JPH10292659A - Hoistway guide mechanism of parking device and pit type parking device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoistway guide mechanism, which shakes little when raising and lowering a pallet and so does not change the position of the pallet, and a parking device. SOLUTION: This parking device includes a guide rail 51, which has a pair of guide surfaces 61, 62 provided along the rising and falling direction of pallets, and a guide element 53 which has a pair of upper and lower guide rollers 63, 64 rolling within the pair of guide surfaces 61, 62 of the guide rail 51. The guide element 53 has an engaging part 74 for engagement with the pallet and has lifting parts 68, 69 to which a drive chain raising and lowering the pallet is connected, the engaging part 74 and lifting parts 68, 69 of the guide element 53 being held in relative positions such that rotary moment M is produced whereby the pair of upper and lower guide rollers 63, 64 are pressed against the pair of guide surfaces 61, 62 of the guide rails 51, 52 by the lifting force F2 of the drive chain and the load F1 of the pallet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking device having a structure in which a pallet on which a vehicle rides is moved up and down so that two or more vehicles can be parked in a vertical direction. The present invention relates to a mechanism and a pit type parking device using the lifting guide mechanism.

[0002]

2. Description of the Related Art A parking device having this type of structure includes a lifting drive device for raising and lowering a pallet on which a vehicle rides;
An elevating guide mechanism for guiding the pallet in the elevating direction. A conventional elevating guide mechanism includes a guide rail extending along a pallet elevating direction and a roller provided on the pallet guided by the guide rail.

[0003]

In this conventional elevating guide mechanism, the guide rail and the roller are provided in order to limit the dimensional accuracy of the apparatus during construction and to ensure that the pallet moves up and down smoothly. There is a gap between them. The pallet swings in the horizontal direction by an amount corresponding to this gap. That is, such a conventional elevating guide mechanism regulates the horizontal position of the pallet to determine the elevating path, but does not have a function of suppressing pallet swing. If the pallet swings during the ascent and descent, the user of the parking device may feel uneasy. In particular, when the pallet shakes when the vehicle enters the vehicle, the shake is increased via the suspension of the vehicle, and gives the driver an uneasy feeling.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide an ascending and descending guide mechanism which can suppress the sway of a pallet when ascending and descending. In addition, it is another object of the present invention to provide a preferred pit type parking device using the lifting guide mechanism.

[0005]

The invention according to claim 1 of the present invention for solving the above-mentioned problems is a lifting guide mechanism for guiding a pallet on which a vehicle rides in a lifting direction,
A guide rail having a pair of guide surfaces provided along the vertical direction of the pallet, and a guide body having a pair of upper and lower guide rollers rolling within a pair of guide surfaces of the guide rail, wherein the guide body is An engagement portion that engages with the pallet, and a lifting portion that connects a drive chain that raises and lowers the pallet. The engagement portion and the lifting portion of the guide body are connected to a lifting force of the drive chain. The positional relationship is such that a rotational moment is generated to press each of the pair of upper and lower guide rollers against each of the pair of guide surfaces of the guide rail by the load of the pallet.

According to a second aspect of the present invention, in the first aspect, the pair of upper and lower guide rollers are arranged at predetermined intervals so that their axes are close to each of the pair of guide surfaces of the guide rail. Do it.

According to a third aspect of the present invention, in the first aspect, the lifting portion of the guide body has a hook shape having an arcuate surface engageable with a connecting pin attached to the drive chain.

According to a fourth aspect of the present invention, in the first aspect, the engaging portion of the guide body has a concave shape that opens upward, and the hook can be engaged with the pallet in a manner intersecting with the concave engaging portion. Is provided.

According to a fifth aspect of the present invention, there is provided a passage step extending in the depth direction of a pit dug from the ground,
An elevating body that is provided in the pit between the passage steps so as to be able to ascend and descend, and is combined with a pallet on which a vehicle rides in a plurality of upper and lower stages; a balance chain for maintaining a predetermined posture during the elevating operation of the elevating body; A lift drive device that is installed on a support that supports the passage step and includes an endless drive chain that lifts one position of the lift body; anda pit type parking device, wherein the lift drive device is mounted on the support. A guide rail having a pair of guide surfaces formed along the guide rail, and a guide body having a pair of upper and lower guide rollers that rolls within the pair of guide surfaces of the guide rail, wherein the guide body is the elevating body And a suspending portion engageable with a connecting pin attached to the drive chain, and the engaging portion and the suspending portion are suspended by the drive chain. Each of said pair of upper and lower guide rollers in the load of increasing force to the lifting body and positional relationship to generate a rotational moment which presses each of the pair of the guide surfaces of the guide rail.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the driving device is configured such that the lifting drive device is endlessly wound around a support for supporting a passage step between the lifting and lowering members installed adjacently. A chain, and a pair of elevating guide mechanisms located on both sides of the drive chain to guide the elevating body up and down, and a connecting pin attached to the endless drive chain is provided on one of the two sides. Position
The pair of lifting guide mechanisms can be alternately engaged with the lifting portions of the guide bodies.

