Variable-frequency running sports car

Abstract

The utility model provides a variable-frequency running sports car, and belongs to the technical field of elevators. The technical problem that driving stability is affected due to insufficient installation precision of an existing variable-frequency running trolley is solved. A variable-frequency running sports car comprises a sports car shell and a variable-frequency control box fixedly connected with the sports car shell, a driving fixing shaft and / or a driven fixing shaft are / is formed in the sports car shell, the driving fixing shaft is sleeved with a driving bearing, the driving bearing is sleeved with a driving wheel, the driven fixing shaft is sleeved with a driven bearing, and the driven bearing is sleeved with a driven wheel. A driving motor is arranged in the frequency conversion control box and comprises a motor shaft, a mounting hole is formed in the driving fixing shaft, the driving wheel protrudes into the mounting hole to form a fixing cylinder, the motor shaft penetrates through the mounting hole to be fixedly connected with the fixing cylinder, a plurality of fixing strips protrude from the inner wall of the sports car shell, and a mounting groove is defined by the fixing strips. And an auxiliary wheel assembly is fixedly connected in the mounting groove. The utility model has the advantages of high strength, stable driving and the like.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting technology, specifically referring to a variable frequency running trolley. Background Technology

[0002] A track-running trolley is a mechanical device that moves horizontally along an I-beam track. The main rollers of the trolley typically rotate vertically against the I-beam. To maintain lateral balance, auxiliary rollers are installed on the trolley and rotate horizontally against the I-beam, ensuring stable movement. However, in existing technology, the auxiliary rollers suffer from low installation precision, resulting in a loose fit with the I-beam. When the trolley moves a heavy load, slippage can easily occur, causing the track rollers to derail and compromise driving safety. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a variable frequency running car.

[0004] The technical problem this invention aims to solve is how to improve the travel stability of a sports car.

[0005] The objective of this utility model can be achieved through the following technical solution: A variable frequency running trolley includes a pair of integrally formed trolley shells and a variable frequency control box fixedly connected to the trolley shells. An active fixed shaft and / or a driven fixed shaft are formed inside the trolley shells. An active fixed shaft is fitted with an active bearing, and an active wheel is fitted inside the active bearing. A driven fixed shaft is fitted with a driven bearing, and a driven wheel is fitted inside the driven bearing. A drive motor is installed inside the variable frequency control box. The drive motor includes a motor shaft. An installation hole is provided inside the active fixed shaft. A fixed cylinder protrudes from the active wheel toward the installation hole. The motor shaft passes through the installation hole and is fixedly connected to the fixed cylinder. Several fixing strips protrude from the inner wall of the trolley shell. The fixing strips enclose and form an installation groove. A secondary wheel assembly is fixedly connected inside the installation groove. The fixing strips connect the active fixed shaft and the driven fixed shaft, or the fixing strips connect two driven fixed shafts.

[0006] In this design, the variable frequency drive trolley uses a die-cast, one-piece shaft housing, increasing the overall strength of the housing and the strength of both the active and driven fixed shafts, thus enhancing the trolley's load-bearing capacity. The trolley housings are symmetrically arranged relative to the I-beam, with one housing having one active and one driven wheel, and the other having two driven wheels. The housings also include detachable and installable auxiliary wheel assemblies, secured by mounting slots and fixing strips. This reduces installation errors and ensures more precise and stable contact between the auxiliary wheel assembly and the I-beam, improving the trolley's stability during variable frequency operation.

[0007] In the aforementioned variable frequency running vehicle, the auxiliary wheel assembly includes a fixed bracket, a support shaft is fixedly connected to the fixed bracket, and an auxiliary wheel is sleeved on the support shaft.

[0008] In the aforementioned variable frequency running car, a retaining ring and a retaining washer are provided on the supporting shaft, and a pair of secondary bearings are provided between the secondary wheel and the supporting shaft. The lower end of one secondary bearing abuts against the retaining ring and the upper end abuts against the secondary wheel, while the upper end of the other secondary bearing abuts against the retaining washer and the lower end abuts against the secondary wheel.

[0009] In the aforementioned variable frequency running carriage, the fixed bracket includes a vertical fixing part and a horizontal fixing part. The horizontal fixing part is fixed to the supporting shaft, and a fixing washer is located between the horizontal fixing part and the secondary bearing. The vertical fixing part is fixedly connected to the end face of the fixing strip by fasteners. This reduces installation errors in the secondary wheel assembly, makes the contact between the secondary wheel assembly and the I-beam more precise and stable, and improves the driving stability of the variable frequency running carriage.

