shaped wheel 5, improving the bending resistance of the output shaft 4, and thus increasing the load capacity of the travel drive device.

[0038] An oil seal spacer 10 is provided between the cylindrical roller bearing 312 and the T-shaped wheel 5. The oil seal spacer 10 is installed on the second shaft section 412, and its two ends respectively abut against the cylindrical roller bearing 312 and the T-shaped wheel 5. By providing the oil seal spacer 10, on the one hand, lubricating oil leakage is prevented, and on the other hand, dust and impurities are prevented from entering and affecting the transmission between the first gear 305, the second gear 306 and the third gear 307, as well as the rotation of the tapered roller bearing 308.

[0039] Furthermore, such as Figure 4 As shown, the T-shaped wheel 5 includes a wheel body 51. Multiple baffle units 52 are provided on the outer side of the wheel body 51 along its circumference. The baffle units 52 are fan-shaped, and multiple baffle units 52 are combined to form an annular baffle. The baffle units 52 have two states during use: a disengaged state and a contact state. A sensor 11 for obtaining changes in the state of the baffle units 52 is installed on the baffle units 52. Specifically, the disengaged state is when the baffle unit 52 is pushed outward and becomes disengaged from the wheel body 51, and the contact state is when the baffle unit 52 is not subjected to force and is subjected to an inward pulling force and becomes contact with the wheel body 51.

[0040] Due to the deformation of the track after prolonged use, a jamming phenomenon may occur when the T-shaped wheel 5 moves to the deformed position. The T-shaped wheel 5 is divided into two parts: a wheel body 51 and a baffle. The wheel body 51 is driven to move along the track, while the baffle, while maintaining its blocking effect, is dynamically configured. When the T-shaped wheel 5 moves to the deformed position of the track, the baffle unit 52 is forced outward (i.e., disengaged) to pass the deformed position, thus avoiding jamming. After the T-shaped wheel 5 passes the deformed position, the baffle unit 52 returns to its original state (i.e., abutting). Simultaneously, the change in the state of the baffle unit 52 can be used to obtain information about track deformation, providing a certain warning effect. A sensor 11 is used to collect information about the change in the state of the baffle unit 52 and transmit this information to the corresponding controller for alert. The sensor 11 can be a displacement sensor 11, a force sensor 11, etc. By dividing the baffle into multiple baffle units 52, the weight of the baffle is distributed, facilitating an effective and timely response to track deformation.

[0041] Specifically, such as Figure 5As shown, a fourth mounting groove 7 is provided on the outer side of the wheel body 51 at the three end corners corresponding to the baffle unit 52. A damper 8 is provided in the fourth mounting groove 7. One end of the damper 8 is fixed to the bottom of the fourth mounting groove 7, and the other end of the damper 8 is hinged to the baffle unit 52. A spring 9 is sleeved on the damper 8. One end of the spring 9 is fixed to the bottom of the fourth mounting groove 7, and the other end of the spring 9 is fixed to the baffle unit 52.

