Chassis dynamometer test vehicle emergency rapid removal device

Abstract

The invention discloses a chassis dynamometer test vehicle emergency rapid removal device. The device comprises a telescopic arm, a rapid removal clamping device bearing body, a cross arm, a winch, a cable and a limiting assembly. The two sides of each bearing body of the rapid removing and clamping device are in sliding connection with telescopic arms, the telescopic arms can be axially pulled to adapt to different wheel tracks, cross arms are connected with the two bearing bodies through tapered roller bearings and positioning pins to adjust the distance, fixed pulleys are fixed to the outer sides of the bearing bodies, the bearing bodies are connected with an outdoor winch through cables, and the limiting assemblies achieve contraction and locking of the device. The winch winds the cable to drive the device to clamp rear wheels of the vehicle and drags the rear wheels out of the environment bin. According to the device, the problems of arrangement, signal and cost of an existing AGV are solved, the emergency removal stability and universality are improved, and the safety of personnel and equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicle chassis dynamometer test matching equipment, in particular to a chassis dynamometer test vehicle emergency quick removal device. BACKGROUND

[0002] During the extreme condition test of new energy vehicles on a chassis dynamometer, extreme situations such as smoking and fire may be caused by overcharging, short circuit or mechanical failure of the battery. Due to the closed space of the environmental cabin and the mechanical constraints of the dynamometer on the vehicle and the self-locking parking of the vehicle, the traditional vehicle removal method is inefficient and delays rescue. Therefore, an emergency vehicle removal system is urgently needed, which is matched with a traction device to quickly transfer the vehicle to an isolation area to ensure personnel safety and reduce the risk of equipment damage. This technology needs to be compatible with different vehicle models and meet safety standards such as explosion-proof and fireproof.

[0003] The currently commonly used vehicle quick removal device is generally composed of an electric control module, a driving wheel and a lifting platform. The technical solution uses wireless transmission or ground laid magnetic stripe to guide the control of the AGV small car to drill into the vehicle bottom, and uses the lifting platform to lift the target vehicle to remove the vehicle from the environmental cabin. The disadvantages of the prior art are: the existing vehicle quick removal device - AVG small car has serious signal interference in the closed environmental cabin, poor performance stability, and cannot stably execute the corresponding emergency disposal steps to remove the vehicle in emergency situations. The existing built-in chassis dynamometer environmental cabin has limited internal space, making it difficult to arrange the AVG small car, and the modification cost is high. The AVG small car relies on the ground laid guide magnetic stripe, which needs to be laid on the existing built-in chassis dynamometer environmental cabin. Due to the harsh and complex environment, the ground magnetic stripe is easily damaged during loading and preparation, and cannot be guaranteed to be effective and intact for a long time, resulting in high maintenance cost. Due to the different sizes of existing built-in chassis dynamometers and the different specifications of test vehicles, the use of AVG small cars has limitations. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a chassis dynamometer test vehicle emergency quick removal device, which optimizes and improves the existing vehicle quick removal device - AVG small car, which has great difficulty in space arrangement, unstable performance in special environments, cannot be flexibly adjusted according to the vehicle and hub specifications, and has high modification and maintenance cost.

[0005] The technical problem to be solved by the present application is solved by the following technical solution:

[0006] The application discloses a chassis dynamometer test vehicle emergency quick removal device, which comprises a telescopic arm, a quick removal clamping device load main body, a cross arm, a winch, a cable and a limiting assembly; the two sides of the quick removal clamping device load main body are slidably connected with the telescopic arm, and the telescopic arm can be axially pulled along the quick removal clamping device load main body to adapt to wheel tracks of different vehicle models; the cross arm is provided with two groups, each group of the cross arm is composed of two rods which are crossed, the cross arms are connected through tapered roller bearings at the cross positions, and the two ends of the cross arm are detachably connected with the two quick removal clamping device load main bodies through positioning pins to adjust the distance between the two load main bodies; a fixed pulley is fixed to the outer side of the quick removal clamping device load main body, one end of the cable is fixed to one of the quick removal clamping device load main bodies, and the other end of the cable is connected with the hook of the winch after passing through the fixed pulley; the limiting assembly comprises a limiting pin and a limiting pin spring, the limiting pin is arranged in the connecting hole of the quick removal clamping device load main body and the cross arm, and the limiting pin spring is sleeved on the tail of the limiting pin and is used for automatically locking the position when the device is retracted; the winch is arranged outside the chassis dynamometer environment bin, the quick removal clamping device load main body is driven by the winch to clamp the rear wheels of the vehicle, and the vehicle is dragged out of the environment bin.

