JP5304262B2 - Vehicle test equipment safety fence - Google Patents

Description

  In this invention, a driving wheel of a test vehicle is placed on a roller, a dynamometer is connected to the roller, and a driving force and a braking force of the test vehicle are transmitted to the dynamometer through the roller, thereby allowing the test vehicle to travel on the road indoors. The present invention relates to a safety fence of a vehicle test apparatus to be simulated.

  As shown in FIG. 14, the vehicle test apparatus has a roller 102 attached to a main shaft 101 of a dynamo body equipped with a motor, and a roller opening on a floor surface (hereinafter referred to as a pit cover) 103 positioned above the roller 102. 104 is provided, and the driving wheel 106 of the test vehicle 105 is placed on the peripheral surface of the roller 102 through the roller opening 104, and the driving wheel 106 is rotated and transmitted to the dynamometer 107 connected to the roller 102. Then, the driving force and braking force of the test vehicle during traveling are simulated. A safety fence 108 is attached to the side of the drive wheel 106 in parallel with the drive wheel 106.

  The safety fence 108 prevents an accident that occurs when an operator or the like mistakenly contacts the driving wheel 106 that rotates at high speed during the test operation. When the safety fence 108 is attached to one side of the roller opening 104 of the pit cover 103 in parallel with the drive wheel 106, there are the following drawbacks.

  (1) As shown in FIG. 15, the wider the width W of the safety fence 108 is, the more the driving wheel 106 can be covered and the safety is increased. However, when the door 109 of the test vehicle is opened. May become an obstacle. In particular, since the door positions are different between the two doors and the four doors, the safety fence 108 often becomes an obstacle when the door 109 is opened and closed.

  (2) Since the distance between the right wheel and the left wheel of the test vehicle (hereinafter referred to as the left and right wheel distance) differs depending on the vehicle type, the position of the roller 102 may have to be reduced in accordance with the left and right wheel distance. In this case, the gap between the drive wheel 106 and the safety fence 108 is enlarged, and there is room for a person to enter between the drive wheel 106 and the safety fence 108. Reference numeral 110 denotes a restraint rope that restrains the test vehicle 105.

  Therefore, as a means for eliminating the disadvantage (1), as shown in FIG. 16, a top part 112 is slidably mounted on a slide rail 111 installed in a vehicle test apparatus, and an insertion hole of the top part 112 is inserted. The lower part of one vertical frame bar 113a of the safety fence 113 is inserted into 112a so as to be rotatable and freely movable, and the end of the lock bar 114 attached to the other vertical frame bar 113b is connected to the side parts of the slide rail 111. A safety fence for a vehicle test apparatus has been developed that can selectively enter and exit a plurality of locking holes 115 a provided in 115.

Japanese Utility Model Publication No. 5-11044

  The safety fence of the vehicle test apparatus of Patent Document 1 can release the safety fence at a position that does not hinder the opening and closing of the door when the door of the test vehicle is opened and closed. Although the disadvantage can be eliminated, as described above, the locking hole 115a provided at the side member 115 of the slide rail 111 with the tip of the lock rod 114 attached to the other vertical frame rod 113b of the safety fence 113. Since the safety fence 113 is fixed substantially in parallel with the driving wheel of the test vehicle, the above-mentioned drawback (2) cannot be solved.

  An object of the present invention is to provide a safety fence for a vehicle test apparatus that can eliminate not only the drawback (1) but also the disadvantage (2).

  The invention according to claim 1 is a fixed fence portion arranged substantially in parallel with a wheel of a test vehicle placed on a roller facing the outside from a roller opening provided in the pit cover. A folding fence portion that is attached to at least one side of the fixed fence portion in the longitudinal direction of the test vehicle so as to be bent with respect to the fixed fence portion, and the folding fence portion is desired with respect to the fixed fence portion. And a locking portion that locks at the bending angle.

  According to a second aspect of the present invention, in the safety fence of the vehicle test apparatus according to the first aspect, the safety fence is provided along one side of the roller opening of the pit cover.

  According to a third aspect of the present invention, in the safety fence of the vehicle test apparatus according to the first aspect, the safety fence is provided on a roller cover that opens and closes a roller opening of the pit cover.

  The invention according to claim 4 is the safety fence of the vehicle test apparatus according to any one of claims 1 to 3, wherein the fixed fence part and the bent fence part are provided, the fence body part, and a frame surrounding the fence body part. And the fixed fence part is detachably assembled to the fence assembly part of the roller cover that opens and closes the roller opening. By providing a cylindrical bearing portion on the side, and inserting a shaft portion for assembling the bent fence portion provided along one side portion of the frame of the fixed fence portion into the cylindrical bearing portion. The shaft portion is pivotally attached to the shaft portion.

