A differentiated access device for a stereo garage

Abstract

The present invention relates to a differentiated storage and retrieval device for a stereo garage, comprising a trailer frame, on which at least one pair of running wheels is fixed; a traction mechanism, which is suitable for driving the trailer frame to move forward or backward along its length direction; a tire gripping mechanism, which is arranged on the inner or outer side of the trailer frame and is suitable for clamping and lifting the corresponding tire of the vehicle; a posture control mechanism, which is suitable for controlling the synchronous deflection of the trailer frame to make the length direction of the trailer frame parallel to the length direction of the vehicle; when the vehicle needs to be parked, the posture control mechanism adjusts the angle of the trailer frame to make the length direction of the trailer frame parallel to the length direction of the vehicle; the traction mechanism drives the trailer frame to move forward and places the trailer frame on both sides of the bottom of the vehicle, and the tire gripping mechanism moves to the side of the tire along the length direction of the trailer frame according to the wheelbase of the vehicle and then works to lift the vehicle; the traction mechanism drives the trailer frame to return to its position and corrects the angle of the trailer frame at the same time; the vehicle angle can be corrected while the vehicle is parked, thereby improving parking efficiency and saving time.

Description

Technical Field

[0001] The invention relates to a garage access device, in particular to a differentiated access device for a stereo garage. Background Art

[0002] With the continuous development of the automobile industry, it is becoming increasingly difficult to place vehicles in limited urban space. Stereoscopic parking garages are mechanical equipment used to access or store a large number of vehicles. Due to its unique characteristics of small average single-vehicle footprint, it is widely accepted by users.

[0003] The traditional parking method of a three-dimensional garage is to drive the vehicle into the lifting area or park the vehicle in the transfer area, and then use the vehicle pickup mechanism to drag the vehicle into the lifting area and finally store the vehicle.

[0004] However, during the parking process, you will face the following problems:

[0005] 1. Since the conventional vehicle pickup mechanism can move in a straight line or in a curve, when the vehicle is parked crookedly in the transfer area or the lifting area, the linear motion vehicle pickup mechanism cannot accurately locate the vehicle for pickup. The curved motion vehicle pickup mechanism must first accurately locate the vehicle before picking it up, which takes a long time to pick up the vehicle and is inefficient.

[0006] 2. Since the wheelbase of the vehicle will change, that is, the parking position of the vehicle parked in a transfer area of ​​a certain area will change, and the vehicle picking device will deviate from the safe position during the lifting and lowering process after the vehicle is picked up;

[0007] In summary, how to achieve differentiated parking and retrieval in the garage (i.e., correcting the deviation angles of vehicles with different wheelbases during the parking process, and simultaneously retrieval of multiple vehicles at different positions) and improve the parking and retrieval efficiency has become an urgent problem that our researchers need to solve. Summary of the invention

[0008] The technical problem to be solved by the present invention is: how to realize the simultaneous correction of the deviation angle of vehicles with different wheelbases during parking;

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] The present invention is a differentiated storage and retrieval device for a stereo garage, comprising at least one set of trailer frames, on which at least one pair of running wheels is fixed; a traction mechanism, which is suitable for driving the trailer frame to move forward or backward along its length direction; a tire gripping mechanism, which is arranged on the inner side or outer side of the trailer frame and is suitable for clamping and lifting the corresponding tire of the vehicle; a posture control mechanism, which is suitable for controlling the synchronous deflection of the trailer frame so that the length direction of the trailer frame is parallel to the length direction of the vehicle; when the vehicle is placed in a transfer area and needs to be parked, the posture control mechanism adjusts the angle of the trailer frame so that the length direction of the trailer frame is parallel to the length direction of the vehicle; the traction mechanism drives the trailer frame to move forward and places the trailer frame on both sides of the bottom of the vehicle, and the tire gripping mechanism moves to the side of the tire along the length direction of the trailer frame according to the wheelbase of the vehicle and then works to lift the vehicle; the traction mechanism drives the trailer frame to return to its position, places the vehicle in a parking space, and corrects the angle of the trailer frame at the same time. When the vehicle needs to be picked up, the traction mechanism drives the trailer frame to move forward or / and backward synchronously, and after the vehicle placed in the parking space is clamped and lifted by the tire gripping mechanism, the traction mechanism drives the vehicle to be placed in the transfer area;

