JP6395254B2 - Vehicle lift device - Google Patents

Description

  The present invention relates to a vehicle lift device.

  Conventionally, as a lift device for a vehicle, as described in Patent Document 1, a pair of left and right lifting platforms installed on the left and right of a maintenance work site of a target vehicle, and two front and rear positions of the lifting platform included in each lifting platform are supported. In addition, there is one having a pair of front and rear slide arms which can be raised together with the lifting platform.

  Each slide arm employed in the lift device for a vehicle described in Patent Document 1 includes a square-shaped base arm pivotally supported by a support shaft provided on a lifting platform of each lifting platform, and a rectangular section of the base arm. A square cross-section intermediate arm inserted in a telescopic manner and a square cross-section tip arm inserted in a quadrangular cross section of the intermediate arm in a telescopic manner. Prepare.

  Each slide arm swivels the base arm around the support shaft of the lifting platform, and linearly slides each arm of the base arm, the intermediate arm, and the tip arm to expand and contract, so that the receiving arm that the tip arm has is received. It can be positioned at the lift point defined at the bottom of the vehicle. In this state, the vehicle can be lifted up by raising the slide arms together with the elevators.

JP 2002-128482 A

  In the lift device for a vehicle described in Patent Document 1, the work of fitting the receiving member provided on the tip arm of each slide arm to the lift point provided at the lower part of the vehicle is performed by using the lower part of the dark vehicle to search for the lift point. It is difficult to adjust because it is necessary to look into it.

  Also, in recent vehicles equipped with aero parts such as side skirts on the side of the vehicle, these aero parts make it difficult to locate the lift point at the bottom of the vehicle and further improve the workability of receiving money to the lift point. Making it difficult.

  An object of the present invention is to easily lift up a vehicle by means of this vehicle receiver when the vehicle receiver is provided at the tip of each arm supported by each elevator provided in the pair of left and right elevators of the lift device for a vehicle. It is in.

The invention according to claim 1 is supported by each of a pair of left and right lifting platforms installed on the left and right of the maintenance work site of the target vehicle, and two front and rear positions of the lifting platform included in each lifting platform, and can be lifted together with the lifting platform. In the vehicle lift device having a pair of front and rear arms that are provided, a vehicle receiver that contacts the front and rear two positions of the lower portion of the tire of the vehicle is provided at the tip of each arm . A lift device for a vehicle that is movable in a longitudinal direction and a vehicle width direction and has front and rear levers that are in contact with each of two front and rear surfaces of a lower portion of each tire of the vehicle from below. The front and rear levers are positioned at the standby position on the side of each tire of the vehicle parked at the maintenance work position of the maintenance workshop, and moved from the standby position in the vehicle width direction to the front and rear two surfaces below each tire from below. Separated receptacle insert The vehicle is configured to be set in parallel with the front and rear surfaces of the lower part of each tire and to be in contact with each of the front and rear surfaces from the lower side by raising each arm while being positioned at the position. Is made to be able to lift up .

The invention according to claim 2 is the base according to the invention according to claim 1 , wherein each of the arms is composed of a swing arm, and each swing arm is composed of a link coupling body in which a plurality of links are coupled, and constitutes a link coupling body. The link is fixed to the lifting platform of the lifting platform, the distal end link constituting the link coupling body is provided with a vehicle receiver, and the link coupling body includes a base link, a distal end link, an intermediate link, a first link, a second link It consists of seven links, the first sublink and the second sublink. The lengths of the links of the base link, the tip link and the intermediate link are the same, and the lengths of the links of the first link and the first sublink are the same. The length of each link of the second link and the second sublink is the same, and the base link, the first link, the intermediate link, and the first sublink are the first parallelogram link mechanism. Together they are linked so as to formed, in which the intermediate portion and second links and the distal link and the second sub-link is to be connected so as to form a second parallelogram linkage.

The invention according to claim 3 is the invention according to claim 2 , wherein the link coupling body locks the free displacement of the first parallelogram link mechanism and the second parallelogram link mechanism is free. The arm lock means for locking the various displacements is provided.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the arm lock means further includes a first stop provided in the second sublink so as to be able to advance and retreat, and a first stop fixedly provided in the first sublink. The first engaging element can be meshed, and the second stationary element provided in the second sub-link so as to be able to advance and retreat, and the second engaging element fixedly provided in the intermediate link can be meshed with each other. The lock operating portion provided in the sub link causes the first stationary element to mesh with the first engaging element, and causes the second stationary element to mesh with the second engaging element, thereby freeing the first parallelogram link mechanism. The displacement and the free displacement of the second parallelogram link mechanism can be locked simultaneously.

The invention according to claim 5 is the vehicle according to the invention according to claim 1 , wherein each of the arms comprises a slide arm, and each slide arm is fixed to a lifting platform of the lifting platform and a base sliding guide. An intermediate slide body supported so as to be movable in the X-axis direction along the longitudinal direction, and a tip slide body supported by the intermediate slide body so as to be movable in the Y-axis direction along the vehicle width direction of the vehicle. The tip slide body is provided with a vehicle support.

