Automatic boss lifting hub and lifting method thereof

Abstract

The invention discloses a boss automatic lifting hub and a lifting method thereof. The boss automatic lifting hub comprises a hub shell, a hub driving shaft, a driving shaft friction plate, a driving spline shaft, a spline shaft friction plate, a linkage rod, a driving switching shaft, a switching relay, a switching shaft friction plate, a boss lifting lead screw, a bevel lead screw nut seat, a lifting boss and a lead screw shaft friction plate. The hub driving shaft and the boss lifting lead screw are driven by the same motor, and a long spline groove is formed in the hub shell. According to the boss automatic lifting hub, rotation of the hub and lifting of the boss only need to be driven by the same external motor, and no extra motor needs to be arranged; in the motor vehicle detection process, the boss can be automatically lifted, the tested vehicle does not need to be driven away from the test equipment, and the test efficiency is improved; the structure is compact and can be integrated in the hub, and space is saved; a relay is adopted to control switching, and operation is simple; in the switching process, the hub loses power and gradually stops, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicle detection, and in particular to an automatic lifting hub of a boss and a lifting method thereof. Background Art

[0002] In the field of motor vehicle testing technology, the wheel hub is a component used to simulate road conditions and detect the stability of motor vehicles, which is commonly found in motor vehicle test benches or chassis dynamometers. In order to simulate complex road conditions, it is necessary to install a boss on the wheel hub of the motor vehicle testing equipment to detect the stability of the motor vehicle when passing through uneven roads. Some of the wheel hubs used in existing motor vehicle testing equipment do not have a boss. In most cases, a removable boss is used or a wheel hub with a boss is replaced; to install a removable boss, the equipment must be stopped and the motor vehicle must be driven away from the testing equipment. After the wheel hub is completely stopped, it must be manually rotated to the installation position, and the boss must be fixed with bolts. After installation, the tested motor vehicle must be driven back to the testing position; to simulate different road conditions, it is sometimes necessary to prepare multiple sets of wheel hubs of different specifications; the method of replacing the wheel hub is similar, and the whole process is very cumbersome. If the boss on the wheel hub that simulates complex road conditions can be automatically raised and lowered, there is no need to stop the equipment and remove the tested vehicle. The process of motor vehicle stability testing will be shortened a lot, and the testing efficiency will be greatly increased. Therefore, it is very necessary to design a wheel hub with an automatically raised and lowered boss for motor vehicle stability testing equipment. Summary of the invention

[0003] The present invention discloses a boss automatic lifting wheel hub and a lifting method thereof, comprising a wheel hub shell, a wheel hub driving shaft, a driving shaft friction plate, a driving spline shaft, a spline shaft friction plate, a linkage rod, a driving switching shaft, a switching relay, a switching shaft friction plate, a boss lifting screw, a bevel screw nut seat, a lifting boss, and a screw shaft friction plate; the rotation process of the wheel hub is driven by a rotating shaft motor, and the motor can stop rotating the wheel hub after the transmission shaft is switched, driving the boss to rise and fall, and the switching process is controlled by a relay; the present invention has the advantages of compact structure, safety and reliability, convenient operation, and flexible adjustment.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The boss automatic lifting wheel hub includes a hub shell, a hub drive shaft, a drive shaft friction plate, a drive spline shaft, a spline shaft friction plate, a linkage rod, a drive switching shaft, a switching relay, a switching shaft friction plate, a boss lifting screw, a bevel screw nut seat, a lifting boss, and a screw shaft friction plate. The hub drive shaft and the boss lifting screw share the same motor drive.

[0006] Furthermore, there is a long spline groove inside the wheel hub shell, the driving spline shaft is installed in it, and the other end is equipped with the spline shaft friction plate, which can be connected with the driving shaft friction plate; the driving shaft friction plate is installed on the wheel hub driving shaft, and the wheel hub driving shaft is provided with a gear that rotates with the driving shaft, and the gear is meshed with the gear on the driving switching shaft; the switching relay is provided at the end of the driving switching shaft and is installed on the inner wall of the wheel hub shell; the driving switching shaft and the driving spline shaft are connected through the linkage rod; the other end of the driving switching shaft is equipped with the switching shaft friction plate, which is connected with the screw shaft friction plate; the boss lifting screw is installed in the wheel hub shell, and the end screw seat is installed on the inner wall; the nut seat installed on the boss lifting screw is the bevel screw nut seat, and the upper surface is a bevel connected to the lifting boss.