  According to a fifth aspect of the present invention, in the safety fence of the vehicle test apparatus according to any one of the first to fourth aspects, a locking portion that locks the bent fence portion at a desired angle with respect to the fixed fence portion, A lock pin that is slidably attached to the bent fence part, and a disk-shaped pin engaging part provided on a shaft part for assembling the fixed fence part. A plurality of lock pin receiving holes are provided on the outer peripheral surface of the plate-like pin engaging portion to insert the tip end portions of the lock pins radially around the shaft portion for assembling the bent fence portion.

  The safety fence of the vehicle test apparatus according to claim 1 can improve safety by widening the safety fence by extending the bent fence part in a straight line with respect to the fixed fence part. Also, by folding the bent fence part to the back side of the fixed fence part (the side opposite to the drive wheel), the width of the safety fence can be narrowed to prevent the test vehicle door from being obstructed. . Further, by making the bent fence portion bent toward the drive wheel side, the gap with the wheel can be reduced, and an operator can be prevented from entering.

  Since the safety fence of the vehicle test apparatus according to claim 2 is provided along one side of the roller opening of the pit cover, the position of the roller opening is clarified to prevent falling off to the roller opening. can do.

  Since the safety fence of the vehicle test apparatus according to claim 3 is provided on the roller cover that opens and closes the roller opening of the pit cover, the distance from the driving wheel of the test vehicle is also adjusted by the degree of opening and closing of the roller cover. Can do.

  The safety fence of the vehicle test apparatus according to claim 4 is configured such that the fixed fence portion can be attached to and detached from the pit cover or the roller assembly of the roller cover that opens and closes the roller opening. This can be removed. In addition, the folding fence portion can be opened and closed by rotating the folding fence portion around a shaft portion for assembling the folding fence portion provided on one side of the frame of the fixed fence portion.

  The safety fence of the vehicle test apparatus according to claim 5 inserts a lock pin slidably attached to the folding fence portion into a lock pin receiving hole provided on an outer peripheral surface of the disk-shaped pin engaging portion. Accordingly, the folding fence portion can be positioned and fixed by being inclined at a predetermined angle toward the driving wheel side or the counter driving wheel side.

FIG. 1 is a perspective view in a state where a roller opening is fully opened. FIG. 2 is a schematic cross-sectional view of FIG. 1. The enlarged view of the principal part of FIG. AA sectional drawing of FIG. The perspective view of the state which closed the roller opening part fully. FIG. 6 is a schematic cross-sectional view of FIG. 5. The enlarged view of the principal part of FIG. Sectional drawing of the state which closed a part of roller opening part with the roller cover. The perspective view of the roller cover which attached the safety fence to the front-end | tip part. The perspective view which looked at the roller cover from the back side. Sectional drawing which shows the fitting state of a guide roller and a guide rail. The perspective view of a safety fence. A is a perspective view of an engaging part, B is a top view. Schematic explanatory drawing of a vehicle test apparatus. A is a top view which shows the problem of a prior art example, B is the same side view. A is a side view showing another conventional example, and B is a plan view of the same.

  Hereinafter, the present invention will be described in the order of (1) configuration of the entire vehicle test apparatus, (2) configuration of a safety fence, (3) action, and (4) other embodiments.

(1) Schematic configuration of entire vehicle test apparatus As shown in FIGS. 1 to 3, the vehicle test apparatus 1 includes a pit provided with a roller opening 4 that exposes the circumferential surface of the roller 3 disposed in the pit 2 to the outside. A cover 5, a roller cover 6 that opens and closes the roller opening 4, and a safety fence 7 provided at the tip of the roller cover 6 are provided.

  The roller opening 4 is provided in a substantially rectangular frame 8. The frame body 8 includes a pair of long holes 9 into which connecting members 31 of a roller cover 6 described later are inserted. The frame 8 is movable in the front-rear direction of the test vehicle by the belt conveyor 10 and is moved in the front-rear direction of the test vehicle by following the roller 3.

  The roller cover 6 is moved in the vehicle width direction of the test vehicle by a pair of sprockets 11 to open and close the roller opening 4.