(Claim 1)
(a) Each vehicle support provided at the tip of each arm supported by the lifting platform included in each of the left and right lifting platforms is movable in the longitudinal direction and the vehicle width direction of the vehicle. The front and rear levers are in contact with the front and rear surfaces of the lower part of the tire from below. Further, the front and rear levers of each vehicle support are positioned at the standby position on the side of each tire of the vehicle parked at the maintenance work position of the maintenance workshop, and moved from the standby position in the vehicle width direction to the bottom of each tire. The vehicle can be lifted up by sandwiching each tire from the front and rear by raising each arm while being positioned at the receiving device insertion position separated from the lower side on the two front and rear surfaces.
Therefore, by simply positioning each vehicle support provided at the tip of each arm at the standby position on the side of each tire of the vehicle parked at the maintenance work position of the maintenance work place, the lift-up start work can be started smoothly. Can do.
In addition, the front and rear levers of each vehicle receiver are inserted into the front and rear surfaces of the lower part of the tire from the side of each tire of the vehicle parked at the maintenance work position. Set smoothly . Lifting up of the vehicle can be started by simply positioning the front and rear levers of each vehicle receiver at the lift-up start work position.

  The operator does not need to look into the lower part of the dark vehicle or take a tight working posture to lower the head in order to find the lift point at the lower part of the vehicle. The vehicle can be lifted up easily in accordance with the front and rear positions of the lower part of the tire.

  (b) Since the lifting platform that supports each arm is fixedly installed in the maintenance work place, the portion of each vehicle support provided at the tip of each arm that contacts each tire can be stably set to a horizontal posture. . Therefore, even if there is a water gradient on the floor of the maintenance workshop, there is no risk that each vehicle support will tilt forward along the water gradient, and the entire vehicle will be lifted stably with the tires stably sandwiched from the front and rear. Can be up.

  (c) Each vehicle support provided at the tip of each arm is correctly displaced in the vehicle width direction so that the front and rear levers constituting the vehicle support are correctly set parallel to the front and rear surfaces of each tire. Thus, the two front and rear surfaces can be in contact with each other, and the tires can be stably sandwiched by the front and rear levers of the vehicle support so that the entire vehicle can be lifted up stably.

  On the other hand, when the front and rear levers of each vehicle support are set at positions oblique to the two front and rear surfaces of each tire, only the edge in the width direction of each tire is in contact with each lever. Since the contact length between the front and rear levers is small, the sandwiching of the tires by the front and rear levers becomes unstable, or the tire whose steering angle is not locked rotates in the steering direction with respect to the front and rear levers. There is a risk that the tires may drop into the front and rear levers during lift-up.

  (d) Each vehicle support can be applied to tires of various sizes by making it possible to change the mounting interval of the front and rear levers.

(Claim 2 )
(e) The link coupling body constituting the swing arm is configured to include a first parallelogram link mechanism and a second parallelogram link mechanism, and an intermediate link of the first parallelogram link mechanism; The intermediate link of the second parallelogram link mechanism is shared, the base link of the first parallelogram link mechanism is fixed to the lift base of the lift base, and the tip link of the second parallelogram link is fixed A vehicle receiver is provided. Thereby, no matter how the swing arm swings, the distal end link provided with the vehicle support moves in parallel with the base link fixed to the lifting platform of the lifting platform. Therefore, if the orientation of the vehicle support provided for the tip link is previously arranged in parallel or orthogonal to the longitudinal direction of the vehicle (front-rear direction of the vehicle) stopped at the maintenance work position of the maintenance work place, The vehicle holder moves in parallel regardless of how the swing arm swings. For example, when the swing arm is swung by the manual operation force of the operator holding the tip link, the vehicle support is easily positioned at an appropriate position along the longitudinal direction of the vehicle and at an appropriate position along the vehicle width direction of the vehicle. Easily positioned.

(Claim 3 )
(f) The link connecting body constituting the swing arm has arm lock means for locking the free displacement of the first parallelogram link mechanism and for locking the free displacement of the second parallelogram link mechanism. . As a result, when the vehicle support included in the front end link of the swing arm is positioned at the position where the support is inserted below the front and rear two positions of the lower part of the tire, the arm lock means has the first parallelogram link mechanism and the second parallelism link mechanism. The free displacement of the parallelogram link mechanism is locked, and as a result, the free swing of the swing arm can be easily and reliably locked, and the vehicle support can be easily fixed to the two front and rear positions of the lower part of the tire.