[0011] In this scheme, the trailer frame is driven by the traction mechanism and moves forward or backward through the running wheels; the trailer frame moves forward or backward to pick up the vehicle, and moves backward or forward to store the vehicle; when the trailer frame moves to both sides of the bottom of the vehicle, the tire gripping mechanism works to lift the tires, thereby lifting the entire vehicle; when the vehicle is parked at an angle, before the trailer frame moves, the posture control mechanism adjusts the offset angle of the trailer frame to align it with the length direction of the vehicle, and then the trailer frame moves;

[0012] In addition, the device can be provided with multiple sets of traction mechanisms, trailer frames, and posture control mechanisms, so as to realize the storage and retrieval of multiple vehicles; when multiple vehicles stop in the transfer area, the device can drive the vehicles to move forward or backward after the angle is corrected and then store them in the corresponding parking spaces. The principle of the vehicle retrieval method is consistent with that of the vehicle storage method. Since the vehicles parked in the parking spaces are already in the state of angle correction, the posture control mechanism does not need to be used in the vehicle retrieval process;

[0013] This device can achieve 1. correcting the deviation angle of vehicles with different wheelbases during parking; 2. storing and accessing different vehicles at different positions at the same time; thus realizing the differentiated storage and access of vehicles by this device.

[0014] In order to illustrate the specific structure of the traction mechanism, the present invention adopts a traction mechanism including a first sliding mechanism and a second sliding mechanism arranged up and down; a partition is arranged between the first sliding mechanism and the second sliding mechanism, and a bottom plate is arranged at the bottom of the second sliding mechanism; the first sliding mechanism includes: a first rack, which is parallel to the length direction of the trailer frame and fixed to the bottom of the trailer frame; a first slide rail, which is parallel to the first rack and fixed to the upper end surface of the partition; a first slider, which is arranged at the bottom of the trailer frame and cooperates with the first slide rail; a first gear, which is arranged at the front side of the trailer frame and cooperates with the first rack to drive the trailer frame to move forward; the second sliding mechanism includes: a second rack, which is parallel to the length direction of the trailer frame and fixed to the lower end surface of the partition; a second slide rail, which is parallel to the second rack and fixed to the upper end surface of the bottom plate; a second slider, which is arranged at the bottom of the partition and cooperates with the second slide rail; a second gear, which is arranged at the rear side of the trailer frame and cooperates with the second rack to drive the trailer frame connected to the partition to move backward.

[0015] The first sliding mechanism and the second sliding machine structure are arranged up and down, the first sliding mechanism drives the trailer frame to move forward, and the second sliding machine structure drives the trailer frame to move backward, that is, the travel of the device is 3 times the length of the trailer frame;

[0016] The first sliding mechanism and the second sliding mechanism are both realized by gears and racks, and the slide block and the slide rail play a guiding and supporting role.

[0017] In order to illustrate the specific structure of the tire gripping mechanism, the tire gripping mechanism adopted by the present invention includes: two lifting rods, one end of which is hinged to the accommodating cavity on the inner side or the outer side of the trailer frame, and the other end is provided with a wheel; two first connecting rods, one end of which is hinged to the corresponding lifting rods; a second connecting rod, one end of which is hinged to the other end of the first connecting rod; a hydraulic cylinder, the piston rod of which is fixedly connected to the midpoint of the second connecting rod; when the piston rod of the hydraulic cylinder is extended, the first and second connecting rods move, driving the angle between the two lifting rods to decrease, placing the tire on the lifting rod, and lifting the vehicle;

[0018] The lifting rod is normally stored in the accommodating cavity. When work is required, the hydraulic cylinder drives the angle between the two lifting rods to decrease. Since the surface of the lifting rod is arc-shaped, it is tangent to the surface of the tire, so that the tire can be lifted;

[0019] In this solution, the wheels play the role of movement and support, and universal wheels are preferred.

