Pickup type overhead working truck power take-off device

Abstract

The utility model relates to a power take-off device for a pickup type overhead working truck. The power take-off device comprises a driving wheel, a driven wheel, a gear pump, a connecting seat, an electromagnet, a friction plate and a pressure spring, the driving wheel is used for being coaxially connected with a belt wheel of a pickup truck. The driven wheel is driven by the driving wheel to rotate. The gear pump is installed on the pickup truck by being connected with the connecting base, an input shaft of the gear pump is in transmission connection with the friction plate, the friction plate can slide along the input shaft, the input shaft, the friction plate and the driven wheel are coaxially installed, and the electromagnet is installed on the connecting base and used for attracting the friction plate so that the friction plate can make close contact with the driven wheel. The two ends of the compression spring abut against the input shaft and the friction plate respectively. The utility model is suitable for most pickup trucks and has strong universality.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a power take-off device for a pickup type aerial work vehicle. Background Art

[0002] With the development of the economy, the application of special vehicles in various industries is becoming more and more extensive. In the field of aerial work vehicles, there is also a trend towards lightweight and miniaturization. In response to this trend, the company has developed an aerial work vehicle model based on a small pickup truck chassis.

[0003] A power take-off refers to an additional power output device installed on the outside of the gearbox. However, existing small pickup truck engines do not have their own power take-off installation location, so an external fuel engine system or motor system is generally used to independently output power and drive a gear pump for power take-off. The external fuel engine system has disadvantages such as high noise, complex structure, and large space occupation; while the motor system has disadvantages such as easy heat generation, low working efficiency, and inability to work for a long time. Therefore, how to use the pickup truck's own power system to take off power has become an urgent problem to be solved. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a pickup-type aerial work vehicle power take-off device, including a driving wheel, a driven wheel, a gear pump, a connecting seat, an electromagnet, a friction plate and a compression spring.

[0005] The drive wheel is coaxially connected to the pulley of the pickup truck, and the driven wheel is driven by the drive wheel. The gear pump is mounted on the pickup truck via the connecting base. The input shaft of the gear pump is connected to the friction plate, and the friction plate can slide along the input shaft. The input shaft, friction plate, and driven wheel are coaxially mounted. An electromagnet is mounted on the connecting base to attract the friction plate, ensuring close contact between the friction plate and the driven wheel. The ends of the compression spring respectively abut the input shaft and the friction plate.

[0006] During operation, the pickup's built-in pulley rotates the drive wheel, which in turn drives the driven wheel. When the gear pump is needed, the electromagnet is energized to attract the friction plate, bringing it into close contact with the driven wheel. This rotates the friction plate, which in turn drives the input shaft. When the gear pump is no longer needed, the electromagnet is de-energized, and the friction plate, driven by the compression spring, disengages from the driven wheel, disconnecting the power input.

[0007] Furthermore, the connecting seat includes a fixed seat and a mounting seat, the gear pump is installed on the mounting seat, the mounting seat is connected to the fixed seat, and the fixed seat is used to connect to the pickup truck; a first bearing is provided in the mounting seat, and the input shaft is rotatably connected to the mounting seat through the first bearing.

[0008] Furthermore, the fixing base is provided with at least three first connection holes for mounting the fixing base on the pickup truck, and the axes of at least three first connection holes are not coplanar, so that the connection is more stable.

[0009] Furthermore, a long hole and a second connecting hole are provided on the fixing seat, and the mounting seat is detachably connected to the fixing seat through bolts passing through the second connecting hole and the long hole, so that one end of the mounting seat can rotate around the second connecting hole and along the long hole relative to the fixing seat. The axes of the second connecting hole, the driving wheel and the input shaft are parallel. When the positions of the driving wheel and the fixing seat are relatively fixed, the position of the mounting seat can be adjusted to adjust the relative positions of the driving wheel and the driven wheel.

[0010] Furthermore, the driving wheel and the driven wheel are pulleys, and the driving wheel drives the driven wheel through a belt. The tightness of the belt can be adjusted by adjusting the relative position of the driving wheel and the driven wheel.

[0011] Furthermore, the input shaft is provided with a spline section, and the friction plate is slidably connected to the spline section.

[0012] Furthermore, a locking nut is included, and the end of the input shaft is provided with an external thread adapted to the locking nut to prevent the friction plate from slipping.

[0013] Furthermore, a second bearing is provided on the mounting seat, and the driven wheel is rotatably connected to the connecting seat via the second bearing.

[0014] Furthermore, a circular receiving groove is provided in the driven wheel, and the electromagnet is arranged in the receiving groove, which saves space and reduces the overall volume of the device.

[0015] Furthermore, the driving wheel is provided with a plurality of third connection holes for connecting to the pickup pulley, so as to make the connection stable and increase the coaxiality.