[0007] Furthermore, a long spline groove is installed on the inner wall of the hub shell to dock with the driving spline shaft, so that the power from the external driving motor can still be stably transmitted after the driving spline shaft translates a certain distance; the docking of the driving friction plate and the spline shaft friction plate can affect the starting and stopping of the driving spline shaft.

[0008] Furthermore, after the driving friction plate is docked with the spline shaft friction plate, the external driving motor is started, and the wheel hub shell rotates under the drive of the external motor; if the switching relay is powered off, the driving friction plate is separated from the spline shaft friction plate under the action of the relay spring, and the wheel hub shell loses power and gradually stops rotating.

[0009] Furthermore, as the switching relay is powered off, the spring pushes the drive switching shaft, the linkage rod drives the spline shaft friction plate to separate from the drive friction plate, the switching shaft friction plate is docked with the screw shaft friction plate, and the gear on the hub drive shaft is meshed with the gear on the drive switching shaft, so that the external drive motor can drive the boss lifting screw.

[0010] Furthermore, driven by an external motor, the boss lifting screw rotates, the bevel screw nut seat begins to translate, and the lifting boss whose lower end bevel is close to the bevel screw nut seat begins to be pushed upward to translate, and the lifting boss automatically rises.

[0011] Furthermore, springs are provided around the lifting boss to connect to the inner wall of the hub shell. When the switching shaft friction plate is docked with the screw shaft friction plate, the external drive motor reverses, the bevel screw nut seat moves in the opposite direction, and the lifting boss begins to translate downward under the action of the springs around it, and the lifting boss completes the automatic descending action.

[0012] The method for automatically lifting a boss hub is characterized by comprising the following steps:

[0013] After the driving friction plate is connected with the spline shaft friction plate, the external driving motor is started and the wheel hub shell rotates under the drive of the external motor; if the switching relay is powered off, the driving friction plate and the spline shaft friction plate are separated under the action of the relay spring, and the wheel hub shell loses power and gradually stops rotating.

[0014] As the switching relay is powered off, the spring pushes the drive switching shaft, and the linkage rod drives the spline shaft friction plate to separate from the drive friction plate. The switching shaft friction plate is connected to the screw shaft friction plate, and the gear on the hub drive shaft meshes with the gear on the drive switching shaft, so that the external drive motor can drive the boss lifting screw.

[0015] Driven by an external motor, the boss lifting screw rotates, the inclined screw nut seat begins to translate, and the lifting boss whose lower end inclined surface is close to the inclined screw nut seat begins to be pushed upward and translate, and the lifting boss automatically rises.

[0016] Springs are arranged around the lifting boss to connect to the inner wall of the hub shell. When the friction plate of the switching shaft is connected to the friction plate of the screw shaft, the external drive motor reverses, and the inclined screw nut seat moves in the opposite direction. The lifting boss begins to translate downward under the action of the springs around it, and the lifting boss completes the automatic descending action.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the boss of the present invention automatically lifts and lowers the wheel hub, and the rotation of the wheel hub itself and the lifting and lowering of the boss only require the same external motor to drive, without the need for an additional motor; during the motor vehicle inspection process, the boss can be automatically raised and lowered, and the test vehicle does not need to leave the test equipment, thereby improving the test efficiency; the structure is compact and can be integrated inside the wheel hub to save space; the switching is controlled by a relay, and the operation is simple; during the switching process, the wheel hub will lose power and gradually stop, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the main structural schematic diagrams of the present invention;

[0019] Figure 2 This is the second schematic diagram of the main structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the switching relay of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-axis switching structure of the present invention.

[0022] In the figure: 1. lifting boss; 2. wheel hub housing; 3. switching relay; 4. motor; 5. wheel hub drive shaft; 6. drive shaft friction plate; 7. spline shaft friction plate; 8. drive switching shaft; 9. linkage rod; 10. drive spline shaft; 11. switching shaft friction plate; 12. screw shaft friction plate; 13. boss lifting screw; 14. bevel screw nut seat. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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 work are within the scope of protection of the present invention.