(Claim 4 )
(g) The arm lock means is capable of meshing with the first stationary member provided in the second sub-link so as to be able to advance and retreat, and the first engaging member provided fixedly in the first sub-link, and with the second sub-link. The second stationary element provided on the link so as to be able to advance and retreat, and the second engaging element provided fixedly on the intermediate link can be engaged with each other, and the first stationary element is provided by the lock operation part provided on the second sub-link. The first engaging element is engaged with the second stationary element, and the second engaging element is engaged with the second engaging element. The free displacement of the first parallelogram link mechanism and the free displacement of the second parallelogram link mechanism are obtained. Make lockable at the same time. Thereby, the compact structure allows the first parallelogram link mechanism and the second parallelogram link mechanism to be easily and simultaneously locked at the same time, regardless of the swing position of the swing arm. Further, the free displacement of the first parallelogram link mechanism and the second parallelogram link mechanism can be easily and simultaneously locked by a simple operation such as rotating the cam surface by a single lock operation portion.

(Claim 5 )
(h) a base slide guide whose slide arm is fixed to the lift base of the lift base, an intermediate slide body supported by the base slide guide so as to be movable in the X-axis direction along the longitudinal direction of the vehicle, and an intermediate slide The front end slide body is supported by the body so as to be movable in the Y-axis direction along the vehicle width direction of the vehicle. The front end slide body includes a vehicle support. Accordingly, the vehicle support is positioned on the side of each tire that is moved in the longitudinal direction of the vehicle by the movement of the intermediate slide body and is determined according to the wheel base of the vehicle. Next, the vehicle support is quickly positioned below the front and rear two positions at the bottom of each tire by being displaced in the vehicle width direction of the vehicle by the movement of the tip end slide body. Thereafter, when each slide arm is raised synchronously, each vehicle support comes into contact with the front and rear two positions of each tire, and the entire vehicle can be lifted up by sandwiching each tire from the front and rear.

FIG. 1 is a schematic diagram illustrating a vehicle lift device according to a first embodiment. FIG. 2 is a schematic diagram showing a lift-up start stage of the vehicle lift device. FIG. 3 is a schematic diagram showing a lift-up completion stage of the vehicle lift device. FIG. 4 is a plan view showing the swing arm. FIG. 5 is a side view showing the swing arm. FIG. 6 is a plan view showing first and second parallelogram link mechanisms of the swing arm. FIG. 7 is a plan view showing the arm lock means. FIG. 8 is a sectional view showing the arm lock means. FIG. 9 is a perspective view illustrating a standby state of the vehicle lift device according to the second embodiment. FIG. 10 is a perspective view showing a moving state of the vehicle lift device along the longitudinal direction of the vehicle. FIG. 11 is a perspective view showing a moving state of the vehicle lift device along the vehicle width direction of the vehicle. FIG. 12 is a perspective view showing a lift-up operation state of the vehicle lift device.

Example 1 (FIGS. 1 to 8)
The vehicle lift device 100 shown in FIGS. 1 to 3 includes a pair of left and right lifting platforms 10 and 10 installed on the left and right of a maintenance work site A having a maintenance work position where the maintenance target vehicle 1 is introduced and stopped. Have. Each lifting platform 10 is fixedly erected on the floor surface by anchor bolts or the like planted on the floor surface of the maintenance workshop A, and is provided with driving means (hydraulic cylinder, electric motor, etc.) not shown. The lifting platform 11 is provided. In addition, let the direction along the vehicle width direction orthogonal to the front-back direction of the vehicle 1 introduce | transduced and stopped at the maintenance work position of the maintenance work place A be a left-right direction.

  The vehicle lift device 100 includes a pair of front and rear swing arms 20 and 50 supported at two front and rear positions of a lifting platform 11 provided in each lifting platform 10. The swing arms 20 and 50 can be moved up and down together with the lifting platform 11 when the lifting platform 11 is lifted and lowered. The direction along the longitudinal direction of the vehicle 1 along the front-rear direction of the vehicle 1 introduced and stopped at the maintenance work position of the maintenance work site A is defined as the front-rear direction.

  Each swing arm 20 (50) is composed of a link connecting body 20A (50A) in which a plurality of links are connected, and the base link 21 (51) constituting the link connecting body 20A (50A) is connected to the lifting platform 11 of the lifting platform 10. The distal end link 22 (52) that is fixed and constitutes the link connector 20A (50A) includes the vehicle support 30 (60).

  As shown in FIG. 4, the vehicle receiver 30 (60) included in the distal end link 22 (52) of the link connector 20 </ b> A (50 </ b> A) includes an attachment bracket 31 (61) fixed to the distal end link 22 (52). The front and rear levers 31F and 31R (61F and 61R) are inserted into and fixed to mounting holes provided in the mounting bracket 31. The front and rear levers 31F and 31R (61F and 61R) are formed of a straight rod-like body having a circular cross section, and are respectively viewed from below at the two front and rear positions of the lower part (lower half part) of the front tire 2F (rear tire 2R) of the vehicle 1. Touch. The mounting bracket 31 (61) is for the front lever 31F (front lever 61F) so that the insertion position of the levers 31F, 31R (61F, 61R) can be selected according to the tire diameter of the vehicle 1. It is provided with two or more mounting holes 32F (62F) and two or more mounting holes 32R (62R) for the rear lever 31R (rear lever 61R).