  As shown in FIG. 2, the roller 3 is attached to a main shaft 12a of a dynamometer body 12 having a motor. The roller 3 and the dynamometer main body 12 are attached to a moving table (not shown), and the position of the roller 3 can be moved according to the distance between the front and rear wheels of the test vehicle. Then, a dynamometer body connected to the roller 3 by placing a driving wheel (not shown) of the test vehicle on the peripheral surface of the roller 3 through the roller opening 4 and rotating the driving wheel. 12 to simulate the driving force and braking force of the test vehicle during traveling.

  As shown in FIG. 4, the pair of sprockets 11 are attached to the shaft 13. The shaft 13 is rotated by a motor 14.

  When the roller opening 4 is opened, the roller cover 6 is bent from a guide rail 37 (described later) at the pair of sprockets 11 and bent at a substantially right angle to form the pit 2 as shown in FIGS. It hangs inside.

  An opening protector 15 is provided at the upper surface position of one side of the frame body 8 where the roller cover 6 comes off the guide rail 37 and starts to enter the pit 2. Further, as shown in FIGS. 5 to 7, the roller cover 6 is in a parallel state so as to overlap the upper surface of the frame body 8 and closes the roller opening 4.

  A touch sensor 21 is provided at the tip of the roller cover 6. As shown in FIG. 8, the touch sensor 21 is for closing the roller cover 6 in a semi-closed state, and the roller cover 6 is closed in a state where the driving wheel 106 of the test vehicle 105 is placed on the roller 3. When moved, the roller-shaped contact portion of the touch sensor 21 hits the side surface of the drive wheel 106 and detects that the tip of the roller cover 6 has contacted the side surface of the drive wheel 106.

  A detection signal that detects that the tip of the roller cover 6 has come into contact with the side surface of the drive wheel 106 is input to a control device (not shown) in the pit 2, and the motor 14 is rotated in reverse for a predetermined time, thereby the touch sensor 21. The roller cover 6 is separated from the drive wheel 106 by a predetermined amount.

  As shown in FIG. 9, the roller cover 6 is formed into a foldable plate shape (belt conveyor shape) by arranging a large number of plate materials 30 in parallel and connecting the both side portions with a pair of chain-like connecting members 31, 31. Has been.

  A low friction material 32 made of synthetic resin is attached to the back surface of the roller cover 6. The low friction material 32 comes into contact with the upper surface of the frame body 8 to smoothly move the roller cover 6 when the roller cover is opened and closed, and the lower surface thereof is brought into contact with the upper surface of the frame body 8, thereby Even when a large load is applied, the plate 30 is prevented from being bent.

  As shown in FIG. 10, the connecting member 31 includes a number of links 34 that are sequentially connected by a shaft 33 so as to be rotatable. A guide roller 35 is rotatably attached to the shaft 33.

  The link 34 includes a pair of plates 34a and 34b arranged in parallel. A fixing portion 34c extending substantially perpendicular to the plate 34b is provided at the lower end of the one plate 34b.

  The link 34 is attached to the back surface of the plate member 30 with screws 36 with the fixing portion 34 c overlapped on a pedestal portion 30 a provided on the back surface of the plate member 30.

  The connecting member 31 is attached to both side portions in the longitudinal direction of the plate member 30 with the guide roller 35 facing outward.

As shown in FIG. 11, the guide roller 35 of the connecting member 31 is inserted into a concave groove 38 of a guide rail 37 provided in the frame body 8, and the roller cover 6 is moved along the concave groove 38 on the test vehicle. Smoothly move in the vehicle width direction.
The guide rail 37 is formed to have substantially the same length as the long hole 9 provided in the frame body 8.

  A lead wire holder 39 for attaching the lead wire 22 of the touch sensor 21 is attached to the connecting member 31. The lead wire holder 39 is attached to the pedestal portion 30 a together with the fixing portion 34 c of the one plate 34 b of the link 34 by the screw 36.

  A spring material 41 is attached to the lead wire holder 39 by a screw 40, and the lead wire 27 is held by the spring material 41 in a state of being pressed against one side surface of the lead wire holder 39.

  The roller cover 6 and the frame 8 are provided with roller cover position detecting means 42 for detecting whether the roller cover 6 is in the open position or the closed position. The roller cover position detecting means 42 includes a proximity switch 43 provided on the frame body 8 and a pair of switch operating bodies 44 provided on the roller cover 6. When the roller cover 6 comes to the fully open position, the proximity switch 43 detects one switch operating body 44 to stop the driving of the motor 14, and when the roller cover 6 comes to the fully closed position, the proximity switch 43 The other switch operation body 44 is detected and the drive of the motor 14 is stopped.