[0020] When facing vehicles of different lengths, the positions of their tires will change. How to realize that the tire-grabbing mechanism can adapt to vehicles of different lengths? The present invention adopts a tire-grabbing mechanism placed in a receiving cavity on the inner side or outer side of the trailer frame; a third slide rail parallel to the length direction of the trailer frame is arranged in the receiving cavity; a third slider matched with the third slide rail is arranged on the tire-grabbing mechanism; a screw rod is rotatably arranged in the receiving cavity, and the screw rod passes through the third slider; when the screw rod rotates, the tire-grabbing mechanism moves in the receiving cavity along the direction of the third slide rail;

[0021] That is to say, the tire-grabbing mechanism realizes movement relative to the length direction of the trailer frame through the rotation of the screw rod, thereby moving the tire-grabbing mechanism to one side of the tire; the cooperation of the slider and the slide rail also plays a supporting and guiding role.

[0022] To illustrate the specific structure of the posture control mechanism, the posture control mechanism adopted by the present invention includes: a rod body, which is rotatably connected to the middle part of the trailer frame; a fourth rack, whose two ends are respectively hinged to the ends of the trailer frame; a fourth gear; which is meshed with the fourth rack; when the fourth gear rotates, the fourth rack performs translational motion, driving the trailer frame to rotate around the rod body;

[0023] Since the trailer frames can only move along their length direction, when the trailer frame rotates, the trailer frame can also rotate synchronously;

[0024] The rod body is hinged to the trailer frame, so the trailer frame can rotate around the rod body. The fourth gear, as a power source, meshes with the fourth rack, driving the fourth rack to move perpendicular to the length direction of the trailer frame. When the fourth rack is working, the angle between the fourth rack and the trailer frame bracket is not a right angle. At this time, the trailer frame rotates around the rod body so that it is parallel to the length direction of the vehicle.

[0025] Beneficial effects of the present invention: The present invention is a differentiated storage and retrieval device for a three-dimensional car park, which realizes the forward and backward movement of the trailer frame through a traction mechanism, thereby realizing the storage and retrieval of the vehicle, and realizes the lifting of the vehicle through a tire gripping device, and realizes the correction of the offset angle when the vehicle is put into the garage through a posture control mechanism; in addition, the present device can realize the storage and retrieval of multiple different vehicles at different positions at the same time, saving the time for storing and retrieval of vehicles and improving the efficiency of storing and retrieval of vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 is a front view of the present invention;

[0028] Figure 2 is a top view of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the traction mechanism of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the tire gripping mechanism of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the posture control mechanism of the present invention;