  As shown in FIGS. 1 and 4 to 6, the link connector 20A (50A) includes a base link 21 (51), a tip link 22 (52), an intermediate link 23 (53), and a first link 24 (54). ), The second link 25 (55), the first sublink 24S (54S), and the second sublink 25S (55S). The lengths of the links of the base link 21 (51), the tip link 22 (52), and the intermediate link 23 (53) are the same, and the first link 24 (54) and the first sublink 24S (54S) The lengths of the links are the same, and the lengths of the links of the second link 25 (55) and the second sublink 25S (55S) are the same. However, the length of the first link 24 and the first sub-link 24S of the swing arm 20 and the first link 54 of the swing arm 50 are prevented in order to prevent vibration or the like when the front swing arm 20 and the rear swing arm 50 are moved up and down. The length of the first sub link 54S is different from the length of the second link 25 and the second sub link 25S of the swing arm 20, and the length of the second link 55 and the second sub link 55S of the swing arm 50 is different. I'm making things.

  As shown in FIG. 6, the link link 20A (substantially the same as 50A) includes a base link 21, a first link 24, an intermediate link 23, and a first sub-link 24S as a first parallelogram link mechanism. The intermediate links 23, the second links 25, the tip links 22, and the second sublinks 25S form a second parallelogram link mechanism L2 while being connected by the connecting shafts P1 to P4 so as to form L1. Thus, they are connected by connecting shafts P2, P5, P6, and P3. At this time, the orientation of the vehicle support 30 provided on the distal end link 22 is arranged in advance or in parallel with the longitudinal direction (front-rear direction of the vehicle) of the vehicle 1 stopped at the maintenance work position of the maintenance work site A. Shall.

  The link connector 20A (50A is substantially the same) can form each link 21-25, 24S, 25S by a flat plate material or a pipe material. In this embodiment, the first link 24, the second link 25, The first sublink 24S and the second sublink 25S are formed of a round pipe material.

In other words, the link connecting body 20A constituting the swing arm 20 (the link connecting body 50A constituting the swing arm 50 is substantially the same) includes the first parallelogram link mechanism L1 and the second parallelogram link mechanism L2. The intermediate link 23 of the first parallelogram link mechanism L1 and the intermediate link 23 of the second parallelogram link mechanism L2 are used in common, and the first parallelogram link mechanism L1. The base link 21 is fixed to the lifting platform 11 of the lifting platform 10, and the vehicle support 30 is provided on the distal end link 22 of the second parallelogram link mechanism L2. Thereby, no matter how the swing arm 20 swings, the distal end link 22 provided with the vehicle support 30 always moves in parallel with the base link 21 fixed to the lifting platform 11 of the lifting platform 10. Therefore, if the orientation of the vehicle support 30 provided at the tip link 22 is previously arranged in parallel or orthogonal to the longitudinal direction of the vehicle (front-rear direction of the vehicle) stopped at the maintenance work position of the maintenance work place A. The vehicle receiver 30 moves in parallel regardless of how the swing arm 20 swings.

  Therefore, when swinging the swing arm 20 with the manual operation force of the operator holding the tip link 22 of the swing arm 20 (50), the vehicle support 30 is easily positioned at an appropriate position along the longitudinal direction of the vehicle, And it is easily positioned at an appropriate position along the vehicle width direction of the vehicle. As a result, the front and rear levers 31F and 31R of the vehicle arm 30 of the swing arm 20 are moved from the standby position shown in FIG. 1 to the lift-up start stage shown in FIG. In the present embodiment, it can be reliably and easily positioned at the receiver insertion position slightly spaced downward with respect to the front and rear two positions of the tire 2F of the vehicle 1 (FIG. 2). After that, all four swing arms 20 and 50 are raised synchronously together with the lift 11 provided on the left and right lift stands 10, so that each vehicle support 30 (60) included in each swing arm 20 (50). The front and rear levers 31F and 31R (61F and 61R) are brought into contact with the front and rear two positions which are the planned lift portions defined at the lower portions of the respective tires 2F (2R), and the levers 31F and 31R (61F and 61R) are The tire 2F (2R) is positioned at the lift-up start stage where the tire 2F (2R) is sandwiched from the front and rear.

  The vehicle lift device 100 positions the vehicle receivers 30 and 60 of the front and rear swing arms 20 and 50 supported by the elevators 11 included in the left and right elevators 10 in the above-described lift-up start stage (FIG. 2). After that, by raising the lifting platform 11 of each lifting platform 10, the swing arms 20 and 50 that are lifted together with the lifting platform 11 lift the vehicle 1 through the vehicle receivers 30 and 60 to complete the lift-up stage. (FIG. 3).