(2) Configuration of Safety Fence As shown in FIG. 1, the safety fence 7 is arranged at the tip of the roller cover 5 and arranged substantially in parallel with the driving wheel of the test vehicle placed on the roller 4. The fixed fence 51, the bent fence 52 attached to both sides of the fixed fence 51 in the longitudinal direction of the test vehicle so as to be bent with respect to the fixed fence 51, and the bent fence 52 are A locking portion 53 that locks the fixed fence portion 51 at a desired angle.

  As shown in an enlarged view in FIG. 12, the fixed fence portion 51 includes a fence body portion 61 made of a metal plate having innumerable holes and a frame body 62 surrounding the fence body portion 61.

  The fixed fence portion 51 includes a pair of protrusions 63 and 63 on the lower side of the frame body 62, and these protrusions 63 and 63 are inserted into protrusion insertion holes (not shown) provided in the fixed fence portion support body 64. It is attached to the fixed fence part support body 64 so that attachment or detachment is possible. The fixed fence support 64 is attached to the tip of the roller cover 5 with a bolt 65. Moreover, the fixed fence part 51 is equipped with the axis | shaft part 66 for folding fence part attachment to the both sides of the front-back direction of the test vehicle of the frame 62, and the folding fence part 52 can rotate to these axis parts 66. Is attached.

  Similar to the fixed fence 51, the bent fence 52 includes a fence main body 71 made of a metal plate having numerous holes and a frame 72 surrounding the fence main body 71. A cylindrical bearing portion 73 is provided on one side of the frame body 72, and the shaft portion 66 for attaching the bent fence portion of the fixed fence portion 51 is inserted into the cylindrical bearing portion 73. The shaft portion 66 is attached so as to be rotatable.

  The locking portion 53 includes a lock pin 81 slidably attached to the upper side of the folding fence portion 52 and a disc provided on the shaft portion 66 for assembling the folding fence portion of the fixed fence portion 51. And a pin engaging portion 82 having a shape.

  As shown in FIG. 13, the lock pin 81 is formed by bending a metal bar into a substantially L shape. The lock pin 81 is slidably inserted into a cylindrical pin holder 83 provided on the upper side of the folding fence portion 52. The lock pin 81 is urged by a pin urging spring (not shown) provided in the pin holder 83, and the tip part is engaged with a lock pin receiving hole 84 provided on the outer peripheral surface of the pin engaging part 82. .

The pin engaging portion 82 is formed in a shape in which a part of a thick disk of about 10 mm is cut out in a range of approximately 90 °, and a plurality of pin engaging portions 82 are radially formed around the shaft portion 66 on the outer peripheral surface. The lock pin receiving hole 84 is formed. Then, by engaging (fitting) the distal end portion of the lock pin 81 with the lock pin receiving hole 84, the bent fence portion 52 is locked to the fixed fence portion 51, and the distal end portion of the lock pin 81 is locked to the lock pin receiving hole 84. (3) Operation As shown in FIGS. 1 to 3, the driving wheel of the test vehicle is placed on the roller 3 with the roller opening 5 fully opened. Then, fix the test vehicle so as not to move with a restraining rope or the like.

  Next, the roller cover 6 is moved in the closing direction. When the touch sensor 21 provided at the tip of the roller cover 6 contacts the side surface of the drive wheel, the motor 14 reverses for a predetermined time based on the signal of the touch sensor 21, and as shown in FIG. 21, the roller cover 6 and the safety fence 7 are separated from the drive wheels by a predetermined amount.

  As shown by a solid line in FIG. 13, in a state where the bent fence portion 52 is extended in a straight line substantially parallel to the fixed fence portion 51 and the safety fence is made the longest, the bent fence portion 52 is connected to the test vehicle. In the case of an obstacle to opening and closing the door, as shown by a one-dot chain line in FIG. 13, the folding fence portion 52 is inclined to the counter-drive wheel side so as to escape from the door, or the folding fence portion 52 is fixed to the fixed fence portion. 51. The door is placed on the back of 51 so that the door can be freely opened and closed. Further, when it is desired to further narrow the distance between the bent fence portion 52 and the drive wheel, as shown by a two-dot chain line, the bent fence portion 52 is inclined toward the drive wheel side, and a gap between the drive wheel and the drive wheel. Reduce safety and improve safety. Then, various tests of the test vehicle are performed by rotating the driving wheel of the test vehicle.

  When the various tests are completed, the roller cover 6 is moved in the opening direction so that the roller opening 5 is fully opened. Then, after removing the test vehicle from the roller 3, the roller cover 6 is moved in the closing direction. When the roller cover 6 reaches the fully closed position, it is detected by the roller cover position detecting means 42, and the roller cover 6 stops at the fully closed position.