[0007] Preferably, the technical scheme further comprises a rolling idler, three rolling idler mounting and positioning holes are arranged on each telescopic arm, two rolling idlers are fixed on the telescopic arm through interference fit, and the rolling idlers roll relative to the wheels during clamping of the wheels, so as to reduce sliding resistance and avoid scratching the surface of the wheels.

[0008] Preferably, the technical scheme further comprises a rolling idler, three rolling idler mounting and positioning holes are arranged on each telescopic arm, two rolling idlers are fixed on the telescopic arm through interference fit, and the rolling idlers roll relative to the wheels during clamping of the wheels, so as to reduce sliding resistance and avoid scratching the surface of the wheels.

[0009] Preferably, the technical scheme further comprises a tapered roller bearing mounting base, the tapered roller bearing mounting base is welded on the quick removal clamping device load main body, and the tapered roller bearing is mounted in the tapered roller bearing mounting base, so as to realize stable connection of the cross arm and the quick removal clamping device load main body.

[0010] Preferably, the technical scheme further comprises a tapered roller bearing mounting base, the tapered roller bearing mounting base is welded on the quick removal clamping device load main body, and the tapered roller bearing is mounted in the tapered roller bearing mounting base, so as to realize stable connection of the cross arm and the quick removal clamping device load main body.

[0011] Preferably, the winch is connected with the emergency control button through a cable, and supports forward and reverse rotation operation; when rotating forward, the winding cable drives the device to clamp and drag the vehicle; when rotating reversely, the cable is released, so that the device can be separated from the vehicle and then disassembled and stored.

[0012] The above technical solution has the following beneficial effects:

[0013] (1) The present application adopts a pure mechanical structure to solve the problem of signal interference in special environments and improve the stability of the device.

[0014] (2) The present application can be directly arranged at the bottom of the chassis dynamometer test vehicle, solving the problem of internal space arrangement of the existing built-in chassis dynamometer environment.

[0015] (3) The present application can be directly disassembled after testing the vehicle, without the need to be arranged in a fixed position, with low maintenance cost and higher practicality.

[0016] (4) The chassis dynamometer vehicle quick removal device is composed of a telescopic arm, a quick removal device bearing body, a pulley and a limiting device, and can freely change the wheelbase form according to needs through reasonable design, solving the problem of universality in different vehicle models and different specification chassis dynamometer environments. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0018] Figure 1 Assembled view of the chassis dynamometer vehicle emergency quick removal device.

[0019] Figure 2 Exploded view of the chassis dynamometer vehicle emergency quick removal device parts.

[0020] Figure 3 Schematic diagram of the telescopic arm and the quick removal clamping device bearing body.

[0021] Figure 4 Schematic diagram of the locking device and the cross arm limiting tooth.

[0022] Figure 5 Schematic diagram of the quick removal clamping device and the winch linkage.

[0023] Figure 6 Schematic diagram of the overall use of the quick removal device.

[0024] Wherein: 1-telescopic arm; 2-rolling idler; 3-quickly remove clamping device load main body; 4-cross arm; 5-roller; 6-fixed pulley; 7-tapered roller bearing; 8-limiting pin; 9-positioning pin; 10-limiting pin spring; 11-cable; 12-winch; 13-tapered roller bearing mounting base. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated.

[0026] The present application is a chassis dynamometer test vehicle emergency quick removal device, the core is composed of telescopic arm 1, quickly remove clamping device load main body 3, cross arm 4, roller 5, fixed pulley 6, tapered roller bearing 7, limiting pin 8, positioning pin 9, limiting pin spring 10, cable 11, winch 12, tapered roller bearing mounting base 13, positioning pin mounting hole 14, each component cooperates to realize the quick clamping and removal of the vehicle in emergency.

[0027] Telescopic arm 1, which is installed on the quickly remove clamping device load main body 3. Located at the bottom of the rear wheels of the car on both sides, according to the wheel track of the test vehicle, the telescopic arm pull length is adjusted flexibly, so as to adapt to different working space. When in use, it needs to be pushed into the bottom of the rear wheels of the vehicle, and by adjusting the pull length, it is ensured that it is accurately fitted with the side of the wheel and does not affect the normal test operation of the chassis dynamometer.

[0028] Rolling idler 2, three rolling idler mounting positioning holes are arranged on each telescopic arm 1, two rolling idlers 2 are installed on the telescopic arm 1 through interference fit (two rolling idlers are installed on one telescopic arm), and in the process of clamping the wheel by the device, the rolling idler 2 rolls and slides relative to the wheel to reduce the sliding resistance and avoid scratching the surface of the tire.

