Special motor for testing vehicle chassis

Abstract

The utility model discloses a special motor for testing a vehicle chassis, which belongs to the field of motors and comprises a motor body fixedly mounted on a chassis dynamometer frame through a first bolt, a mounting seat is mounted on the outer wall of the motor body, and an anti-falling structure is mounted at the corner of the end face of the mounting seat. The anti-falling structure comprises a fixing cylinder and two fixing blocks installed on the end face of the installation base. By arranging an anti-falling structure, a spring is used for driving a trapezoidal clamping block to press the end face of an L-shaped plate, and a nut sleeve sleeves the outside of a hexagon nut, so that the function of fixing the position of the hexagon nut is realized, and the problems that most of existing motors are mounted on a rack of a chassis dynamometer through matching of bolts and nuts, the dynamometer vibrates seriously during chassis testing, and the testing efficiency is low are solved. The problem that the bolt and the nut for fixing the motor are loosened after a long time is solved, so that the hexagon nut cannot be loosened under the vibration condition of the dynamometer, and the installation stability of the motor body is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically a special motor for testing vehicle chassis. Background Technology

[0002] A motor is a device that converts electrical energy into mechanical energy. It uses a current-carrying coil to generate a rotating magnetic field, which acts on the rotor to form a magnetoelectric torque. Motors are classified into DC motors and AC motors according to the power source they use. Most motors in the power system are AC motors, which can be synchronous motors or asynchronous motors. A motor mainly consists of a stator and a rotor. The direction of the force on a current-carrying conductor in a magnetic field is related to the direction of the current and the direction of the magnetic field lines. The working principle of a motor is that the magnetic field exerts a force on the current, causing the motor to rotate.

[0003] Automotive chassis are typically tested on a chassis dynamometer. The chassis dynamometer requires a motor for drive. Most existing motors are mounted on the chassis dynamometer frame using bolts and nuts. During chassis testing, the dynamometer itself vibrates significantly, which can cause the bolts and nuts securing the motor to loosen over time, reducing the motor's installation stability.

[0004] Therefore, this utility model provides a special motor for vehicle chassis testing to solve the above problems. Utility Model Content

[0005] This utility model provides a special motor for vehicle chassis testing, aiming to solve the problems mentioned in the background art, where existing motors are mostly installed on the frame of a chassis dynamometer using bolts and nuts. During chassis testing, the dynamometer itself vibrates greatly, which over time can cause the bolts and nuts that fix the motor to loosen.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special motor for vehicle chassis testing, comprising a motor body fixedly mounted on the chassis dynamometer frame by a first bolt, a mounting base mounted on the outer wall of the motor body, and an anti-detachment structure mounted at the corner of the end face of the mounting base;

[0007] The anti-detachment structure includes a fixed cylinder and two fixed blocks mounted on the end face of the mounting base. A trapezoidal locking block is slidably mounted on each fixed block via a groove. A pull rod is mounted on the side wall of each trapezoidal locking block, and a spring is sleeved on the outer wall of the pull rod, located on the side wall of the trapezoidal locking block. An L-shaped plate is symmetrically mounted on the end face of the fixed cylinder, and a nut sleeve is rotatably mounted on the fixed cylinder via a circular groove. By setting up the anti-detachment structure, the trapezoidal locking block is driven by the spring to press against the end face of the L-shaped plate, and the nut sleeve covers the outside of the hexagonal nut, thus achieving the function of fixing the position of the hexagonal nut. This avoids the problem that existing motors are mostly mounted on the chassis dynamometer frame using bolts and nuts, where the dynamometer itself vibrates significantly during chassis testing, which over time can cause the bolts and nuts fixing the motor to loosen. This structure prevents the hexagonal nut from loosening under the vibration of the dynamometer.

[0008] Preferably, a rear cover is installed on the outer wall of the motor body, the rear cover has an opening and a limiting groove, a filter screen is connected to the inner wall of the rear cover, a connecting plate adapted to the limiting groove is installed on the outer wall of the filter screen, and a second bolt is installed on the rear cover through a through hole.

[0009] Preferably, the chassis dynamometer frame has bolt holes for installing the first bolt, the first bolt is threaded with a hexagonal nut, and the inner cavity of the nut sleeve is similarly matched with the hexagonal nut.

[0010] Preferably, the end of the pull rod away from the trapezoidal block passes through the fixing block and is slidably connected to the fixing block.

[0011] Preferably, the end of the spring away from the trapezoidal block is connected to the fixing block, and the side of the trapezoidal block away from the pull rod is an inclined surface.

[0012] Preferably, multiple sets of openings and limiting grooves are provided and distributed in a circular array on the back cover, and the openings and limiting grooves are interconnected.

[0013] Preferably, the filter screen is symmetrically equipped with hand-held parts, and the outer wall of the connecting plate is provided with threaded holes for connecting the second bolt.