According to a seventh aspect of the present invention, in accordance with the sixth aspect, the lifting drive device including the lifting guide mechanism is disposed on the column installed near the entry side of the vehicle on the pallet.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing the structure and operation of the lifting guide mechanism of the present invention.

The lifting guide mechanism 50 of the present invention includes a guide rail 51 and a guide body 53. The guide rail 51 has a pair of guide surfaces 61 and 62 provided along the vertical direction of the pallet 22. The guide body 53 includes a pair of upper and lower guide rollers 63 and 64 that roll inside the pair of guide surfaces 61 and 62, an engaging portion 74 that engages with the pallet 22, and a drive chain 49 that raises and lowers the pallet 22.
And a lifting portion 68 for connecting The engaging portion 74 and the lifting portion 68 are located at positions related to each other by a distance L in the horizontal direction.

The pallet load F1 acts downward on the engaging portion 74 of the guide body 53. The pallet lifting force F2 as a reaction force of the pallet load F1 is
Acts upwardly on the lifting portion 68 of the first member. When the downward pallet load F1 and the upward lifting force F2 are shifted in the horizontal direction, the moment M acts on the entire guide body 53. This moment M inclines the guide body 53, presses the upper and lower guide rollers 63 and 64 against the guide surfaces 61 and 62, and moves the upper and lower guide rollers 63 and 64.
Rolls on the guide surfaces 61 and 62 without any gap. Therefore, the swing caused by the gap of the lift guide mechanism is suppressed at the time of lifting and lowering. The lifting guide mechanism of the present invention suppresses the swing of the pallet by pressing the guide roller against the guide surface using the load of the pallet.
When the vehicle is placed on the pallet, the guide roller can be pressed against the guide surface with a force greater than the weight of the vehicle.

Even if the attitude of the guide body 53 changes due to the moment M, the pallet 22 and the guide body 53 are formed separately, so that the attitude of the pallet 22 is maintained. JP-A-2-27067 or Japanese Utility Model Laid-Open No. 3-
Japanese Patent No. 108759 discloses that the upper and lower rollers engaging with the guide rail are mounted on the pallet side so that the center of gravity of the pallet on which the vehicle is mounted and the guide rail are shifted in the front-rear direction. There has been proposed an elevating guide mechanism that eliminates a gap between the upper and lower rollers and the guide rail by tilting the guide rail forward.
However, at the same time as eliminating the gap between the roller and the guide rail, the inconvenience of changing the attitude of the pallet occurs. Since the lift guide mechanism 50 of the present invention is provided separately from the pallet 22, the guide body 53 of the lift guide mechanism 50 is provided.
Does not affect the attitude of the pallet 22.

In FIG. 1, the engaging portion 74 is provided on the outer side of the pallet 22 from the guide rail 51.
The engaging portion 74 is moved to the pallet 22 inside the guide rail 51.
Side, a larger moment M can be generated. In short, the positional relationship between the engaging portion 74 and the lifting portion 68 is determined by the guide rollers 63 and 64 and the guide surfaces 61 and 62.
It is sufficient if the positional relationship is such that a rotational moment is generated in the guide body 53 in the direction in which the gap is eliminated. Further, the present invention is not limited to the combination of the guide rollers 63 and 64 having flat rolling surfaces and the guide surfaces 61 and 62 having flat running surfaces.
It may be a combination of a guide roller having a concave groove and a plate-shaped guide surface fitted into the concave groove.

The axis of the upper guide roller 63 has a distance ε1 toward the pallet 22 with respect to the center line 70 of the guide rail 51.
And the axis of the lower guide roller 64 is
It is provided eccentrically by a distance ε2 outside the pallet 22 with respect to the center line 70 of the guide rail 51. Therefore, the upper guide roller 63 approaches one guide surface 62, and the lower guide roller 64 approaches the other guide surface 61. Thereby, it is possible to prevent the guide body 30 having received the rotational moment M from interfering with the guide surfaces 61 and 62 of the guide rail 51.