(4) Other Embodiments Since the distance between the front wheels and the rear wheels of the test vehicle (hereinafter referred to as the front and rear wheel distance) differs depending on the vehicle type, the position of the roller 3 must be moved according to the front and rear wheel distance. In this case, the position of the roller opening 5 must be moved in the front-rear direction of the test vehicle in accordance with the position of the roller 3, and the position of the roller opening 5 is moved in accordance with the position of the roller 3. There must be.

  Therefore, in the above embodiment, as described above, the frame 8 provided with the roller opening 5 is moved by the conveyor 10 in accordance with the front-rear wheel interval. However, the roller opening 5 is provided directly on the pit cover. May be. In this case, the safety fence is provided on the pit cover.

  In the above embodiment, the roller opening 5 is opened and closed by the roller cover. However, the roller opening 5 may be left open.

  Moreover, in the said Example, the latching | locking part 53 which latches the bending fence part 52 with respect to the fixed fence part 51 at a desired angle is comprised with the lock pin 81 and the disk-shaped pin engaging part 82. Then, the front end of the lock pin 81 is inserted into a lock pin receiving hole 84 provided on the peripheral surface of the disk-shaped pin engaging portion 82, and the bent fence portion 52 is engaged with the fixed fence portion 51 at a desired angle. Although it is configured to stop, a high friction generating part is formed by attaching a friction material to the peripheral surface of the disk-shaped pin engaging part 82, and using an eccentric cam instead of the lock pin, By pressing the circumferential surface of the cam against the circumferential surface of the disk-shaped pin engaging portion 82, the bent fence portion 52 is locked to the fixed fence portion 51 at a desired angle by a frictional force. By releasing, you may make it bend | fold the bending fence part 52 with respect to the fixed fence part 51 freely. In addition, the latching | locking part 53 is not limited to the thing of the said Example, In short, what is necessary is just what can position and fix the bending fence part 13 reliably and easily with a simple structure.

  The vehicle test apparatus of the present invention is widely used in chassis dynamometers and the like for testing power transmission parts for automobiles such as transmissions, transaxles, and differential gears.

DESCRIPTION OF SYMBOLS 1 ... Vehicle test apparatus 2 ... Pit 3 ... Roller 4 ... Roller opening part 5 ... Pit cover 6 ... Roller cover 7 ... Safety fence 8 ... Frame 10 ... Conveyor 11 ... Sprocket 51 ... Fixed fence part 52 ... Bending fence part 53 ... engaging part 61 ... fence main part of fixed fence part 62 ... frame of fixed fence part

Claims (5)

A fixed fence portion arranged substantially in parallel with the wheels of the test vehicle placed on a roller facing the outside from the roller opening provided in the pit cover, and at least one side portion of the fixed fence portion in the longitudinal direction of the test vehicle A bent fence portion foldably attached to the wheel side and the opposite wheel side from a state of being straightly extended with respect to the fixed fence portion, and the bent fence portion with respect to the fixed fence portion. A safety fence for a vehicle testing apparatus, comprising: a locking portion that locks at an angle. The safety fence for a vehicle test apparatus according to claim 1, wherein the safety fence is provided along one side of a roller opening of the pit cover. The safety fence for a vehicle test apparatus according to claim 1, wherein the safety fence is provided on a roller cover that opens and closes a roller opening of the pit cover. The fixed fence part and the bent fence part include a fence main body part and a frame surrounding the fence main body part,
The fixed fence portion is detachably assembled to the rail assembly portion of the roller cover that opens and closes the pit cover or the roller opening,
The folding fence portion includes a cylindrical bearing portion on one side portion of the frame body, and the folding fence portion is provided on the cylindrical bearing portion along one side portion of the frame body of the fixed fence portion. The vehicle test apparatus according to claim 1, wherein the vehicle testing apparatus is attached so as to be rotatable about the shaft portion by inserting a shaft portion for assembling the curved fence portion. The locking portion includes a lock pin slidably attached to the folding fence portion, a disk-like pin engagement portion provided on a shaft portion for assembling the folding fence portion of the fixed fence portion, Consists of
The pin engaging portion includes a plurality of lock pin receiving holes for radially inserting the distal end portions of the lock pins around the shaft portion for assembling the bent fence portion on the outer peripheral surface. The vehicle test apparatus according to claim 1, wherein the vehicle test apparatus is characterized in that:

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