[0032] In the figure: 200-trailer frame, 201-traveling wheel, 202-traction mechanism, 203-tire gripping mechanism, 204-posture control mechanism, 205-first sliding mechanism, 206-second sliding mechanism, 207-partition, 208-bottom plate, 209-first rack, 210-first slide rail, 211-first slider, 212-first gear, 213-second rack, 214-second slide rail, 215-second slider, 216-second gear, 217-lifting rod, 218-wheel, 219-first connecting rod, 220-second connecting rod, 221-hydraulic cylinder, 222-screw rod, 223-rod body, 224-fourth rack, 225-fourth gear, 226-fifth rack, 227-motor, 228-flipping member. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] like Figure 1 , Figure 2 As shown, the present invention is a differentiated storage and retrieval device for a stereo garage, comprising at least one set of trailer frames 200, on which at least one pair of running wheels 201 is fixed; a traction mechanism 202, which is suitable for driving the trailer frame 200 to move forward or backward along its length direction; a tire gripping mechanism 203, which is arranged on the inner side or outer side of the trailer frame 200 and is suitable for clamping and lifting the corresponding tire of the vehicle; a posture control mechanism 204, which is suitable for controlling the synchronous deflection of the trailer frame 200, so that the length direction of the trailer frame 200 is parallel to the length direction of the vehicle; when the vehicle needs to be parked, the posture control mechanism 204 adjusts the angle of the trailer frame 200, so that the length direction of the trailer frame 200 is parallel to the length direction of the vehicle; the traction mechanism 202 drives the trailer frame 200 to move forward, and places the trailer frame 200 on both sides of the bottom of the vehicle, and the tire gripping mechanism 203 moves to the side of the tire along the length direction of the trailer frame 200 according to the wheelbase of the vehicle, and then works to lift the vehicle; the vehicle is placed in a parking space, and the angle of the trailer frame 200 is corrected at the same time. When a vehicle needs to be picked up, the traction mechanism 202 drives the trailer frame 100 to move forward or / and backward synchronously. After the vehicle placed on the parking space is clamped and lifted by the tire gripping mechanism 203, the traction mechanism 203 drives the vehicle to be placed in the transfer area.

[0035] In this scheme, when the vehicle is parked at an angle, before the trailer frame moves, the posture control mechanism adjusts the offset angle of the trailer frame to align it with the length direction of the vehicle, and then the trailer frame moves; the trailer frame is driven by the traction mechanism and the running wheels realize forward or backward movement of the trailer frame; the trailer frame moves forward or backward to pick up the vehicle, and moves backward or forward to store the vehicle; when the trailer frame moves to both sides of the bottom of the vehicle, the tire gripping mechanism works to lift the tires, thereby lifting the entire vehicle;

[0036] In addition, the device can be provided with multiple sets of traction mechanisms, trailer frames, and posture control mechanisms, so as to realize the storage and retrieval of multiple vehicles in different directions; when multiple vehicles stop in the transfer area, the device can drive the vehicles to move forward or backward after angle correction and store the corresponding vehicles in the corresponding parking spaces. The principle of the vehicle retrieval method is consistent with that of the vehicle storage method. Since the vehicles parked in the parking spaces are already in an angle correction state, the posture control mechanism does not need to be used in the vehicle retrieval process;

[0037] This device achieves 1. The deviation angle of vehicles with different wheelbases can be corrected simultaneously during the parking process; 2. When at least one group of this device is used, forward or backward parking and retrieval operations can be realized simultaneously; 3. When more than two groups of this device are used, multiple vehicles can be stored and retrieved simultaneously, thereby realizing the differentiated parking and retrieval of vehicles by this device.

[0038] like Figure 4 As shown, in order to illustrate the specific structure of the traction mechanism, the traction mechanism 202 of the present invention includes a first sliding mechanism 205 and a second sliding mechanism 206 arranged up and down; a partition 207 is arranged between the first sliding mechanism 205 and the second sliding mechanism 206, and a bottom plate 208 is arranged at the bottom of the second sliding mechanism 206; the first sliding mechanism 205 includes: a first rack 209, which is parallel to the length direction of the trailer frame 200 and fixed to the bottom of the trailer frame 200; a first slide rail 210, which is parallel to the first rack 209 and fixed to the upper end surface of the partition 207; a first slider 211, which is arranged at the bottom of the trailer frame 200 and is connected to the first slide rail 210. 0; a first gear 212, which is arranged on the front side of the trailer frame 200 and cooperates with the first rack 209 to drive the trailer frame 200 to move forward; the second sliding mechanism 206 includes: a second rack 213, which is parallel to the length direction of the trailer frame 200 and fixed to the lower end surface of the partition 207; a second slide rail 214, which is parallel to the second rack 213 and fixed to the upper end surface of the bottom plate 208; a second slider 215, which is arranged at the bottom of the partition 207 and cooperates with the second slide rail 214; a second gear 216, which is arranged on the rear side of the trailer frame 200 and cooperates with the second rack 213 to drive the trailer frame 200 and the partition 207 to move backward.