The lifting portion 68 of the guide body 53 has a hook-shaped arcuate surface 71, and this arcuate surface 71
9 is engaged with the connecting pin 72 provided on the base member 9. This allows
Even if the guide body 53 is tilted by the action of the moment M, only the relative catching position between the connecting pin 72 and the arc surface 71 changes. Therefore, the action of the moment M is not transmitted to the drive chain 49, so that no extra load is applied to the drive chain 49.

The above-mentioned lifting guide mechanism 50 can be constructed as a specific example as shown in a perspective view of FIG. 2, for example.

The guide rail includes first and second guide rails 51 and 52, each having a concave cross section. The concave characters of the first guide rail 51 and the concave characters of the second guide rail 52 face each other. This first,
A pair of guide surfaces 6 whose inner surfaces of the concaves of the second guide rails 51 and 52 extend vertically and face each other.
1, 62.

A guide body 53 is located between the first and second guide rails 51 and 52. The guide body 53 has an upper guide roller 63 and a lower guide roller 64 projecting sideways, and the first upper and lower plate members 6 facing the first guide rail 51.
5, an upper guide roller 63 and a lower guide roller 64 projecting sideways, and a second upper / lower plate member 66 facing the second guide rail 52, and a first upper / lower plate member 65 and a second upper / lower plate member 66. A horizontal plate member 67 spanning the space, a first hook member 68 protruding from the horizontal plate member 67 and closer to the first upper and lower member 65, and a second hook member protruding from the horizontal plate member 67; The second hook member 69 is closer to the upper and lower members 66.

The upper guide roller 63 and the lower guide roller 64 of the first upper / lower member 65 are guided vertically by a pair of guide surfaces 61 and 62 facing the first guide rail 51. The upper guide roller 63 and the lower guide roller 64 of the second upper / lower member 66 are guided vertically by a pair of guide surfaces 61 and 62 facing the second guide rail 52.

The first and second lifting portions 6 of the guide body 53
Each of the hooks 8 and 69 has a hook-shaped arcuate surface 71 which engages with connecting pins 72 and 73 provided between the four drive chains 49.

The horizontal plate member 67 of the guide body 53 is provided with a concave engaging portion 74 that opens upward and divergently, and a hook 75 projecting from the pallet 22 in the frontage direction with respect to this engaging portion 74. They can cross and engage. The hook 75 is hooked by a claw 75a and hooked in a concave shape that opens above the engaging portion 74. Therefore, although the relative posture between the guide body 53 and the pallet 22 can be changed, the engagement point between the guide body 53 and the pallet 22 does not shift.

FIGS. 3 to 5 show the lifting guide mechanism 50.
1 shows a pit type parking device to which is applied. First, a pit-type parking device will be described, and then, a lift guide mechanism applied to the pit-type parking device will be described.

3 to 5, reference numeral 1 denotes a vehicle, 2 denotes a ground surface from which the vehicle enters and exits, 3 denotes a pit dug from the ground surface, 5 denotes a path step spanned in the depth direction of the pit, and 6 denotes a vehicle. , Pallets into which the pallets to be loaded are combined in a plurality of upper and lower stages, 7, 8, 9 are first, second, and third balance chains for maintaining the posture of the pallets in a predetermined posture.
Is a lifting drive device for engaging one position of each lifting body on both sides to lift the lifting body.

The illustrated example illustrates a type in which two sets of elevating bodies 6 each of which is formed by combining upper and lower pallets are arranged on both sides of the passage step 5 so as to be able to move up and down. However, the number of upper and lower rows and the number of rows are not limited to two rows and two rows, but can be freely set. For example, in the case of two stages and three rows, the odd-numbered lifting / lowering body can be raised / lowered by another lifting / lowering drive unit for single use, instead of the lifting / lowering drive unit used for both-side lifting / lowering bodies described below.

The passage step 5 in which the lifting drive device 10 is disposed is extended in the depth direction at the center of the pit 3. A pair of columns 16 and 17 are erected at a distance from the entry side of the passage step 5 and the bottom of the pit 3, and one is provided between the back side of the passage step 5 and the bottom of the pit 3. The support column 18 is erected. As shown in the drawing, the passage step 5 has a rear slope where the height on the entry side is higher than the height on the depth side in accordance with the rear slope of the upper and lower pallets 21 and 22. In FIG. 3, the same steps 11 and 12 having the same backward slope are provided at both ends of the pit 3 in the frontage direction.
Is provided.

