Safe and efficient chassis dynamometer guard rail

Abstract

The invention belongs to the technical field of automobile rack performance test auxiliary equipment, and particularly relates to a safe and efficient chassis dynamometer protective guard which comprises two stand columns used for supporting the protective guard, each stand column is provided with a reversing pulley, the lower ends of the stand columns are installed on a base, the protective guard is provided with a tripping motor, and the tripping motor is arranged on the base. The two ends of the tripping rope are connected with the two bases respectively, the tripping rope is connected with the tripping motor after passing through the reversing pulley, the reset motor is arranged on the ground, one end of the reset rope is connected with the upper end of the protective fence, the lower end of the reset rope is connected with the reset motor, and the controller is in electric signal connection with the tripping motor and the reset motor. The chassis dynamometer protective guard of the technical scheme can adapt to vehicles with different widths, provides enough distance for testers, ensures that the testers conveniently enter and exit the vehicles, can be automatically opened in emergency, provides enough space for emergency and escape of the testers, and improves the emergency efficiency in emergency.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile bench performance test auxiliary equipment, and in particular relates to a safe and efficient chassis dynamometer guardrail. Background Art

[0002] Chassis dynamometer is a common equipment for vehicle bench performance testing and is also one of the indispensable equipment. For example, vehicle power, economy, emission and other tests are all completed on chassis dynamometer. Due to different test conditions, the speed is also different. The fastest speed can reach 160km / h or even higher. Therefore, the fast rotating wheels are very dangerous. Therefore, chassis dynamometers are equipped with guardrails to prevent objects from splashing and causing injuries. Because the width of the chassis dynamometer is fixed, and the wheelbases of different vehicles are different, the doors of some wider vehicles are blocked by the guardrails and cannot be opened smoothly.

[0003] Most of the existing chassis dynamometer guardrails are fixedly installed, installed on the chassis dynamometer floor through columns, and the distance between them and the dynamometer roller is fixed. Fixed guardrails cannot adapt to vehicles of different widths, resulting in some wider vehicle doors being blocked when opening and unable to open completely. The narrow space makes it difficult for test personnel to get on and off the vehicle. In the event of an emergency (the test vehicle may catch fire when the test conditions are severe), it will affect the emergency escape efficiency of the test personnel and may lead to unimaginable consequences. Summary of the invention

[0004] The purpose of the present invention is to provide a safe and efficient chassis dynamometer guardrail that can adapt to vehicles of different widths, will not block the opening of the vehicle door, and will not affect the emergency escape efficiency of the test personnel, so as to solve the problems existing in the background technology.

[0005] To achieve the above objectives, this application is implemented through the following technical solutions:

[0006] A safe and efficient chassis dynamometer guardrail comprises a guardrail, two upright posts for supporting the guardrail, each upright post is provided with a reversing pulley, the lower end of each upright post is mounted on a base, a tripping motor is provided on the guardrail between the two upright posts, two ends of a tripping rope are respectively connected to the base, the tripping rope is connected to the output shaft of the tripping motor after passing through the reversing pulley, a reset motor is arranged on the ground, one end of the reset rope is connected to the upper end of the guardrail, the lower end of the reset rope is connected to the output shaft of the reset motor, and a controller is respectively connected to the tripping motor and the reset motor with electrical signals.

[0007] Furthermore, the reversing pulley is arranged at the center position of the height direction of the guardrail, and the position of the tripping motor is lower than the height of the reversing pulley.

[0008] Furthermore, a support column extending into the ground is arranged below the base, and the upper end of the support column is fixedly connected to the base.

[0009] Furthermore, the two bases have the same structure.

[0010] Furthermore, the base includes an upper base plate, a lower base plate and side base plates. The lower base plate is fixedly connected to the side base plates. The upper base plate is hinged to the rear side of the lower base plate. A spring is provided between the upper base plate and the lower base plate. A lock mounting slot is provided on the upper base plate. The lock is installed in the lock mounting slot through a rotating shaft. The release rope is connected to the lock. A lock tongue protruding forward is provided on the front side of the lower base plate. The lock tongue and the lock are movably engaged. The lower end of the column is fixed to the upper base plate.