Therefore, the vehicle lift device 100 has the following effects.
(a) Each vehicle receiver 30 (60) provided at the tip of each arm 20 (50) supported by the elevator 11 provided in each of the left and right elevator bases 10 includes the longitudinal direction and the vehicle width of the vehicle. The front and rear levers 31F and 31R (61F and 61R) contact the lower front and rear surfaces of the tire 2F (2R) of the vehicle from below. Further, the front and rear levers 31F, 31R (61F, 61R) of each vehicle receiver 30 (60) are positioned at a standby position on the side of each tire 2F (2R) of the vehicle parked at the maintenance work position of the maintenance workshop A. When the arms 20 (50) are moved upward in the vehicle width direction from the standby position and positioned at the receiving member insertion positions that are separated from the lower front and rear surfaces of the tires 2F (2R) from below, The vehicle can be lifted up by sandwiching each tire 2F (2R) from the front and rear.
Therefore, each vehicle receiver 30 (60) provided at the tip of each arm 20 (50) is simply placed at a standby position on the side of each tire 2F (2R) of the vehicle parked at the maintenance work position of the maintenance work place A. By positioning, it is possible to smoothly start the lift-up start work .
Further, the front and rear levers 31F, 31R (61F, 61R) of each vehicle receiver 30 (60) are respectively connected to the tire 2F (2R) of the vehicle parked at the maintenance work position from the side thereof. It is smoothly set by inserting it into the front and rear surfaces of the lower part of (2R) at positions separated from below . The front and rear levers 31F and 31R (61F and 61R) of each vehicle support 30 (60) can be easily positioned at the lift-up start work position to start the lift-up of the vehicle.

  The operator does not need to look into the lower part of the dark vehicle 1 or take a tight working posture to lower his head in order to find the lift point at the lower part of the vehicle 1. The vehicle 1 can be easily lifted up by matching the front and rear two positions at the bottom of each tire 2F (2R) from the side of the vehicle.

  (b) Since the lifting platform 10 that supports each swing arm 20 (50) is fixedly installed in the maintenance work place A, each vehicle provided in the tip link 22 (52) of each swing arm 20 (50). The part which contacts each tire 2F (2R) of the receiving tool 30 (60) can be stably set to a horizontal posture. Therefore, even if there is a water gradient on the floor surface of the maintenance workshop A, each vehicle receiver 30 (60) is not likely to tilt forward along the water gradient, and each tire 2F (2R) is stably sandwiched from the front and rear. Thus, the entire vehicle 1 can be lifted up stably.

  (c) Each vehicle receiver 30 (60) provided on the distal end link 22 (52) of each swing arm 20 (50) is correctly displaced in the vehicle width direction, whereby the vehicle receiver 30 (60). The front and rear levers 31F, 31R (61F, 61R) are set correctly in parallel with the front and rear surfaces of each tire 2F (2R) and come into contact with the front and rear surfaces, and each tire 2F (2R ) Can be stably sandwiched by the front and rear levers 31F and 31R (61F and 61R) of the vehicle receiver 30 (60), and the entire vehicle 1 can be lifted up stably.

  On the other hand, when the front and rear levers 31F and 31R (61F and 61R) of each vehicle receiver 30 (60) are set at positions oblique to the front and rear surfaces of each tire 2F (2R), each tire 2F ( Only the edge portion in the width direction of 2R) comes into contact with each lever 31F, 31R (61F, 61R), and the contact length between each tire 2F (2R) and each lever 31F, 31R (61F, 61R) is small. The front and rear levers 31F and 31R (61F and 61R) make the tire 2F (2R) sandwiched unstable, and the tire 2F (2R) whose turning angle is not locked becomes the front and rear levers 31F and 31R (61F). , 61R) and the tires 2F (2R) are lowered with respect to the front and rear levers 31F, 31R (61F, 61R) during lift-up. There is a risk of causing.

  (d) Each vehicle receiver 30 (60) can be applied to tires 2F (2R) of various sizes by making it possible to change the mounting interval of the front and rear levers 31F, 31R (61F, 61R).

(e) A link connecting body 20A constituting the swing arm 20 (the same applies to the swing arm 50) is configured to include the first parallelogram link mechanism L1 and the second parallelogram link mechanism L2, and the first The intermediate link 23 of the parallelogram link mechanism L1 and the intermediate link 23 of the second parallelogram link mechanism L2 are made common, and the base link 21 of the first parallelogram link mechanism L1 is connected to the lifting platform 10. The vehicle holder 30 is provided on the tip link 22 of the second parallelogram link. Therefore, no matter how the swing arm 20 swings, the tip link 22 is always translated relative to the base link 21 fixed to the lifting platform 11 of the lifting platform 10, and the vehicle holder 30 provided on the distal link 22 is provided. Can be translated . As a result, the vehicle receiver 30 can be positioned on the side of the tire 2F in the longitudinal direction of the vehicle, and the vehicle receiver 30 can be positioned at an appropriate position along the vehicle width direction. In other words, the levers 31F and 31R at the front and rear of the vehicle receiver 30 are lifted up as shown in FIG. 2 from the standby position shown in FIG. 1 at the lower part of the tire 2F), it can be reliably and easily positioned at a receiving tool insertion position slightly spaced downward.

  Further, in the lift device 100 for a vehicle, the link connecting body 20A constituting the swing arm 20 (the link connecting body 50A constituting the swing arm 50 is substantially the same) is free of the first parallelogram link mechanism L1. Arm locking means 40 (70) for locking the displacement and for locking the free displacement of the second parallelogram linkage L2 is provided.