The elevating body 6 is formed by connecting four places on the front side of the front pallet 21 and the lower pallet 22 in the width direction of the front pallet 22 by supporting columns 23, and is provided between the passage steps 5, 11 and the passage steps 5, 12, respectively. It is arranged. The upper and lower pallets 21 and 22 are diagonally connected to the column 23 so as to have the same rear slope. When the lift 6 is in the raised position,
When the entry side A of the entry surface 24 of the vehicle 1 of the lower pallet 22 coincides with the ground surface 2 and the elevating body 6 is at the lowered position, the entry side A of the entry surface 24 of the vehicle 1 of the upper pallet 21 is Matches. Note that a wheel stop 25 is disposed in front of the entry side 24 of the upper and lower pallets 21 and 22 on the depth side B.

In FIG. 5, the first balance chain 7
Is a two-row chain hung between the bottom of the pit 3, a pair of double sprockets 32, 33 on both sides in the frontage direction on the entry side below the elevating body 6, and a two-row chain hung between the passage steps 12. The horizontal attitude in the frontage direction of the elevating body 6 which is moved up and down by the elevating drive device 10 is maintained. The second balance chain 8 is a single-row chain hung between the bottom of the pit 3, a pair of sprockets 34 and 35 on both sides of the lower part of the elevating body 6 in the entry direction, and the passage step 5. Similarly, the third balance chain 9 has the bottom of the pit 3 and the lift 6
A pair of sprockets 3 on both sides in the approach direction at the bottom of the car
6, 37 and a single-row chain suspended between passage steps 12. The second balance chains 8, 9 are jointly
The inclined body in the entering direction of the elevating body 6 which is moved up and down by one elevating drive device 10 is maintained.

The lifting drive device 10 is provided in common to the lifting bodies on both sides in the frontage direction, and as shown in FIG. 3 and FIG. In addition, they are provided along the columns 16 and 17 that support the passage steps 5.

Next, an elevation guide mechanism applied to the above-mentioned pit type parking device will be described with reference to FIGS. 6 and 7. FIG.
The lifting guide mechanism 50R for the lifting body on the right side of the frontage direction, the lifting guide mechanism 50L for the lifting body on the left side of the frontage direction, and the lifting drive device 10 common to the lifting bodies on both sides in the frontage direction are the pillar 1
6 and 17 are provided in a concentrated manner.

First, the lifting drive will be described. As shown in FIG. 7, a pair of columns 16 and 17 made of an H-shaped steel material are erected with a gap in the front-rear direction so as to form a square space opened on both sides in the frontage direction. Between the driven shaft 41 of the quadruple sprocket and the driving shaft 42 of the quadruple sprocket (see FIG. 6),
4 rows 49a, 49b, 49c, 4 arranged in the front-rear direction
The 9d drive chain 49 is wound endlessly.

A connecting pin 72 is hooked between the first row 49a and the second row 49b, and a connecting pin 73 is hooked between the third row 49b and the fourth row 49d.
The hook 75 of the lifting guide mechanism 50 is engaged with 73. As shown in FIG. 6, a first deceleration sprocket 44 is fitted at one end of the drive shaft 42 on the entry side, and a second reduction sprocket 47 is fitted on an output shaft of a geared motor fixed to a not-shown column on the entry side. A reduction chain 48 is wound between the first and second reduction sprockets 44 and 47. The drive shaft 42 is raised upward so that the first deceleration sprocket 44 having the largest diameter does not hit the lower surface of the passage step 5.
, The lower space C of the passage step 5 is effectively used, and the height of the pit type parking device is shortened.

Next, the lifting guide mechanisms 50R and 50L provided along the columns 16 and 17 will be described with reference to FIG. By pressing and welding the four L-shaped angles 80 to the web so as to face the flanges of the columns 16 and 17,
Guide rails 51R, 52R, 51L, between the four L-angles 80 and the four flanges of the columns 16, 17;
52L are formed. Guide body 53R guided by guide rails 51R and 52R, and guide rails 51L and 52L
And the guide body 53L guided in the right and left directions. The guide body 53R can be engaged with the elevating body on the right side in the frontage direction, and the guide body 53L can be engaged with the elevating body on the left side in the frontage direction, and the details are the same as those described with reference to FIGS. The connection pins 73 and 74 of the endless drive chain 49 of the lifting drive device 10 are positioned either on the left or right side of the frontage direction by switching the traveling drive direction of the drive chain 49 in the forward or reverse direction, and are connected to the guide bodies 53R and 53L. They can be engaged alternately.