[0029] Quickly remove clamping device load main body 3 is a rectangular frame structure, the inside part of the side is hollow, the size is adapted to the telescopic arm 1 and slightly larger than the telescopic arm 1, mainly plays the role of load bearing and contraction; cooperating with the telescopic arm 1, the telescopic arm 1 is stretched according to the wheel track of the vehicle, and is connected with the cross arm 4 and the roller 5 to build the main structure of the quick removal device. Preferably, the top is used for installing the telescopic arm 1, the bottom is connected with the roller 5, the side is assembled with the cross arm 4 and the fixed pulley 6, and the overall structure needs to be stable and can bear the weight transmitted by the rear wheels of the test vehicle.

[0030] Crossing arms 4, each group is composed of two bars crossing, a total of two groups; adjust, guide the working distance between the quick removal clamping device load-bearing body, the two ends of the crossing arm 4 are connected through the tapered roller bearing 7 and the positioning pin 9, and the working process is telescopic around the rotation direction of the rolling bearing. Preferably, the intersection is connected through the tapered roller bearing 7, and the two ends are connected through the positioning pin 9 and the two quick removal clamping device load-bearing bodies 3; it can rotate and telescope around the tapered roller bearing 7 during work to adjust the distance between the two quick removal clamping device load-bearing bodies 3, and adapt to different specifications of chassis dynamometers.

[0031] Roller 5, which plays a load rolling role during work. The roller 5 is fixed to the bottom of the quick removal clamping device load-bearing body 3 by bolts; during the movement of the device driving the vehicle, the roller 5 rolls along the ground of the chassis dynamometer, reducing the frictional resistance when the device moves, and ensuring that the vehicle can be smoothly pulled out of the environment.

[0032] Fixed pulley 6, fixedly connected with the quick removal clamping device load-bearing body 3, the cable 11 passes through the fixed pulley 6 to make the two quick removal device bodies form forces in opposite directions with the same size to make the device clamp tightly. Preferably, the fixed pulley 6 is fixed to the middle of the outer side of the quick removal clamping device load-bearing body 3 by bolts, one on each side; after the cable 11 passes through the fixed pulley 6, the force direction can be changed, so that the two quick removal clamping device load-bearing bodies 3 generate forces in opposite directions with the same size under the pull of the cable 11, ensuring that the device clamps the wheels evenly.

[0033] Tapered roller bearing 7, which connects the two crossing arms 4 and connects the crossing arms 4 and the quick removal clamping device load-bearing body 3, and plays a connecting, load-bearing, steering and other roles during work. Preferably, the tapered roller bearing 7 is fixed to the quick removal clamping device load-bearing body 3 through the tapered roller bearing mounting base 13; the tapered roller bearing mounting base 13 is a steel structure welded to the designated position of the quick removal clamping device load-bearing body 3, ensuring that the coaxiality of the tapered roller bearing 7 meets the assembly requirements after installation, and avoiding the jamming of the crossing arm 4 during telescoping.

[0034] Limiting pin 8 and limiting pin spring 10, which adjusts the direction of the limiting pin according to the use requirements, and automatically limits the device during contraction to prevent the device from being stretched in the opposite direction under the action of the wheel gravity. Preferably, the limiting pin 8 is provided in the connecting hole of the quick removal clamping device load-bearing body 3 and the crossing arm 4, and the limiting pin spring 10 is sleeved on the tail of the limiting pin 8; when the device is contracted to clamp the wheels, the limiting pin spring 10 provides elastic force to make the limiting pin 8 automatically enter the corresponding positioning structure, preventing the device from being stretched in the opposite direction under the action of the wheel gravity, and ensuring the stability of the clamping state.

[0035] Positioning pin 9 and positioning pin mounting hole, positioning pin mounting hole is opened in the connecting end of quick removal clamping device load main body 3 and cross arm 4, positioning pin 9 is inserted into positioning pin mounting hole 14, the relative position of cross arm 4 and quick removal clamping device load main body 3 can be fixed;After adjusting the telescopic length of cross arm 4 according to the vehicle type and dynamometer specification, insert positioning pin 9 to lock the current distance.

[0036] Cable 11, one end is connected to quick removal clamping device load main body 3, passes through the other end of fixed pulley 6, passes through cable positioning hole and winch hook connection, and plays a role in force transmission in the working process. Specifically, one end is fixed on the hook of one of the quick removal clamping device load main body 3, the other end is wound around the fixed pulley 6, passes through the cable positioning hole on the quick removal clamping device load main body 3, and is connected with the hook of winch 12;Mainly play the role of force transmission, the tension of winch 12 is transmitted to quick removal clamping device load main body 3.