[0016] The utility model can well realize the power take-off operation, adopts the belt transmission form, has a simple structure, low cost, easy assembly and disassembly, runs smoothly and noiselessly, and has the function of overload protection. The coaxiality is improved by secondary finishing and modification of the pulley provided by the chassis and the self-made pulley to achieve high-precision coaxial matching.

[0017] The fixing seat is designed with three fixed fulcrums for installation with the pickup truck to solve the problem of insufficient rigidity of the connecting seat. In addition, the arc-shaped long hole design of the connecting seat realizes the adjustment of belt tension and absorption of vibration stress to improve the overall reliability of the power take-off device.

[0018] This power take-off device uses the pickup truck's own engine as its power source, minimizing modifications to the truck's chassis and making the overall vehicle design more compact. The relatively removable components minimize its footprint and facilitate machining and maintenance. It is suitable for most pickup truck models and offers strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 yes Figure 1 The left schematic diagram of

[0022] Figure 3 yes Figure 2 Schematic cross-section of the middle AA;

[0023] Figure 4 This is a schematic diagram of the state in which the electromagnet in the embodiment of the utility model is not energized;

[0024] Figure 5 This is a schematic diagram of the state in which the electromagnet is energized in the embodiment of the utility model;

[0025] In the figure: 1. Driving wheel; 2. Driven wheel; 3. Gear pump; 4. Connecting seat; 5. Electromagnet; 6. Friction plate; 7. Compression spring; 8. Pulley; 9. Fixed seat; 10. Mounting seat; 11. First bearing; 12. First connecting hole; 13. Long hole; 14. Second connecting hole; 15. Belt; 16. Spline section; 17. Locking nut; 18. Second bearing; 19. Receiving groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-3 The pickup-type aerial work vehicle power take-off device of this embodiment includes a driving wheel 1, a driven wheel 2, a gear pump 3, a connecting seat 4, an electromagnet 5, a friction plate 6 and a compression spring 7.

[0028] The driving wheel 1 is used to coaxially connect to the pulley 8 of the pickup truck, and the driven wheel 2 is driven to rotate by the driving wheel 1. In this embodiment, the driving wheel 1 is provided with a plurality of third connecting holes for connecting to the pickup truck pulley 8. Accordingly, it is necessary to process holes for connection on the pickup truck's own pulley 8. The chassis's own pulley 8 is subjected to secondary finishing and modification to achieve coaxial matching with the driving wheel 1 with higher precision, thereby solving the coaxiality problem.

[0029] The gear pump 3 is mounted on the pickup truck via the connecting base 4. In this embodiment, the connecting base 4 includes a fixing base 9 and a mounting base 10. The gear pump 3 is mounted on the mounting base 10, which is connected to the fixing base 9. The fixing base 9 is used to connect to the pickup truck. A first bearing 11 is provided within the mounting base 10. The input shaft of the gear pump 3 is rotatably connected to the mounting base 10 via the first bearing 11, making the overall structure compact.

[0030] Vibration is inevitable when the power take-off device is operating at high speeds. Preferably, the mounting base 9 is provided with at least three first connection holes 12 for mounting the mounting base 9 on the pickup truck. The axes of at least three first connection holes 12 are not coplanar, increasing overall rigidity and making the connection more stable. In this embodiment, three first connection holes 12 are provided for connection to the mounting holes of the pickup truck engine via bolts.

[0031] Preferably, the fixing base 9 is provided with an elongated hole 13 and a second connecting hole 14. The mounting base 10 is detachably connected to the fixing base 9 by bolts passing through the second connecting hole 14 and the elongated hole 13, so that one end of the mounting base 10 can rotate relative to the fixing base 9 around the second connecting hole 14 and along the elongated hole 13. The second connecting hole 14, the axis of the drive wheel 1 and the input shaft are parallel. When the drive wheel 1 and the fixing base 9 are relatively fixed, the position of the mounting base 10 can be adjusted, thereby adjusting the relative position of the drive wheel 1 and the driven wheel 2. In the case where the drive wheel 1 and the driven wheel 2 are connected by a belt drive, such as a belt or chain, the tightness of the belt can be adjusted; in the case where the drive wheel 1 and the driven wheel 2 are connected by other forms of transmission, such as a gear connection, the relative position of the gear pump 3 can also be adjusted. In this embodiment, the drive wheel 1 and the driven wheel 2 are pulleys. The drive wheel 1 drives the driven wheel 2 via a belt 15. The tightness of the belt 15 can be adjusted by adjusting the relative position of the drive wheel 1 and the driven wheel 2.

[0032] The input shaft of the gear pump 3 is in driving connection with the friction plate 6, and the friction plate 6 can slide along the input shaft. In this embodiment, the input shaft is provided with a spline section 16, and the friction plate 6 is slidably connected to the spline section 16. Preferably, a locking nut 17 is also included. The end of the input shaft is provided with an external thread that adapts to the locking nut 17. The locking nut 17 can effectively prevent the friction plate 6 from slipping.