[0042] When the T-shaped wheel 5 moves to the deformation position of the track, the baffle unit 52 in contact with the deformation position is pushed outward, and a gap is formed between the baffle unit 52 and the wheel body 51 that matches the deformation position of the track, and the spring 9 is stretched. When the T-shaped wheel 5 passes the deformation position of the track, the spring 9 contracts and acts on the baffle unit 52, pulling the baffle unit 52 inward to restore its original shape. The damper 8 can slow down the speed of the baffle unit 52 when it is pulled inward, preventing the baffle unit 52 from directly hitting the wheel body 51 and being damaged. At the same time, the stroke of the baffle unit 52 can be limited by controlling the stroke of the damper 8 and the elasticity of the spring 9 to prevent the wheel body 51 from leaving the track.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A walking drive device, comprising a housing (1), characterized in that, The inner cavity of the housing (1) is provided with an input shaft (2), a drive mechanism (3) and an output shaft (4). The output shaft (4) is located at one end of the housing (1) and its two ends are rotatably connected to the two side walls of the housing (1). A T-shaped wheel (5) is installed in the middle of the output shaft (4). The input shaft (2) is located at the other end of the housing (1) and is set perpendicular to the output shaft (4). One end of the input shaft (2) is connected to the drive mechanism (3) and drives the output shaft (4) to rotate through the drive mechanism (3), so that the T-shaped wheel (5) moves along the track. The other end of the input shaft (2) passes through the housing (1) and extends to the outside of the housing (1). An L-shaped bracket (6) is also provided inside the housing (1). One end of the L-shaped bracket (6) is located on one side of the T-shaped wheel (5) and provides support for the middle of the output shaft (4). The output shaft (4) includes a shaft body (41) and shaft ends (42) disposed at both ends of the shaft body (41). The shaft body (41) has a multi-segment gradient structure, and the diameter of the shaft body (41) is larger than the diameter of the shaft ends (42). The shaft body (41) of the output shaft (4) includes a first shaft body section (411), a second shaft body section (412), a third shaft body section (413), and a fourth shaft body section (414) connected in sequence. The diameters of the first shaft body section (411), the second shaft body section (412), the third shaft body section (413), and the fourth shaft body section (414) gradually decrease proportionally, and a step (415) is formed between adjacent shaft body sections. The T-shaped wheel (5) is installed on the second shaft body section (412), and a cylindrical roller bearing (312) is installed on the third shaft body section (413). An oil seal spacer (10) is provided between the cylindrical roller bearing (312) and the T-shaped wheel (5). The oil seal spacer (10) is installed on the second shaft body section (412), and its two ends abut against the cylindrical roller bearing (312) and the T-shaped wheel (5) respectively. The T-shaped wheel (5) includes a wheel body (51). The outer side of the wheel body (51) is provided with a plurality of baffle units (52) along its circumference. The baffle units (52) are fan-shaped, and the plurality of baffle units (52) are combined to form an annular baffle. When the baffle unit (52) is subjected to an outward pushing force, it forms a disengaged state from the wheel body (51). When the baffle unit (52) is not subjected to force and is subjected to an inward pulling force, it forms an abutting state against the wheel body (51). A sensor (11) for obtaining the change of state of the baffle unit (52) is installed on the baffle unit (52). The shaft body (41) and the two shaft ends (42) are combined to form a structure that is thick in the middle and thin at both ends; the outer side of the T-shaped wheel (5) abuts against the step (415) between the first shaft body section (411) and the second shaft body section (412), and the step (415) is used to limit the T-shaped wheel (5).

2. The walking drive device according to claim 1, characterized in that, The drive mechanism (3) includes a first intermediate shaft (301), a second intermediate shaft (302), a first spiral bevel gear (303), a second spiral bevel gear (304), a first gear (305), a second gear (306), and a third gear (307). The first intermediate shaft (301), the second intermediate shaft (302), and the output shaft (4) are arranged in parallel. The second spiral bevel gear (304) and the first gear (305) are respectively installed at both ends of the first intermediate shaft (301). The first spiral bevel gear (303) is installed at one end of the input shaft (2) and meshes with the second spiral bevel gear (304). The second gear (306) is installed on the second intermediate shaft (302) and meshes with the first gear (305). The third gear (307) is installed at one end of the output shaft (4) and meshes with the second gear (306).

3. A walking drive device according to claim 2, characterized in that, Tapered roller bearings (308) are installed at both ends of the input shaft (2), both ends of the first intermediate shaft (301) and both ends of the output shaft (4), and the housing (1) is provided with a first mounting groove (309) for installing the tapered roller bearings (308).

4. A walking drive device according to claim 2, characterized in that, Both ends of the second intermediate shaft (302) are equipped with deep groove ball bearings (310), and one end of the housing (1) and the L-shaped bracket (6) is provided with a second mounting groove (311) for mounting the deep groove ball bearings (310).

5. A walking drive device according to claim 1, characterized in that, A cylindrical roller bearing (312) is installed in the middle of the output shaft (4), and a third mounting groove (313) for mounting the cylindrical roller bearing (312) is provided at one end of the L-shaped bracket (6).

6. A walking drive device according to claim 1, characterized in that, The outer side of the wheel body (51) has a fourth mounting groove (7) at the three corner positions corresponding to the baffle unit (52). A damper (8) is provided in the fourth mounting groove (7). One end of the damper (8) is fixed to the bottom of the fourth mounting groove (7), and the other end of the damper (8) is hinged to the baffle unit (52). A spring (9) is sleeved on the damper (8). One end of the spring (9) is fixed to the bottom of the fourth mounting groove (7), and the other end of the spring (9) is fixed to the baffle unit (52).

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