[0014] Beneficial effects: By setting up an anti-detachment structure, a trapezoidal locking block driven by a spring presses down on the end face of the L-shaped plate, and a nut sleeve covers the outside of the hexagonal nut, thus achieving the function of fixing the position of the hexagonal nut. This avoids the problem that most existing motors are installed on the chassis dynamometer frame using bolts and nuts. During chassis testing, the dynamometer itself vibrates greatly, which over time can cause the bolts and nuts fixing the motor to loosen. This prevents the hexagonal nut from loosening under the vibration of the dynamometer, thus improving the installation stability of the motor body. Attached Figure Description

[0015] Figure 1A three-dimensional structural diagram of a special motor for testing vehicle chassis;

[0016] Figure 2 This is a partial structural diagram of a special motor for testing vehicle chassis.

[0017] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a special motor for testing vehicle chassis.

[0018] Figure 4 A cross-sectional and disassembled schematic diagram of the anti-detachment structure of a special test motor for vehicle chassis;

[0019] Figure 5 This is a partial disassembled structural diagram of a special motor for testing vehicle chassis.

[0020] In the diagram: 1. Chassis dynamometer frame; 11. Bolt hole; 2. First bolt; 21. Hexagonal nut; 3. Motor body; 31. Mounting base; 32. Rear cover; 321. Opening; 322. Limiting groove; 323. Through hole; 4. Anti-detachment structure; 41. Fixing block; 411. Slide groove; 42. Trapezoidal locking block; 43. Pull rod; 44. Spring; 45. Fixing cylinder; 451. Circular groove; 46. L-shaped plate; 47. Nut sleeve; 5. Filter screen; 51. Handhold; 6. Connecting plate; 61. Threaded hole; 7. Second bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] This embodiment provides a special motor for vehicle chassis testing, such as... Figure 1-5 As shown, the test motor includes a motor body 3 fixedly mounted on the chassis dynamometer frame 1 by a first bolt 2. A mounting base 31 is mounted on the outer wall of the motor body 3, and an anti-detachment structure 4 is installed at the corner of the end face of the mounting base 31.

[0024] The anti-detachment structure 4 includes a fixed cylinder 45 and two fixed blocks 41 installed on the end face of the mounting base 31. The fixed blocks 41 are slidably mounted with trapezoidal locking blocks 42 through the sliding groove 411. A pull rod 43 is installed on the side wall of the trapezoidal locking block 42. A spring 44 is sleeved on the outer wall of the pull rod 43 and located on the side wall of the trapezoidal locking block 42. An L-shaped plate 46 is symmetrically installed on the end face of the fixed cylinder 45. A nut sleeve 47 is rotatably mounted on the fixed cylinder 45 through the circular groove 451.

[0025] In use, the first bolt 2 is placed in the bolt hole 11, preventing the chassis dynamometer frame 1 from moving. The mounting base 31 is fixed to the chassis dynamometer frame 1 using the first bolt 2 and the hexagonal nut 21. The nut sleeve 47 is driven to rotate in the circular groove 451, aligning the hexagonal inner cavity of the nut sleeve 47 with the hexagonal corner of the hexagonal nut 21. The fixing cylinder 45 drives the two L-shaped plates 46 to move downwards towards the hexagonal nut 21. The upper end of the first bolt 2 passes through the nut sleeve 47 and the inner cavity of the fixing cylinder 45. The two L-shaped plates 46 slide on the inclined surfaces of the two trapezoidal blocks 42, pushing the trapezoidal blocks 42 to compress the spring 44. When the fixing... After the cylinder 45 slides over the inclined surface of the trapezoidal locking block 42, the nut sleeve 47 slides down and fits onto the outside of the hexagonal nut 21. Under the reset action, the spring 44 pushes the trapezoidal locking block 42 back into place, and the trapezoidal locking block 42 presses against the end face of the L-shaped plate 46, thus achieving the function of fixing the position of the hexagonal nut 21. This avoids the problem that most existing motors are installed on the frame of the chassis dynamometer using bolts and nuts. During chassis testing, the dynamometer itself vibrates a lot, which can cause the bolts and nuts fixing the motor to loosen over time. This prevents the hexagonal nut 21 from loosening under the vibration of the dynamometer, thus improving the installation stability of the motor body 3.

[0026] In this embodiment, the chassis dynamometer frame 1 is provided with bolt holes 11 for installing the first bolt 2. The first bolt 2 is threaded with a hexagonal nut 21, and the inner cavity of the nut sleeve 47 is similarly matched with the hexagonal nut 21.

[0027] The inner cavity of the nut sleeve 47 is fitted with the hexagonal nut 21, so that the nut sleeve 47 can be firmly fitted around the outside of the hexagonal nut 21, restricting the movement of the hexagonal nut 21 and realizing the function of preventing the hexagonal nut 21 from falling off.

[0028] In this embodiment, the end of the pull rod 43 away from the trapezoidal block 42 passes through the fixing block 41 and is slidably connected to the fixing block 41; the end of the spring 44 away from the trapezoidal block 42 is connected to the fixing block 41, and the side of the trapezoidal block 42 away from the pull rod 43 is an inclined surface;

[0029] In this design, the trapezoidal locking block 42 has an inclined surface on the side away from the pull rod 43. When installing the L-shaped plate 46, the L-shaped plate 46 can easily slide over the trapezoidal locking block 42, thereby quickly fixing the L-shaped plate 46 and improving the installation efficiency of the anti-detachment structure 4.