[0011] Furthermore, the lock buckle includes a connecting portion and a lock hook fixedly arranged below the connecting portion, and the lock hook is engaged with the lock tongue.

[0012] Furthermore, a limiting protrusion extending toward the base upper plate is provided on the side surface of the base side plate opposite to the base upper plate, and the front side of the limiting protrusion is an inclined surface, which interferes with the movement trajectory of the base upper plate.

[0013] Furthermore, an open slot is provided on the rear side of the upper plate of the base, and the lower end of the limiting device is fixed to the lower plate of the base after passing through the open slot.

[0014] Furthermore, the angle between the axial center line of the limiting device and the axial center line of the column is an acute angle.

[0015] Furthermore, the axial center line of the limiting device is not parallel to the side plate of the base.

[0016] The beneficial effects of the present invention are:

[0017] The chassis dynamometer guardrail of the present technical solution can adapt to vehicles of different widths and provide sufficient distance for test personnel to ensure convenient entry and exit of the vehicle. In an emergency, the guardrail can be automatically opened to provide sufficient space for test personnel to respond to emergencies and escape, thereby improving emergency response efficiency in emergencies. The operation is simple, efficient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the chassis dynamometer guardrail of the present invention.

[0019] Figure 2 It is a schematic diagram of the bottom connection of the chassis dynamometer guardrail of the present invention.

[0020] Description of reference numerals:

[0021] 1. Guardrail; 2. Trip motor; 3. Reversing pulley; 4. Trip rope; 5. Controller; 6. Base; 7. Reset motor; 8. Reset rope; 9. Column; 10. Base upper plate; 11. Lock mounting slot; 12. Base lower plate; 13. Lock; 14. Lock tongue; 15. Spring; 16. Base side plate; 17. Limit device. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0023] In the technical solution of the present application, all words indicating directions do not indicate actual positions, but are only used to clearly illustrate the technical solution, and those skilled in the art may make corresponding choices according to actual needs.

[0024] See also Figure 1 and Figure 2 As shown, the present application provides a safe and efficient chassis dynamometer guardrail, including a guardrail 1. The present application has no special restrictions on the guardrail, which can be made of a frame and wire mesh or steel bars arranged in the frame. The specific shape is designed by technical personnel in this field according to the actual location and needs.

[0025] The guardrail 1 of the present application is supported by two columns 9, the upper parts of the two columns 9 are fixedly connected to the guardrail 1, the lower ends of the two columns 9 are respectively installed on a base 6, and the structures of the two bases are the same.

[0026] like Figure 2 As shown, the base 6 of the present application includes a base upper plate 10, which is an overall rectangular plate structure, an open groove is provided on the rear side of the base upper plate (not shown in the figure), and a lock buckle mounting slot 11 is provided on the upper surface of the base upper plate near the front side. The lock buckle mounting slot 11 is overall frame-shaped, and a rotating shaft mounting hole (not shown in the figure) is provided on each side wall of the lock buckle mounting slot 11. The lock buckle 13 is installed in the lock buckle mounting slot 11 through the rotating shaft, and the lock buckle 13 can rotate with the rotating shaft, and the upper crossbeam of the lock buckle mounting slot 11 serves to limit the lock buckle 13.

[0027] The lock hook 13 of the present application includes a connecting part and a lock hook fixedly arranged below the connecting part. The connecting part is a rectangular structure as a whole, and the lock hook is fixed below the connecting part, wherein the rotating shaft passes through the rear end of the connecting part. When the front end of the connecting part is lifted upward, the lock hook moves outward and upward in an arc shape. When the connecting part is pressed downward, the connecting part drives the lock hook to move in the opposite direction under the limitation of the cross beam on the lock buckle installation slot.