As described above, the lifting drive device 10 common to the right and left elevating members in the frontage direction and the elevating guide mechanisms 50R and 50L for each of the left and right elevating members in the frontage direction are connected to the passage step 5.
By providing along the columns 16 and 17 that support
The space inside the pit can be used effectively and the equipment can be unitized. In addition, by providing the lifting drive device 10 and the lifting guide mechanisms 50R and 50L near the vehicle entry side of the pallet of the lifting body, the shaking that occurs at the time of vehicle entry is effectively suppressed at the entrance side.

The operation of the lifting guide mechanism having the above-described structure will be described with reference to FIG. When the elevating body 6 having the pallet 22 is at the lowermost stage, the elevating body 6 is placed on the stopper 76. The guide body 53 also stops lowering on the base 77 separately from the elevating body 6. When raising the right pallet 22, the right side of the drive chain 49 is driven to run upward and the connecting pin 72 is engaged with the lifting section 68. Although the guide body 53 is going to rise, first, the engaging portion 74 of the guide body 53 is engaged with the hook 75 on the pallet 22 side.

The pallet load acts downward on the engaging portion 74 of the guide body 53 only after the engaging portion 74 and the hook 75 are engaged. At the same time, a pallet lifting force (= pallet load) acts on the lifting portion 68 of the guide body 53 as a reaction force of the pallet load. A lifting portion 68 on which a lifting force acts and an engaging portion 74 on which a pallet load acts.
Are shifted in the frontage direction, a moment acts on the guide body 53, and the guide body 53 tends to tilt clockwise.
Therefore, the upper guide roller 63 abuts on the guide surface 62, and the lower guide roller 64 abuts on the guide surface 61, and the space between the upper and lower guide rollers 63, 64 of the guide body 53 and the guide surfaces 61, 62 of the guide rail 5. There is no gap in. After this state, the guide body 53 and the elevating body 6 move up integrally.

[0039]

As described above, according to the first aspect of the present invention, a guide body is provided along a guide rail between a pallet and a drive chain, and a pair of upper and lower guides provided on the guide body is provided. Each roller is pressed against a pair of guide surfaces of the guide rail by the rotational moment generated by the load of the pallet and the lifting force of the drive chain, so that the gap between the guide rail and the guide roller is completely eliminated. Can be guided in the vertical direction. As a result, it is possible to suppress shaking when the pallet is raised and lowered. Further, since the guide member and the pallet are independent, the inclination of the guide member when receiving the rotational moment does not affect the posture of the pallet.

According to the second aspect of the present invention, by causing the guide rollers and the guide surface of the guide rail to approach each other, it is possible to prevent interference between the guide body and the guide rail when the guide body receives a rotational moment.

According to the third aspect of the present invention, since the lifting portion and the connecting pin are configured to be rotatable, the inclination of the guide body when the guide body receives the rotational moment can be tolerated, and the rotational torque can be applied to the drive chain. And the bending force does not act.

According to the fourth aspect of the present invention, since the concave engaging portion of the guide body and the hook provided on the pallet intersect and engage with each other, the position of the guide body and the pallet when the pallet is guided up and down is guided. No shift occurs.

According to the fifth aspect of the present invention, a guide body is provided between an endless drive chain and an elevating body which can be raised and lowered in the pit, and each of a pair of upper and lower guide rollers provided on the guide body is provided. Is pressed against each of the pair of guide surfaces of the guide roller by the rotating moment generated by the load of the lifting body and the lifting force of the drive chain, so that the lifting body is completely removed with no gap between the guide rail and the guide roller. It can guide you in the vertical direction. As a result, it is possible to suppress the swinging of the vehicle when the vehicle enters the pallet while the lifting body is lifted, and the swinging of the lifting body at the time of lifting.

According to the sixth aspect of the present invention, a pit-type parking system is provided in which a single lifting drive device capable of alternately lifting and lowering a pair of adjacent lifting members is disposed below a passage step between the pair of lifting members. In the apparatus, since the drive chain and the elevating guide mechanism of each elevating body can be provided in a column supporting the passage step and can be unitized, the space in the pit can be effectively used.