[0030] Example 2

[0031] Unlike Embodiment 1, the dust is relatively large in the vehicle chassis testing site, and the existing motor filter screen is prone to clogging after long-term use. However, most of the filter screens are fixedly installed on the motor, which is inconvenient to quickly disassemble, clean and replace the filter screen, resulting in low cleaning and replacement efficiency. Therefore, a rear cover 32 is installed on the outer wall of the motor body 3. The rear cover 32 has an opening 321 and a limiting groove 322. The inner wall of the rear cover 32 is connected to a filter screen plate 5. The outer wall of the filter screen plate 5 is installed with a connecting plate 6 that matches the limiting groove 322. The rear cover 32 is installed with a second bolt 7 through a through hole 323.

[0032] In use, the user removes the second bolt 7 from the threaded hole 61, rotates the filter plate 5 through the handheld part 51, and drives multiple connecting plates 6 to rotate synchronously to the opening 321. The filter plate 5 can then be removed for cleaning or replacement. After cleaning or replacement, the filter plate 5 drives multiple connecting plates 6 into the opening 321. Rotating the filter plate 5 drives the connecting plates 6 into the limiting groove 322. The second bolt 7 is threaded into the threaded hole 61 through the through hole 323, thus fixing the filter plate 5 in place. This avoids the problem that existing motor filters are prone to clogging after long-term use, but most filters are fixedly installed on the motor, making it inconvenient to quickly disassemble, clean, and replace them. This improves the cleaning and replacement efficiency of the filter plate 5.

[0033] In this embodiment, multiple sets of openings 321 and limiting grooves 322 are provided and are distributed in a ring array on the back cover 32. The openings 321 and limiting grooves 322 are interconnected.

[0034] By setting multiple sets of limiting grooves 322 and corresponding connecting plates 6, the installation stability of the filter screen plate 5 can be improved.

[0035] In this embodiment, a handheld part 51 is symmetrically installed on the filter screen plate 5, and a threaded hole 61 for connecting the second bolt 7 is opened on the outer wall of the connecting plate 6.

[0036] The handheld part 51 allows for easy rotation of the filter screen 5 within the rear cover 32 cavity, facilitating quick disassembly and installation of the filter screen 5.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A motor special for chassis test of vehicle, comprising a motor body (3) fixedly installed on a chassis dynamometer frame (1) through first bolts (2), an installation seat (31) is installed on the outer wall of the motor body (3), and an anti-off structure (4) is installed at the end face corner of the installation seat (31). Its characteristics are: The anti-detachment structure (4) includes a fixed cylinder (45) and two fixed blocks (41) installed on the end face of the mounting base (31). The fixed blocks (41) are slidably mounted with trapezoidal locking blocks (42) through a sliding groove (411). A pull rod (43) is installed on the side wall of the trapezoidal locking block (42). A spring (44) is sleeved on the outer wall of the pull rod (43) and located on the side wall of the trapezoidal locking block (42). An L-shaped plate (46) is symmetrically installed on the end face of the fixed cylinder (45). A nut sleeve (47) is rotatably installed on the fixed cylinder (45) through a circular groove (451).

2. Motor for chassis testing of vehicles, according to claim 1, characterized in that: The motor body (3) has a rear cover (32) installed on its outer wall. The rear cover (32) has an opening (321) and a limiting groove (322). The inner wall of the rear cover (32) is connected to a filter screen plate (5). The outer wall of the filter screen plate (5) is equipped with a connecting plate (6) that is compatible with the limiting groove (322). The rear cover (32) has a second bolt (7) installed through a through hole (323).

3. The chassis-dynamometer-only vehicle motor of claim 1, wherein: The chassis dynamometer frame (1) has a bolt hole (11) for installing the first bolt (2). The first bolt (2) is threaded with a hexagonal nut (21). The inner cavity of the nut sleeve (47) is similarly matched with the hexagonal nut (21).

4. The chassis-dynamometer-only vehicle motor of claim 1, wherein: The end of the pull rod (43) away from the trapezoidal block (42) passes through the fixing block (41) and is slidably connected to the fixing block (41).

5. The chassis-dynamometer-only vehicle motor of claim 1, wherein: The end of the spring (44) away from the trapezoidal block (42) is connected to the fixed block (41), and the side of the trapezoidal block (42) away from the pull rod (43) is an inclined surface.

6. The chassis-dynamometer-only vehicle motor of claim 2, wherein: Multiple sets of openings (321) and limiting grooves (322) are provided and are arranged in a ring array on the back cover (32). The openings (321) and limiting grooves (322) are interconnected.

7. The chassis-dynamometer-only vehicle motor of claim 2, wherein: The filter screen (5) is symmetrically equipped with a hand-held part (51), and the outer wall of the connecting plate (6) is provided with a threaded hole (61) for connecting the second bolt (7).

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