[0010] In the aforementioned variable frequency running vehicle, a fixing groove is formed on the outer shell of the vehicle. The fixing groove and the mounting groove are connected. The end of the support shaft away from the fixed bracket is engaged and fixed with the fixing groove.

[0011] In the aforementioned variable frequency running vehicle, an elastic gasket is provided between the vertical fixing part and the fixing bar.

[0012] In the aforementioned variable frequency running vehicle, a through hole is provided in the driven fixed shaft.

[0013] In the aforementioned variable frequency running trolley, a connecting part is formed on the lower part of the trolley shell, and a connecting shaft is connected to the connecting part of the two trolley shells. A connecting hole is provided in the connecting part, and several support blocks protrude inward on the inner wall of the connecting hole. The side of the connecting shaft abuts against the support blocks.

[0014] In the aforementioned variable frequency running vehicle, the connecting part is provided with a limiting groove that opens radially along the connecting hole, a limiting block is provided in the limiting groove, and a slot is provided on the connecting shaft to engage and fix with the limiting block.

[0015] In the aforementioned variable frequency running vehicle, the variable frequency control box includes a box body and a drive motor and variable frequency components installed inside the box body. Several fixing posts protrude from the outside of the variable frequency control box toward the outer shell of the vehicle body, and the fixing posts abut against and are fixed to the outer shell of the vehicle body.

[0016] Compared with existing technologies, the technical advantages of this utility model are as follows: 1. This solution, through the integrated molding of the trolley shell, active fixed shaft, driven fixed shaft, fixing strip, and mounting groove, enables the variable frequency running trolley to have better load-bearing capacity and more accurate installation dimensions, ensuring the stable operation of the variable frequency running trolley. 2. The integrated installation of the auxiliary wheel assembly and the fixed fit between the mounting groove and the fixing strip can reduce installation errors, making the contact between the auxiliary wheel assembly and the I-beam more precise and stable, thus improving the driving stability of the variable frequency running trolley. Attached Figure Description

[0017] Figure 1 This utility model is a three-dimensional Figure 1 .

[0018] Figure 2 This is a cross-section of the utility model. Figure 1 .

[0019] Figure 3 This is a cross-section of the utility model. Figure 2 .

[0020] Figure 4 This utility model is a three-dimensional Figure 2 .

[0021] Figure 5 This is a cross-section of the utility model. Figure 3 .

[0022] Part Number Markings: 1. Carrier Shell; 2. Variable Frequency Control Box; 3. Active Fixed Shaft; 4. Driven Fixed Shaft; 5. Active Bearing; 6. Active Wheel; 7. Driven Bearing; 8. Driven Wheel; 9. Drive Motor; 10. Mounting Hole; 11. Fixed Cylinder; 12. Fixing Strip; 13. Mounting Slot; 14. Fixed Bracket; 15. Support Shaft; 16. Secondary Wheel; 17. Fixing Ring; 18. Fixing Washer; 19. Secondary Bearing; 20. Vertical Fixing Part; 21. Horizontal Fixing Part; 22. Fixing Slot; 23. Connecting Part; 24. Connecting Shaft; 25. Connecting Hole; 26. Support Block; 27. Limiting Slot; 28. Limiting Block; 29. ​​Variable Frequency Component; 30. Fixed Column; 31. Slot. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] according to Figures 1 to 5 As shown, a variable frequency drive (VFD) sports car includes a pair of integrally formed sports car housings 1 and a variable frequency control box 2 fixedly connected to the sports car housings 1. The variable frequency control box 2 houses a drive motor and a variable frequency drive assembly 29. The sports car housings 1 are symmetrically arranged. Several fixing posts 30 protrude from the outer side of the variable frequency control box 2 towards the sports car housings 1, and the fixing posts 30 abut against and are fixed to the outer side of the sports car housings 1, increasing the heat dissipation space between the variable frequency control box 2 and the sports car housings 1. Several heat sinks are provided on the outer side of the variable frequency control box 2, and a heat sink is also provided on the side of the variable frequency control box 2 closest to the sports car housings 1. The heat sinks are at a certain distance from the sports car housings 1, improving heat dissipation while preventing heat transfer to the sports car housings 1.