[0028] The base 6 of the present application includes a base lower plate 12 and a base side plate 16. The base side plate 16 is fixedly connected to the base lower plate 12. A support column extending into the ground is provided below the base and is fixedly connected to the ground. The specific fixing method is the existing technology, and the upper end surface of the support column is fixedly connected to the lower surface of the base lower plate.

[0029] In the technical solution of the present application, the rear side of the base lower plate 12 is provided with a side convex edge (not shown in the figure) extending upward, so that the base lower plate is L-shaped as a whole, and the side convex edge and the base upper plate are hingedly connected by a hinge device, so that a set distance is maintained between the base upper plate 10 and the base lower plate 12, and a spring 15 is provided between the base upper plate 10 and the base lower plate 12. When the guardrail is not turned outward, the spring 15 remains in a compressed state. In addition, a small gap is maintained between the side of the base upper plate and the side plate of the base.

[0030] In the present application, a forward-protruding locking tongue 14 is provided on the front side of the lower plate of the base, and the locking tongue is used to engage with the locking hook. The specific engagement and disengagement are described below.

[0031] In the present application, a limiting protrusion extending toward the direction of the base upper plate is arranged on the side surface opposite to the base side plate and the base upper plate, and the front side of the limiting protrusion is an inclined surface, which interferes with the movement trajectory of the base upper plate. Specifically, when the guardrail is flipped outward, the base upper plate flips outward, and when it is flipped to a certain angle, the limiting protrusion blocks the base upper plate to prevent it from further flipping outward. When the limiting protrusion is limited by the base upper plate, the surface of the limiting protrusion that contacts the upper surface of the base upper plate is an inclined surface, so as to limit the base upper plate to the maximum extent.

[0032] In the present application, a limiting device 17 is also provided on the base, the lower end of which is fixed to the lower plate of the base, and the limiting device is located in the opening groove of the upper plate of the base, so that when the upper plate of the base is turned outward to a certain angle, the limiting device is used to limit the upper plate of the base at the same time, so as to prevent the upper plate of the base from being twisted due to the weight of the guardrail. The angle between the axial center line of the limiting device of the present application and the axial center line of the column is an acute angle, and at the same time, the axial center line of the limiting device is not parallel to the side plate of the base, and the limiting device is in contact with the side convex edge of the lower plate of the base, which plays a role in fixing the limiting device.

[0033] In the present application, a reversing pulley 3 is arranged on each column 9, and the reversing pulley 3 is arranged at the center position of the height direction of the guardrail or above the center position to improve the efficiency of the tripping. The lower end of the column is vertically fixed to the upper plate of the base, and a tripping motor 2 is installed between the two columns of the guardrail, and the installation position of the tripping motor 2 is lower than the height of the reversing pulley 3. The two ends of the tripping rope 4 are respectively connected to the outer end of the connecting part of a lock buckle 13, and the tripping rope is connected to the output shaft of the tripping motor after passing through the reversing pulley. When the tripping motor rotates forward or reverse respectively, it is used to tighten the tripping rope or loosen the tripping rope, and when the tripping rope is tightened, the tripping rope between the reversing pulley and the connecting part is at an acute angle to the horizontal axis of the connecting part. Such a pulling force generates an outward force at the lock hook, which facilitates the disengagement of the lock hook and the lock tongue.

[0034] In the present application, the reset motor 7 is arranged on the ground, the upper end of the reset rope 8 is connected to the upper end of the guardrail, and the lower end of the reset rope 8 is connected to the output shaft of the reset motor, which is used to reset the guardrail turned outward, and the reset rope and the trip rope are respectively located on both sides of the guardrail. The controller 5 is respectively connected to the trip motor and the reset motor electrical signal.

[0035] Working principle:

[0036] The tripping of the present application includes two modes, one is manual control and the other is automatic control.