[0037] Winch 12 is arranged outdoors and plays a role in starting power system in the working process, and the cable 11 is wound up to drag the clamping device arranged indoors to the outdoor. As the power source of the device, the quick removal clamping device load main body 3 can be driven by winding the cable 11 to clamp the wheel, and the device and the vehicle can be continuously pulled to drag the vehicle from the environment bin to the outdoor safety area, and the positive and negative rotation operation can be supported to control the winding and unwinding of the cable 11.

[0038] As shown in Figure 1 , telescopic arm 1 and quick removal clamping device load main body 3: the quick removal device of the application can freely select the fixed length according to the wheel spacing working space size during use, and adapt to different working space. When using, the device is pushed into the vehicle bottom at the rear wheel, the length of 1 telescopic arm is adjusted according to the wheel spacing, and 3 quick removal clamping device load main body is received.

[0039] As shown in Figure 2 , limit pin 9 and cross arm 4: limit pin 8 is installed between quick removal clamping device load main body 3 and cross arm 4, which can limit the device to stretch or shorten according to the direction of adjusting limit pin 8, and is fixed at the required working position to prevent the device from working in the direction not required.

[0040] As shown in Figure 3 , cable and quick removal device and winch work: the size of the chassis dynamometer test vehicle emergency quick removal device of the application is designed by matching parts, which can be placed at the rear wheel of the chassis dynamometer and the test vehicle bottom, connected with the outdoor winch cable hook, and directly pulled out of the environment bin and placed in a safe position in an emergency.

[0041] Overall working condition:

[0042] When the test vehicle is tested on the test bench, the quick removal clamping device is placed at the bottom of the rear wheels of the whole vehicle (without affecting the normal operation of the chassis dynamometer), the cable 11 of the quick removal clamping device is connected with the hook of the winch 12, when an emergency occurs during the test on the test bench, the winch 12 is started, the cable 11 is retracted relative to the quick removal clamping device, the telescopic arm of the quick removal clamping device abuts against the tire, the tire is clamped by the interaction, the limiting device is automatically locked in the working position required, reaches the fixed position, and the winch drags the vehicle out of the test chamber (after the tire is clamped and lifted by the clamping device, the lateral support force of the upper stop point of the telescopic arm and the tire contact surface is interlocked with the gravity of the vehicle, so that the separation of the clamping device and the vehicle during the dragging process is avoided), without the need for personnel to enter the cabin to remove the vehicle, the damage of the test chamber equipment caused by the fire and abnormal discharge of the vehicle is avoided, and the personal safety of the test personnel is ensured.

[0043] Device use steps (emergency removal of vehicle):

[0044] 1. Pre-positioning: Before the test vehicle enters the chassis dynamometer test bench, the assembled device is pushed to the rear wheel bottom area of the vehicle in the dynamometer, the positioning pin 9 is pulled out, the telescopic length of the cross arm 4 is adjusted, the telescopic arm 1 is aligned on both sides of the rear wheel of the vehicle, and it is ensured that the center line of the device is parallel to the axis of the rear wheel of the vehicle; after the adjustment is completed, the positioning pin 9 is reinserted to fix the position of the cross arm 4.

[0045] 2. Telescopic arm adjustment: After the vehicle is parked stably, the telescopic arm 1 is manually pulled out, so that the idler pulley 2 is attached to the side of the tire, and it is ensured that the telescopic arm 1 is in close contact with the wheel but does not affect the normal test of the vehicle; at this time, the limiting pin 8 is in the unlocked state and is automatically locked when the clamping operation is performed.

[0046] 3. Emergency clamping and removal: when the vehicle appears smoke, fire and other emergencies, the “retraction” button of the winch 12 is started, the winch 12 winds the cable 11, the two quick removal clamping device load main bodies 3 are brought together through the fixed pulley 6, and the telescopic arm 1 clamps the wheel; when the clamping force reaches the preset value, the limiting pin 8 is automatically inserted into the positioning structure under the action of the limiting pin spring 10, and the device position is locked; the winch 12 continuously winds the cable 11, the device moves the vehicle to the environment warehouse outlet through the roller 5, and the vehicle is completely removed to the outdoor safety area.

[0047] 4. Device separation: after the vehicle reaches the safety area, the winch 12 is stopped, the “release” button is started to release the cable 11, the limiting pin 8 is manually pulled out, the telescopic arm 1 is pulled out to separate from the wheel, and finally the modules of the device are disassembled and stored.