[0033] The input shaft, friction plate 6, and driven wheel 2 are coaxially mounted. In this embodiment, a second bearing 18 is provided on the mounting base 10. The driven wheel 2 is rotatably connected to the connecting base 4 via the second bearing 18, making the overall structure compact. In this embodiment, it is mounted on the mounting base 10. An electromagnet 5 is mounted on the connecting base 4 to attract the friction plate 6, ensuring close contact between the friction plate 6 and the driven wheel 2. In this embodiment, it is mounted on the mounting base 10. In this embodiment, a circular receiving groove 19 is provided within the driven wheel 2, and the electromagnet 5 is placed within the receiving groove 19, saving space and reducing the overall size of the device. The ends of the compression spring 7 respectively abut the input shaft and the friction plate 6. In this embodiment, the compression spring 7 abuts one end of the input shaft, specifically the inner ring of the first bearing 11. By abutting the inner ring of the first bearing 11, it abuts the input shaft. Of course, in other embodiments, the compression spring 7 can directly abut the input shaft, but this requires a dedicated shoulder. In this embodiment, by abutting the compression spring 7 against the first bearing 11, a shoulder is eliminated.

[0034] See also Figure 4 When in use, the pickup truck's own pulley 8 is operated to drive the driving wheel 1 to rotate, thereby driving the driven wheel 2 to rotate. Figure 5 When the gear pump 3 is required to operate, the electromagnet 5 is energized to attract the friction plate 6, causing it to come into close contact with the driven wheel 2, thereby driving the friction plate 6 to rotate, and in turn driving the input shaft to rotate. When the gear pump 3 is no longer required to operate, the electromagnet 5 is de-energized, and the friction plate 6 is separated from the driven wheel 2 by the action of the compression spring 7, thereby disconnecting the power input.

[0035] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A pickup-type aerial work vehicle power take-off device, characterized in that: It includes a driving wheel, a driven wheel, a gear pump, a connecting seat, an electromagnet, a friction plate and a compression spring; the driving wheel is used to coaxially connect to the pulley of the pickup truck, and the driven wheel is driven to rotate by the driving wheel; the gear pump is installed on the pickup truck by connecting to the connecting seat, and the input shaft of the gear pump is connected to the friction plate, and the friction plate can slide along the input shaft. The input shaft, friction plate and driven wheel are coaxially installed, and the electromagnet is installed on the connecting seat to adsorb the friction plate so that the friction plate and the driven wheel are in close contact, and the two ends of the compression spring respectively abut the input shaft and the friction plate.

2. The power take-off device of a pickup-type aerial work vehicle according to claim 1, characterized in that: The connecting seat includes a fixed seat and a mounting seat. The gear pump is installed on the mounting seat, and the mounting seat is connected to the fixed seat. The fixed seat is used to connect to the pickup truck. A first bearing is provided in the mounting seat, and the input shaft is rotatably connected to the mounting seat through the first bearing.

3. The power take-off device of a pickup-type aerial work vehicle according to claim 2, characterized in that: The fixing base is provided with at least three first connecting holes for mounting the fixing base on the pickup truck; the axes of at least three first connecting holes are not coplanar.

4. The power take-off device of a pickup-type aerial work vehicle according to claim 2, characterized in that: The fixing seat is provided with a long hole and a second connecting hole. The mounting seat is detachably connected to the fixing seat through bolts passing through the second connecting hole and the long hole, so that one end of the mounting seat can rotate around the second connecting hole and along the long hole relative to the fixing seat; the axis of the second connecting hole, the driving wheel and the input shaft are parallel.

5. The power take-off device of a pickup-type aerial work vehicle according to claim 4, characterized in that: The driving wheel and the driven wheel are pulleys, and the driving wheel drives the driven wheel through a belt.

6. The power take-off device of a pickup-type aerial work vehicle according to claim 1, characterized in that: The input shaft is provided with a spline section, and the friction plate is slidably connected to the spline section.

7. The power take-off device of a pickup-type aerial work vehicle according to claim 6, characterized in that: It also includes a locking nut, and the end of the input shaft is provided with an external thread adapted to the locking nut.

8. The power take-off device of a pickup-type aerial work vehicle according to claim 1, characterized in that: A second bearing is also provided on the mounting seat, and the driven wheel is rotatably connected to the connecting seat via the second bearing.

9. The power take-off device of a pickup-type aerial work vehicle according to claim 8, characterized in that: A circular accommodating groove is provided in the driven wheel, and the electromagnet is arranged in the accommodating groove.

10. The power take-off device of a pickup-type aerial work vehicle according to claim 1, characterized in that: The driving wheel is provided with a plurality of third connection holes for connecting with the pickup pulley.

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