[0037] Manual control tripping mode:

[0038] When there is insufficient space between the guardrail and the vehicle and more space is needed, the controller can be manually operated to control the action of the tripping motor. The tripping motor pulls the tripping rope to drive the lock to rotate upward and outward in an arc and disengage the lock tongue. When tripping, the upper plate of the base is subjected to the elastic force of the spring, and the upper plate of the base and the guardrail flip outward as a whole. When flipped to a certain angle, the upper plate of the base is limited by the limit device and the limit protrusion. When the controller controls the action of the tripping motor, the reset motor is also controlled to release the reset rope to adapt to the flipping of the guardrail.

[0039] Automatic control tripping mode:

[0040] The controller integrates the chassis dynamometer emergency stop signal and speed signal. When the controller receives the dynamometer emergency stop signal and speed signal (judged that the vehicle speed is 0) during the test, the controller can act automatically and trip immediately. The tripping action is the same as the manual control tripping method.

[0041] The reset control mode is:

[0042] The manual operation controller controls the action of the reset motor. The reset motor pulls the reset rope to drive the guardrail to flip inward. Under the pulling force of the reset rope, the upper plate of the base compresses the spring. At the same time, the lock hook rotates in the opposite direction of the tripping, rotates to the bottom of the lock tongue and engages with the lock tongue. The reset motor stops and the reset is completed.

[0043] The above are preferred implementation modes of the present invention. The above show and describe the basic principles of the present invention and the 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 for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall 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. A safe and efficient chassis dynamometer guardrail, characterized in that: It includes a guardrail, two columns for supporting the guardrail, a reversing pulley is arranged on each column, the lower end of each column is installed on a base, a tripping motor is arranged on the guardrail between the two columns, both ends of the tripping rope are respectively connected to the base, the tripping rope is connected to the output shaft of the tripping motor after passing through the reversing pulley, the reset motor is arranged on the ground, one end of the reset rope is connected to the upper end of the guardrail, the lower end of the reset rope is connected to the output shaft of the reset motor, and the controller is respectively connected to the tripping motor and the reset motor electrical signal.

2. The safe and efficient chassis dynamometer guardrail according to claim 1 is characterized in that: The reversing pulley is arranged at the center position of the height direction of the guardrail, and the position of the tripping motor is lower than the height of the reversing pulley.

3. The safe and efficient chassis dynamometer guardrail according to claim 1, characterized in that: A support column extending into the ground is arranged below the base, and the upper end of the support column is fixedly connected to the base.

4. The safe and efficient chassis dynamometer guardrail according to claim 1, characterized in that: The two bases have the same structure.

5. The safe and efficient chassis dynamometer guardrail according to claim 1, characterized in that: The base includes an upper base plate, a lower base plate and side base plates. The lower base plate is fixedly connected to the side base plates. The upper base plate is hinged to the rear side of the lower base plate. A spring is provided between the upper base plate and the lower base plate. A lock mounting slot is provided on the upper base plate. The lock is installed in the lock mounting slot through a rotating shaft. The release rope is connected to the lock. A lock tongue protruding forward is provided on the front side of the lower base plate. The lock tongue and the lock are movably engaged. The lower end of the column is fixed to the upper base plate.

6. The safe and efficient chassis dynamometer guardrail according to claim 5, characterized in that: The lock buckle comprises a connecting portion and a lock hook fixedly arranged below the connecting portion, and the lock hook is engaged with the lock tongue.

7. The safe and efficient chassis dynamometer guardrail according to claim 5, characterized in that: A limiting protrusion extending toward the base upper plate is arranged on the side surface of the base side plate opposite to the base upper plate, and the front side of the limiting protrusion is an inclined surface, which interferes with the movement trajectory of the base upper plate.

8. The safe and efficient chassis dynamometer guardrail according to claim 5, characterized in that: An open slot is arranged on the rear side of the upper plate of the base, and the lower end of the limiting device is fixed on the lower plate of the base after passing through the open slot.

9. The safe and efficient chassis dynamometer guardrail according to claim 8, characterized in that: The angle between the axial center line of the limiting device and the axial center line of the column is an acute angle.

10. The safe and efficient chassis dynamometer guardrail according to claim 9, characterized in that: The axial center line of the limiting device is not parallel to the side plate of the base.

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