According to the invention according to claim 7, since the lifting drive device including the lifting guide mechanism is disposed on the column disposed near the vehicle entry side of the pallet, the pallet in a state where the lifting body is lifted up. The vehicle can be prevented from shaking when entering the vehicle, and the driver does not feel uneasy when entering the vehicle.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the structure and operation of a lifting guide mechanism according to the present invention.

FIG. 2 is a perspective view of a lifting guide mechanism of the present invention.

FIG. 3 is a front view of a pit type parking device to which the lifting guide mechanism according to the present invention is applied.

FIG. 4 is a side view of a pit type parking device to which the lifting guide mechanism according to the present invention is applied.

FIG. 5 is a drawing of a chain around the pit type parking device.

FIG. 6 is a detailed side view of a lifting drive device and a lifting guide mechanism in the pit type parking device.

FIG. 7 is a detailed sectional view of a lifting drive device and a lifting guide mechanism in the pit type parking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Ground surface 3 Pit 5 Passage step 6 Elevator 10 Elevation drive device 16 Support 17 Support 21 Upper pallet 22 Lower pallet 49 Drive chain 50 Elevation guide mechanism 50R Right elevation guide mechanism 50L Left elevation guide mechanism 50 Lifting pin 51 First Guide rail 52 Second guide rail 53 Guide body 61 Guide surface 62 Guide surface 63 Upper guide roller 64 Lower guide roller 68 First lifting unit 69 Second lifting unit 71 Arc surface 72 Connection pin 73 Connection pin 74 Engagement unit 75 Hook A Boarding side

Claims (7)

[Claims] 1. A lift guide mechanism for guiding a pallet on which a vehicle rides in a vertical direction, comprising: a guide rail having a pair of guide surfaces provided along the vertical direction of the pallet; and a pair of guide surfaces of the guide rail. A guide body having a pair of upper and lower guide rollers that rolls inside the guide body, the guide body having an engaging portion that engages with the pallet, and a lifting portion that connects a drive chain that raises and lowers the pallet. The engaging portion and the lifting portion of the guide body are pressed against each of the pair of upper and lower guide rollers against each of the pair of guide surfaces of the guide rail by the lifting force of the drive chain and the load of the pallet. A lifting / lowering guide mechanism for a parking device that has a positional relationship to generate a rotational moment. 2. The parking device according to claim 1, wherein the pair of upper and lower guide rollers are arranged at predetermined intervals at their axis so as to approach each of the pair of guide surfaces of the guide rail. Elevating guide mechanism. 3. The lift guide mechanism for a parking device according to claim 1, wherein the lifting portion of the guide body has a hook shape having an arcuate surface engageable with a connecting pin attached to the drive chain. 4. The parking according to claim 1, wherein the engaging portion of the guide body has a concave shape that opens upward, and the pallet is provided with a hook that can be engaged with the concave engaging portion so as to intersect with the concave engaging portion. Elevating guide mechanism for the device. 5. A passage step spanned in the depth direction of a pit dug from the ground, and a lifting / lowering body which is provided in the pit between the passage steps so as to be able to ascend and descend and is connected to a plurality of upper and lower pallets on which a vehicle rides. A balance chain for maintaining a predetermined posture during the elevating operation of the elevating body; and an elevating drive device including an endless drive chain installed on a support supporting the passage step and suspending one part of the elevating body. A pit type parking device comprising: a guide rail having a pair of guide surfaces formed along the column, and the lift drive device rolls in the pair of guide surfaces of the guide rail. A guide body having a pair of upper and lower guide rollers, wherein the guide body includes an engaging portion engageable with the elevating body, and a connecting pin attached to the drive chain. A lifting portion that can be engaged with the engaging portion and the lifting portion, and the lifting force of the drive chain and the load of the elevating body are used to couple each of the pair of upper and lower guide rollers to a pair of the guide rails. A pit-type parking device having a positional relationship of generating a rotational moment pressing each of the guide surfaces. 6. The drive chain, wherein the drive chain is endlessly wound in a support for supporting a passage step between adjacent lift bodies, and is located on both sides of the drive chain. A pair of elevating guide mechanisms for guiding the ascending and descending bodies of each of the elevating bodies, wherein a connecting pin attached to the endless drive chain is located on one of the two sides, and a set of the elevating guides is provided. The lifting mechanism of each guide body of the mechanism can be engaged alternately.
A pit-type parking device as described. 7. The pit-type parking device according to claim 5, wherein the lifting drive device including the lifting guide mechanism is disposed on the column installed near the vehicle entry side of the pallet.