  The arm lock means 40 (70 is substantially the same) is configured by the following i to iii as shown in FIGS.

  i. The first stop 41A provided in the second sub-link 25S so as to be able to advance and retreat, and the first engagement element 41B fixedly provided in the first sub-link 24S can be engaged with each other.

  ii. The second stop 42A provided in the second sub link 25S so as to be able to advance and retreat, and the second engaging element 42B fixedly provided in the intermediate link 23 can be engaged with each other.

  iii. With the lock operating portion 43 provided on the second sub link 25S, the first stop 41A is engaged with the first engagement element 41B, and the second stop 42A is engaged with the second engagement element 42B. The free displacement of the first parallelogram link mechanism L1 and the free displacement of the second parallelogram link mechanism L2 are simultaneously locked.

  That is, the central axis of the connecting shaft P3 connecting the three members of the end plate E integrated with the intermediate link 23, the end plate F integrated with the first sub-link 24S, and the end tube G integrated with the second sub-link 25S. Around the arcuate external teeth 1b of the first engaging element 41B fixedly provided on the end plate F integrated with the first sub-link 24S, and on the end plate E fixedly provided on the intermediate link 23. The arcuate external teeth 2b of the two engaging elements 42B are arranged side by side in the vertical direction (FIG. 8). The connecting shaft P3 passes through the upper plate G1 and the lower plate G2 of the end cylinder G integrated with the second sublink 25S, the end plate E of the intermediate link 23, and the end plate F of the first sublink 24S. It is held by a fixed body 44 screwed to the upper plate G1. Between the end plate E of the intermediate link 23 and the end plate F of the first sub-link 24S, the above-described first engaging element 41B and second engaging element 42B screwed to the end plates E and F are provided. A space for accommodation is formed, and a collar 45 inserted around the connection axis P3 is disposed.

  The end cylinder G is bolted to a cover plate K welded to the second sub-link 25S. Inside the end cylinder G, a first stop 41A and a second stop 42A are juxtaposed vertically. Is contained. The first stationary element 41A is pressed by an elastic spring 41S supported on the back surface of the cover plate K so that the inner teeth 1a can be engaged with the outer teeth 1b of the first engaging element 41B facing each other. The second stationary element 42A is pressed so as to be able to mesh with the outer teeth 2b of the second engaging element 42B facing the inner teeth 2a by a spring 42S supported on the back surface of the cover plate K (FIG. 8).

  On the other hand, in the lock operation portion 43, the cam surface 43A provided at the distal end abuts on the end surface of the end nut 46 screwed to the opening end of the hollow second sub link 25S, and the distal end portion of the lock operation portion 43 The tension rod 47 pin-connected to the second sub link 25S is inserted into the hollow portion. The aforementioned first stop element in which a small-diameter connecting pin 49 provided on a connecting plate 48 connected to the insertion end of the pulling rod 47 by a split pin 47A is juxtaposed vertically inside the end cylinder G of the second sublink 25S. 41A and the second stationary element 42A are engaged in long holes. When the cam surface 43A of the lock operation portion 43 is in the lock operation position as shown in FIG. 7, the stationary elements 41A and 42A mesh with the engagement elements 41B and 42B by the elastic force of the elastic springs 41S and 42S, The free displacement of the first parallelogram link mechanism L1 and the free displacement of the second parallelogram link mechanism L2 are simultaneously locked. When the cam surface 43A of the lock operation portion 43 is rotated 90 degrees from the lock operation position shown in FIG. 7 on the end surface of the end nut 46 and is changed to the unlock position, the lock operation portion 43 is connected to the pulling rod 47. After the plate 48 is pulled and the connecting pins 49 provided on the connecting plate 48 play and move within the long holes of the respective retainers 41A and 42A by a certain distance, the springs 41S and 42S are compressed while the retainers 41A and 41S are compressed. 42A is pulled away from the meshing position with the corresponding engagement elements 41B and 42B, so that the first and second parallelogram link mechanisms L1 and L2 can be freely displaced.

Therefore, the vehicle lift device 100 has the following effects in addition to the effects (a) to (e) described above.
(f) When the vehicle receiver 30 provided in the tip link 21 of the swing arm 20 (same for the swing arm 50) is positioned at the receiver insertion position below the front and rear two positions below the tire 2F, the arm lock means 40 is The free displacement of the first parallelogram link mechanism L1 and the second parallelogram link mechanism L2 is locked, and as a result, the free swing of the swing arm 20 can be locked easily and reliably, and the vehicle receiver 30 can be locked. It can be easily fixed to the front and rear two positions of the lower portion of the tire 2F.