[0048] The present application has the beneficial effects of solving the problem of difficult arrangement of the AVG trolley in the chassis dynamometer test room, solving the problem of high modification cost of the existing built-in rotating hub by adding a quick removal device, solving the problem of manual operation to remove the vehicle from the test room in case of emergency, solving the risk of damage to the test room equipment caused by fire and abnormal discharge of new energy vehicles, and solving the problem of injury to personnel caused by firefighting in the test room in case of fire and abnormal discharge of new energy vehicles.

[0049] In summary, the chassis dynamometer vehicle emergency quick removal device of the present application can be flexibly combined according to actual conditions, is suitable for various chassis dynamometer test rooms, and has a wide range of adaptability.

[0050] Although the present application has been disclosed as above, it is not intended to limit the present application, and any person skilled in the art can make various selections and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is defined by the claims and their equivalent forms.

Claims

1. A chassis dynamometer test vehicle emergency quick release device characterized by, Including telescopic arm (1), quick removal clamping device load main body (3), cross arm (4), winch (12), cable (11) and limit component;The both sides of the quick removal clamping device load main body (3) are slidably connected with the telescopic arm (1) respectively, and the telescopic arm (1) can be pulled along the quick removal clamping device load main body (3) in the axial direction to adapt to different wheelbase of vehicle;The cross arm (4) is provided with two groups, each group of cross arm (4) is composed of two rods, and the cross arms are connected by tapered roller bearings (7) at the cross section, and the two ends of the cross arm (4) are detachably connected with the two quick removal clamping device load main bodies (3) through positioning pins (9) respectively, so as to adjust the distance between the two load main bodies;The quick removal clamping device load main body (3) is fixed with a fixed pulley (6) outside, one end of the cable (11) is fixed with one of the quick removal clamping device load main bodies (3), and the other end is connected with the hook of the winch (12) after passing through the fixed pulley (6);The limit component includes a limit pin (8) and a limit pin spring (10), the limit pin (8) is arranged in the connecting hole of the quick removal clamping device load main body (3) and the cross arm (4), and the limit pin spring (10) is sleeved on the tail of the limit pin (8), which is used for automatically locking the position when the device is retracted;The winch (12) is arranged outside the chassis dynamometer environment bin, the quick removal clamping device load main body (3) is driven by winding the cable (11) to clamp the rear wheels of the vehicle, and the vehicle is pulled out of the environment bin.

2. A chassis dynamometer test vehicle emergency quick removal device according to claim 1 characterised in that, It also includes a rolling idler (2), each telescopic arm (1) is provided with three rolling idler mounting positioning holes, two rolling idlers (2) are fixed on the telescopic arm (1) by interference fit, and the rolling idlers (2) roll relative to the wheels during the clamping of the device to reduce the sliding resistance and avoid scratching the surface of the tire.

3. The chassis dynamometer test vehicle emergency quick removal device of claim 1, wherein, The quick removal clamping device load main body (3) is a rectangular frame structure, the inside of the side is hollow, and the hollow size is matched with the telescopic arm (1), and the bottom of the quick removal clamping device load main body (3) is fixed with a roller (5) through bolts, which is used for reducing the frictional resistance of the ground when the device drives the vehicle to move.

4. The chassis dynamometer test vehicle emergency quick removal device of claim 1, wherein, It also includes a tapered roller bearing mounting base (13), which is welded on the quick removal clamping device load main body (3), and the tapered roller bearing (7) is installed in the tapered roller bearing mounting base (13), which is used for realizing the stable connection of the cross arm (4) and the quick removal clamping device load main body (3).

5. The chassis dynamometer test vehicle emergency quick removal device of claim 1, wherein, The connecting end of the quick removal clamping device load main body (3) and the cross arm (4) is provided with a positioning pin mounting hole, the positioning pin (9) is inserted into the positioning pin mounting hole, so as to fix the relative position of the cross arm (4) and the quick removal clamping device load main body (3), and the telescopic length of the cross arm (4) can be adjusted by replacing the positioning pin (9) inserted into the positioning pin mounting hole.

6. The chassis dynamometer test vehicle emergency quick removal device of claim 1, wherein, The winch (12) is connected with an emergency control button through a cable, supports forward and reverse rotation operation, clamps and drags the vehicle when winding the cable (11) driven device in forward rotation, releases the cable (11) in reverse rotation, and facilitates separation of the device from the vehicle and subsequent disassembly and storage.

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