[0026] The sports car shell 1 is die-cast and has an active fixed shaft 3 and / or a driven fixed shaft 4. The sports car shell 1 has two shafts and is symmetrically arranged relative to the I-beam. One sports car shell 1 has one active wheel 6 and a driven wheel 8, and the other sports car shell 1 has two driven wheels 8. The sports car shell 1 with two driven wheels 8 and the sports car shell 1 with one active wheel 6 and a driven wheel 8 are substantially similar in shape. The sports car shell 1 described herein is based on the structure including the active wheel 6 and the driven wheel 8. An active bearing 5 is sleeved on the active fixed shaft 3, and the active wheel 6 is sleeved on the active bearing 5. The drive motor 9 includes a motor shaft. A mounting hole 10 is provided inside the active fixed shaft 3. A fixed cylinder 11 protrudes from the active wheel 6 into the mounting hole 10. The motor shaft passes through the mounting hole 10 and is fixedly connected to the fixed cylinder 11. A retaining ring is provided on the motor shaft to restrict the axial movement of the active bearing 5. A driven bearing 7 is fitted over the driven fixed shaft 4. A retaining ring is provided on the driven fixed shaft 4 to restrict the axial movement of the driven bearing 7. A through hole is provided in the driven fixed shaft 4 to reduce the weight of the sports car housing 1. A driven wheel 8 is fitted over the driven bearing 7. Several fixing strips 12 protrude from the inner wall of the sports car housing 1. The fixing strips 12 enclose and form a mounting groove 13. A secondary wheel assembly is fixedly connected in the mounting groove 13. In one sports car housing 1, the fixing strips 12 are arranged in different shapes around the outer periphery of the driving fixed shaft 3 and the driven fixed shaft 4 and connect the driving fixed shaft 3 and the driven fixed shaft 4. In another sports car housing 1, the fixing strips 12 are arranged in different shapes around the outer periphery of the two driven fixed shafts 4 and connect the two driven fixed shafts 4, thereby improving the strength of the driving fixed shaft 3 and the driven fixed shaft 4 and improving the overall stability. The auxiliary wheel assembly can be disassembled and installed as a whole. The auxiliary wheel assembly is fixed by the mounting groove 13 and the fixing strip 12, which reduces the installation error of the auxiliary wheel assembly, makes the contact between the auxiliary wheel assembly and the I-beam more precise and stable, and improves the driving stability of the variable frequency running car.

[0027] The auxiliary wheel assembly includes a fixed bracket 14, on which a support shaft 15 is fixedly connected. An auxiliary wheel 16 is fitted onto the support shaft 15. The center position of the auxiliary wheel 16 is offset outward relative to the center position of the drive wheel 6 or the driven wheel 8, which can better balance the vehicle. A fixing ring 17 and a fixing washer 18 are provided on the support shaft 15. A pair of auxiliary bearings 19 are provided between the auxiliary wheel 16 and the support shaft 15. The lower end of one auxiliary bearing 19 abuts against the fixing ring 17 and the upper end abuts against the auxiliary wheel 16. The upper end of the other auxiliary bearing 19 abuts against the fixing washer 18 and the lower end abuts against the auxiliary wheel 16. The fixed bracket 14 includes a vertical fixing part 20 and a horizontal fixing part 21. The horizontal fixing part 21 is fixed to the support shaft 15. The fixing washer 18 is located between the horizontal fixing part 21 and the auxiliary bearings 19. The vertical fixing part 20 is fixedly connected to the end face of the fixing strip 12 by fasteners. This design reduces installation errors in the auxiliary wheel assembly, ensuring more precise and stable contact between the auxiliary wheel assembly and the I-beam, thus improving the driving stability of the variable frequency drive trolley. A fixing groove 22 is formed on the trolley housing 1, which communicates with the mounting groove 13. The end of the support shaft 15 furthest from the fixed bracket 14 engages and is fixed in the fixing groove 22. An elastic gasket is provided between the vertical fixing part 20 and the fixing strip 12.

[0028] The lower part of the sports car shell 1 has a connecting part 23. A connecting shaft 24 is connected to the connecting part 23 of the two sports car shells 1. A connecting hole 25 is provided in the connecting part 23. Several support blocks 26 protrude inward on the inner wall of the connecting hole 25. The side of the connecting shaft 24 abuts against the support blocks 26. A limiting groove 27 is provided on the connecting part 23, which opens radially along the connecting hole 25. A limiting block 28 is provided in the limiting groove 27. A slot 31 is provided on the connecting shaft 24 to engage and fix with the limiting block 28.