  (g) The arm lock means 40 enables the first stop 41A provided to be able to advance and retreat in the second sub-link 25S and the first engagement element 41B fixed to the first sub-link 24S to engage with each other. At the same time, the second stop 42A provided so as to be able to advance and retreat in the second sub-link 25S and the second engagement element 42B fixedly provided in the intermediate link 23 can be engaged with each other, and provided in the second sub-link 25S. The lock operating portion 43 causes the first stop 41A to engage with the first engagement element 41B, and causes the second stop 42A to engage with the second engagement element 42B, thereby freeing the first parallelogram link mechanism L1. And the free displacement of the second parallelogram link mechanism L2 can be locked simultaneously. As a result, with a compact structure, the free movement of the first parallelogram link mechanism L1 and the second parallelogram link mechanism L2 can be easily and simultaneously locked regardless of the swing position of the swing arm 20. . Further, the simple displacement of the first parallelogram link mechanism L1 and the second parallelogram link mechanism L2 can be simplified simultaneously by a simple operation such as rotating the cam surface 43A by the single lock operation portion 43. Can lock.

Example 2 (FIGS. 9 to 12)
The vehicle lift device 200 shown in FIGS. 9 to 12 is a pair of left and right lifting platforms installed on the left and right of the maintenance work place A having a maintenance work position where the maintenance target vehicle 1 (not shown) is introduced and stopped. 110, 110. 1 to 4 show only one lifting platform 110 installed on the right side of the maintenance workshop A.

  Each lifting platform 110 is fixedly erected on the floor surface by anchor bolts or the like planted on the floor surface of the maintenance workshop A, and is provided with driving means (not shown) (hydraulic cylinder, electric motor, etc.). The lifting platform 111 is provided. In addition, let the direction along the vehicle width direction orthogonal to the front-back direction of the vehicle 1 introduce | transduced and stopped at the maintenance work position of the maintenance work place A be a left-right direction.

  The vehicle lift device 200 includes a pair of front and rear slide arms 120 and 150 that are supported at two front and rear positions of a lift 111 provided in each lift base 110. The slide arms 120 and 150 can be moved up and down together with the lifting platform 111 when the lifting platform 111 is moved up and down. The direction along the longitudinal direction of the vehicle 1 along the front-rear direction of the vehicle 1 introduced and stopped at the maintenance work position of the maintenance work site A is defined as the front-rear direction.

  The slide arms 120 and 150 are movable in the X-axis direction along the longitudinal direction of the vehicle 1 by a base slide guide 121 (151) fixed to the lift base 111 of the lift base 110 and the base slide guide 121 (151). From the supported intermediate slide body 122 (152) and the front end slide body 123 (153) supported by the intermediate slide body 122 (152) so as to be movable in the Y-axis direction along the vehicle width direction of the vehicle 1. Become.

  In this embodiment, the base slide guide 121 (151) extends in the X-axis direction with one end fixed to the front end surface (rear end surface) of the lifting platform 111, and the other end is a free end. It has a beam shape and includes upper and lower guide rails 121R (151R) arranged along the X-axis direction.

  The intermediate slide body 122 (152) includes a rectangular cylindrical slide frame 122F (152F), and is guided by the guide rail 121R (151R) of the base slide guide 121 (151) so as to be movable in the X-axis direction.

  The front end slide body 123 (153) has a beam shape that is inserted through the outside of the rectangular cylindrical slide frame 122F (152F) of the intermediate slide body 122 (152) in a penetrating manner, and is arranged along the Y-axis direction. The upper and lower guided rails 123 </ b> R (153 </ b> R) are provided, and the upper and lower guided rails 123 </ b> R (153 </ b> R) are Y-axis driven by guide portions (not shown) provided on the upper and lower inner surfaces of the rectangular cylindrical slide frame 122 </ b> F (152 </ b> F). Guided to move in the direction.

  Each slide arm 120 (150) includes a vehicle support 130 (160) on the distal end surface of the distal end slide body 123 (153) facing the maintenance work place A.

  The vehicle support 130 (160) is fixed by being inserted into a mounting bracket 131 (161) fixed to the front end surface of the front end slide body 123 (153) and a mounting hole provided in the mounting bracket 131 (161). And front and rear levers 131F and 131R (161F and 161F). The front and rear levers 131F and 131R (161F and 161F) are formed of a straight rod-like body having a circular cross section, and are respectively applied to the front and rear two positions of the lower part (lower half) of the front tire 2F (rear tire 2R) of the vehicle 1 from below. Touch. The mounting bracket 131 (161) is for the front lever 131F (front lever 161F) so that the insertion position of the levers 131F, 131R (161F, 161F) can be selected according to the tire diameter of the vehicle 1. At least one mounting hole 132F (162F) is provided, and two or more mounting holes 132R (162R) for the rear lever 131R (rear lever 161R) are provided.

  Therefore, according to the vehicle lift device 200, the vehicle support 130 (160) is moved in the longitudinal direction of the vehicle 1 by the movement of the intermediate slide body 122 (152) and depends on the wheel base of the vehicle 1. It is positioned on the side of each tire 2F (2R) to be determined. Next, the vehicle receiver 130 (160) is displaced in the vehicle width direction of the vehicle 1 by the movement of the tip end slide body 123 (153), so that the front and rear two positions at the lower portion of each tire 2F (2R). Quickly positioned below. Thereafter, when each slide arm 120 (150) is raised synchronously, each vehicle support 130 (160) comes into contact with the front and rear two positions of each tire 2F (2R), and each tire 2F (2R) is moved from the front and rear. The entire vehicle 1 can be lifted up by being sandwiched.