[0024] Embodiment 1

[0025] The boss automatic lifting hub includes a hub shell 2, a hub drive shaft 5, a drive shaft friction plate 6, a drive spline shaft 10, a spline shaft friction plate 7, a linkage rod 9, a drive switching shaft 8, a switching relay 3, a switching shaft friction plate 11, a boss lifting screw 13, a bevel screw nut seat 14, a lifting boss 1, and a screw shaft friction plate 12. The hub drive shaft 5 and the boss lifting screw 13 share the same motor 4 to drive.

[0026] There is a long spline groove inside the wheel hub shell 2, in which the driving spline shaft 10 is installed, and a spline shaft friction plate 7 is installed at the other end, which can be connected with the driving shaft friction plate 6; the driving shaft friction plate 6 is installed on the wheel hub driving shaft 5, and there is a gear on the wheel hub driving shaft 5 that rotates with the driving shaft, and the gear is meshed with the gear on the driving switching shaft 8; a switching relay 3 is provided at the end of the driving switching shaft 8 and is installed on the inner wall of the wheel hub shell 2; the driving switching shaft 8 is connected to the driving spline shaft 10 through a linkage rod 9; a switching shaft friction plate 11 is installed at the other end of the driving switching shaft 8 and is connected with the screw shaft friction plate 12; the boss lifting screw 13 is installed in the wheel hub shell 2, and the end screw seat is installed on the inner wall; the nut seat installed on the boss lifting screw 13 is a bevel screw nut seat 14, and the upper surface is a beveled surface connected to the lifting boss 1.

[0027] A long spline groove is installed on the inner wall of the hub shell 2, which is docked with the driving spline shaft 10. After the driving spline shaft 10 translates a certain distance, it can still stably transmit the power from the external driving motor 4; the docking of the driving friction plate and the spline shaft friction plate 7 can affect the starting and stopping of the driving spline shaft 10.

[0028] Embodiment 2

[0029] The method for automatically lifting a boss hub of the present invention comprises the following steps:

[0030] After the driving friction plate is connected with the spline shaft friction plate 7, the external driving motor 4 is started, and the hub shell 2 rotates under the drive of the external motor 4; if the switching relay 3 is powered off, the driving friction plate and the spline shaft friction plate 7 are separated under the action of the relay spring, and the hub shell 2 loses power and gradually stops rotating.

[0031] As the switching relay 3 is powered off, the spring pushes the drive switching shaft 8, and the linkage rod 9 drives the spline shaft friction plate 7 to separate from the drive friction plate. The switching shaft friction plate 11 is connected with the screw shaft friction plate 12, and the gear on the hub drive shaft 5 is meshed with the gear on the drive switching shaft 8, so that the external drive motor 4 can drive the boss lifting screw 13.

[0032] Driven by the external motor 4, the boss lifting screw 13 rotates, the bevel screw nut seat 14 begins to translate, and the lifting boss 1 whose lower end bevel is close to the bevel screw nut seat 14 begins to be pushed upward and translate, and the lifting boss 1 automatically rises.

[0033] Springs are arranged around the lifting boss 1 to connect to the inner wall of the hub housing 2. When the switching shaft friction plate 11 is docked with the screw shaft friction plate 12, the external drive motor 4 reverses, and the bevel screw nut seat 14 moves in the opposite direction. The lifting boss 1 begins to translate downward under the action of the springs around it, and the lifting boss 1 completes the automatic descending action.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the invention and are not intended to limit the present invention. Without departing from the novel spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. The boss automatically lifts the wheel hub, characterized in that: The invention comprises a wheel hub shell (2), a wheel hub drive shaft (5), a drive shaft friction plate (6), a drive spline shaft (10), a spline shaft friction plate (7), a linkage rod (9), a drive switching shaft (8), a switching relay (3), a switching shaft friction plate (11), a boss lifting screw (13), a bevel screw nut seat (14), a lifting boss (1), and a screw shaft friction plate (12); the wheel hub drive shaft (5) and the boss lifting screw (13) are driven by a common motor (4).