[0029] The integrated carriage housing 1, active fixed shaft 3, driven fixed shaft 4, fixing strip 12, and mounting groove 13 enable the variable frequency carriage to have better load-bearing capacity and more accurate installation dimensions, ensuring stable operation of the variable frequency carriage.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A variable frequency operation running car, comprising a pair of running car shells (1) integrally formed and a variable frequency control box (2) fixedly connected with the running car shells (1), characterized in that: The sports car shell (1) is formed with a driving fixed shaft (3) and / or a driven fixed shaft (4), the driving fixed shaft (3) is provided with a driving bearing (5), the driving bearing (5) is provided with a driving wheel (6), the driven fixed shaft (4) is provided with a driven bearing (7), the driven bearing (7) is provided with a driven wheel (8), a variable frequency control box (2) is provided with a driving motor (9), the driving motor (9) comprises a motor shaft, the driving fixed shaft (3) is provided with a mounting hole (10), the driving wheel (6) is provided with a fixed cylinder (11) protruding into the mounting hole (10), the motor shaft is fixedly connected with the fixed cylinder (11) through the mounting hole (10), the inner wall of the sports car shell (1) is provided with a plurality of fixed strips (12), the fixed strips (12) are combined to form a mounting groove (13), a sub-wheel assembly is fixedly connected in the mounting groove (13), the fixed strips (12) are connected with the driving fixed shaft (3) and the driven fixed shaft (4) or the fixed strips (12) are connected with two driven fixed shafts (4).

2. The variable frequency running vehicle according to claim 1, characterized in that: The sub-wheel assembly comprises a fixed support (14), and the fixed support (14) is fixedly connected with a supporting shaft (15).

3. The variable frequency running vehicle according to claim 2, characterized in that: The supporting shaft (15) is provided with a fixed clamping ring (17) and a fixed washer (18), and a pair of sub-bearings (19) are arranged between the supporting shaft (15) and the sub-wheel (16), wherein the lower end of one of the sub-bearings (19) abuts against the fixed clamping ring (17), and the upper end abuts against the sub-wheel (16); and the upper end of the other sub-bearing (19) abuts against the fixed washer (18), and the lower end abuts against the sub-wheel (16).

4. The variable frequency running vehicle according to claim 3, characterized in that: The fixed support (14) comprises a vertical fixed part (20) and a horizontal fixed part (21), the horizontal fixed part (21) is fixed with the supporting shaft (15), the fixed washer (18) is located between the horizontal fixed part (21) and the sub-bearing (19), and the vertical fixed part (20) is fixedly connected with the end surface of the fixed strip (12) through a fastener.

5. A variable frequency running trolley as claimed in claim 4, wherein: The sports car shell (1) is formed with a fixed groove (22), the fixed groove (22) is communicated with the mounting groove (13), and the end of the supporting shaft (15) away from the fixed support (14) is clamped and fixed with the fixed groove (22).

6. The variable frequency running vehicle according to claim 4, characterized in that: Elastic washers are arranged between the vertical fixed part (20) and the fixed strip (12).

7. The variable frequency running vehicle according to claim 1, characterized in that: The driven fixed shaft (4) is provided with a through hole.

8. The variable frequency running vehicle according to claim 1, characterized in that: The lower part of the sports car shell (1) is formed with a connecting part (23), the connecting parts (23) of two sports car shells (1) are connected with a connecting shaft (24), the connecting part (23) is provided with a connecting hole (25), the inner wall of the connecting hole (25) is protruded inwardly with a plurality of supporting blocks (26), and the side surface of the connecting shaft (24) abuts against the supporting blocks (26).

9. The variable frequency running vehicle according to claim 8, characterized in that: The connecting part (23) is provided with a limiting groove (27) opening radially along the connecting hole (25), the limiting groove (27) is provided with a limiting block (28), the connecting shaft (24) is provided with a clamping groove (31) clamped and fixed with the limiting block (28).

10. A variable frequency running trolley as claimed in any one of claims 1 to 9, wherein: The frequency conversion control box (2) is provided with a frequency conversion assembly (29) inside, and the frequency conversion control box (2) is protruded with a plurality of fixing columns (30) outside towards the racing car shell (1), and the fixing columns (30) are abutted and fixed with the outside of the racing car shell (1).

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