  Thereby, even if it exists in the vehicle lift apparatus 200, there exists an effect similar to the above-mentioned (a)-(d) in the vehicle lift apparatus 100, and the vehicle 1 is lifted up simply by the vehicle holder 130 (160). can do.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention.

  According to the present invention, when a vehicle support is provided at the tip of each arm supported by each lifting platform provided in the pair of left and right lifting platforms of the vehicle lift device, the vehicle can be lifted up easily by this vehicle support. Can do.

DESCRIPTION OF SYMBOLS 1 Vehicle 2F, 2R Tire 10 Lifting stand 11 Lifting stand 20, 50 Swing arm 20A, 50A Link connection body 21, 51 Base link 22, 52 End link 23, 53 Intermediate link 24, 54 First link 25, 55 First 2 links 24S, 54S 1st sublinks 25S, 55S 2nd sublinks 30, 60 Vehicle receivers 31F, 31R, 61F, 61R Front and rear levers 40, 70 Arm locking means 41A First stop 41B First engagement element 42A First 2 stop 42B 2nd engaging element 43 lock operation part 100 lift device 110 for vehicles lifting platform 111 lifting platform 120, 150 slide arm 121, 151 base slide guide 122, 152 intermediate slide body 123, 153 tip slide body 130, 160 Vehicle receiver 200 Vehicle lift device L1 First parallel Sides shaped link mechanism L2 second parallelogram link mechanism

Claims (5)

A pair of left and right lifting platforms installed on the left and right of the maintenance workshop of the target vehicle;
In the vehicle lift device, which is supported at each of the two front and rear positions of the lifting platform included in each lifting platform and has a pair of front and rear arms that can be lifted together with the lifting platform,
At the tip of each arm is equipped with a vehicle holder that contacts the front and rear two positions of the lower part of the tire of the vehicle,
Each vehicle support is a vehicle lift device that is movable in the longitudinal direction and the vehicle width direction of the vehicle, and has front and rear levers that are in contact with the front and rear two surfaces of the lower part of each tire of the vehicle from below. There,
The front and rear levers of each vehicle support are positioned at the standby position on the side of each tire of the vehicle parked at the maintenance work position in the maintenance workshop, and moved from the standby position in the vehicle width direction to the front and rear of each tire. It is configured to be set parallel to the front and rear two surfaces of the lower part of each tire and to contact each of the two front and rear surfaces from below, with each arm rising in a state where it is positioned at the receiving device insertion position separated from the lower surface on the two surfaces And a vehicle lift device that enables the vehicle to be lifted by sandwiching each tire from the front and rear . Each arm consists of a swing arm,
Each swing arm is composed of a link coupling body in which a plurality of links are coupled, the base link constituting the link coupling body is fixed to the lifting platform of the lifting platform, and the distal end link constituting the link coupling body includes a vehicle holder. ,
The link link is composed of seven links, a base link, a tip link, an intermediate link, a first link, a second link, a first sublink, and a second sublink. The base link, the tip link, and the intermediate link The lengths of the links are the same, the lengths of the links of the first link and the first sublink are the same, the lengths of the links of the second link and the second sublink are the same,
The base link, the first link, the intermediate link, and the first sublink are connected to form a first parallelogram link mechanism, and the intermediate link, the second link, the tip link, and the second sublink. The vehicle lift device according to claim 1 , wherein the lift devices are connected so as to form a second parallelogram link mechanism. The link connector is
The vehicle lift device according to claim 2 , further comprising arm lock means for locking the free displacement of the first parallelogram link mechanism and for locking the free displacement of the second parallelogram link mechanism. . The arm locking means is
While enabling the 1st stop provided in the 2nd sublink so that advancement / retraction was possible, and the 1st engagement element fixedly provided in the 1st sublink,
The second stationary member provided in the second sub-link so as to be able to advance and retreat and the second engaging member provided fixedly in the intermediate link can be engaged with each other,
The first stop is engaged with the first engagement element and the second retention element is engaged with the second engagement element, and the first parallelogram link mechanism of the first parallelogram link mechanism is engaged. The vehicle lift device according to claim 3 , wherein the free displacement and the free displacement of the second parallelogram link mechanism can be simultaneously locked. Each arm comprises a slide arm,
Each slide arm includes a base slide guide fixed to the lift base of the lift base, an intermediate slide body supported by the base slide guide so as to be movable in the X-axis direction along the longitudinal direction of the vehicle, and an intermediate slide body The vehicle lift device according to claim 1 , further comprising: a tip end slide body supported so as to be movable in the Y-axis direction along the vehicle width direction of the vehicle, wherein the tip end slide body includes a vehicle support.

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