2. The boss automatic lifting hub according to claim 1, characterized in that: The hub shell (2) has a long spline groove inside, the driving spline shaft (10) is installed therein, and the spline shaft friction plate (7) is installed at the other end, which can be connected with the driving shaft friction plate (6); the driving shaft friction plate (6) is installed on the hub driving shaft (5), and the hub driving shaft (5) has a gear that rotates with the driving shaft, and the gear is meshed with the gear on the driving switching shaft (8); the switching relay (3) is installed at the end of the driving switching shaft (8) on the hub shell (2 ) inner wall; the drive switching shaft (8) is connected to the drive spline shaft (10) through the linkage rod (9); the other end of the drive switching shaft (8) is equipped with the switching shaft friction plate (11) and is connected to the screw shaft friction plate (12); the boss lifting screw (13) is installed in the wheel hub shell (2), and the end screw seat is installed on the inner wall; the nut seat installed on the boss lifting screw (13) is the bevel screw nut seat (14), and the upper surface is a bevel connected to the lifting boss (1).

3. The boss automatic lifting hub according to claim 2, characterized in that: A long spline groove is installed on the inner wall of the hub shell (2) and docked with the driving spline shaft (10). After the driving spline shaft (10) translates a certain distance, it can still stably transmit power from the external driving motor (4); the docking of the driving friction plate and the spline shaft friction plate (7) can affect the starting and stopping of the driving spline shaft (10).

4. The boss automatic lifting hub according to claim 2, characterized in that: After the driving friction plate is butted against the spline shaft friction plate (7), the external driving motor (4) is started, and the hub shell (2) is driven to rotate by the external motor (4); If the switching relay (3) is powered off, the driving friction plate and the spline shaft friction plate (7) are separated under the action of the relay spring, and the corresponding wheel hub shell (2) loses power and gradually stops rotating.

5. The boss automatic lifting hub according to claim 2, characterized in that As the switching relay (3) is powered off, the spring pushes the drive switching shaft (8), the linkage rod (9) drives the spline shaft friction plate (7) to separate from the drive friction plate, the switching shaft friction plate (11) is connected to the screw shaft friction plate (12), and the gear on the wheel hub drive shaft (5) is meshed with the gear on the drive switching shaft (8), so that the external drive motor (4) can drive the boss lifting screw (13).

6. The boss automatic lifting hub according to claim 2, characterized in that: Driven by an external motor (4), the boss lifting screw (13) rotates, the inclined screw nut seat (14) begins to translate, and the lifting boss (1) whose lower end inclined surface is closely attached to the inclined screw nut seat (14) begins to be pushed upward to translate, and the lifting boss (1) automatically rises.

7. The boss automatic lifting hub according to claim 2, characterized in that: The lifting boss (1) is surrounded by springs connected to the inner wall of the hub shell (2). When the switching shaft friction plate (11) is connected to the screw shaft friction plate (12), the external drive motor (4) is reversed, and the inclined screw nut seat (14) moves in the opposite direction. The lifting boss (1) starts to translate downward under the action of the springs around it, and the lifting boss (1) completes the automatic descending action.

8. The method for automatically lifting a boss hub according to any one of claims 1 to 7, characterized in that The following steps are involved: After the driving friction plate is butted against the spline shaft friction plate (7), the external driving motor (4) is started, and the wheel hub housing (2) is driven to rotate by the external motor (4); If the switching relay (3) is powered off, the friction plate is driven to separate from the spline shaft friction plate (7) under the action of the relay spring, and the hub housing (2) loses power and gradually stops rotating; As the switching relay (3) is powered off, the spring pushes the drive switching shaft (8), the linkage rod (9) drives the spline shaft friction plate (7) to separate from the drive friction plate, the switching shaft friction plate (11) and the screw shaft friction plate (12) are connected, and the gear on the hub drive shaft (5) is meshed with the gear on the drive switching shaft (8), so that the external drive motor (4) can drive the boss lifting screw (13); Under the drive of the external motor (4), the boss lifting screw (13) rotates, the inclined screw nut seat (14) begins to translate, and the lifting boss (1) whose lower end inclined surface is closely attached to the inclined screw nut seat (14) begins to be pushed upward and translate, and the lifting boss (1) automatically rises; Springs are arranged around the lifting boss (1) to connect to the inner wall of the hub housing (2). When the switching shaft friction plate (11) is connected to the screw shaft friction plate (12), the external drive motor (4) is reversed, and the inclined screw nut seat (14) moves in the opposite direction. The lifting boss (1) starts to translate downward under the action of the springs around it, and the lifting boss (1) completes the automatic descending action.

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