[0039] In addition, in the traction mechanism, the first slider, the slide rail, the second slider, and the slide rail can be replaced in upper and lower positions.

[0040] The first sliding mechanism and the second sliding machine structure are arranged up and down, the first sliding mechanism drives the trailer frame to move forward, and the second sliding machine structure drives the trailer frame to move backward, that is, the travel of the device is 3 times the length of the trailer frame;

[0041] The first sliding mechanism and the second sliding mechanism are both realized by gears and racks, and the slide block and the slide rail play a guiding and supporting role.

[0042] like Figure 3 As shown, in order to illustrate the specific structure of the tire grabbing mechanism 203, the tire grabbing mechanism 203 adopted by the present invention includes: two lifting rods 217, one end of which is hinged to the accommodating cavity on the inner side or the outer side of the trailer frame 200, and the other end is provided with a wheel 218; two first connecting rods 219, one end of which is hinged to the corresponding lifting rod 217; a second connecting rod 220, one end of which is hinged to the other end of the first connecting rod 219; a hydraulic cylinder 221, the piston rod of which is fixedly connected to the midpoint of the second connecting rod 220; when the piston rod of the hydraulic cylinder 221 is extended, it is driven by the first and second connecting rods 220 and 219 to reduce the angle between the two lifting rods 217, so that the tire is placed on the lifting rod 217 and the vehicle is lifted;

[0043] The lifting rod is normally stored in the accommodating cavity. When work is required, the hydraulic cylinder drives the angle between the two lifting rods to decrease. Since the surface of the lifting rod is arc-shaped, it is tangent to the surface of the tire, so that the tire can be lifted;

[0044] In this solution, the wheels play the role of movement and support, and universal wheels are preferred.

[0045] like Figure 1 As shown, facing vehicles of different lengths, the position of the tires will change. How to realize that the tire-grabbing mechanism 203 can adapt to vehicles of different lengths? The present invention adopts a tire-grabbing mechanism 203 placed in a receiving cavity on the inner side or outer side of the trailer frame 200; a third slide rail parallel to the length direction of the trailer frame 200 is arranged in the receiving cavity; a third slider matched with the third slide rail is arranged on the tire-grabbing mechanism; a screw rod 222 is rotatably arranged in the receiving cavity, and the screw rod 222 passes through the third slider; when the screw rod 222 rotates, the tire-grabbing mechanism 203 moves in the receiving cavity along the direction of the third slide rail;

[0046] That is to say, the tire-grabbing mechanism realizes movement relative to the length direction of the trailer frame through the rotation of the screw rod, thereby moving the tire-grabbing mechanism to one side of the tire; the cooperation of the slider and the slide rail also plays a supporting and guiding role.

[0047] like Figure 1As shown, in order to illustrate the specific structure of the posture control mechanism, the posture control mechanism 204 adopted in the present invention includes: a rod body 223, which is rotatably connected to the middle part of the trailer frame 200; a fourth rack 224, both ends of which are respectively hinged to the ends of the trailer frame 200; a fourth gear 225; which is meshed with the fourth rack 224; when the fourth gear 225 rotates, the fourth rack 224 performs translational motion, driving the trailer frame 200 to rotate around the rod body 223;

[0048] Since the trailer frames can only move along their length direction, when the trailer frame rotates, the trailer frame can also rotate synchronously;

[0049] The rod body is hinged to the trailer frame, so the trailer frame can rotate around the rod body. The fourth gear, as a power source, meshes with the fourth rack, driving the fourth rack to move perpendicular to the length direction of the trailer frame. When the fourth rack is working, the angle between the fourth rack and the trailer frame bracket is not a right angle. At this time, the trailer frame rotates around the rod body so that it is parallel to the length direction of the vehicle.

[0050] like Figure 5 As shown, in order to specifically illustrate how the fourth gear rotates, the present invention adopts a fourth gear 225 that is also meshed with a fifth rack 226. The fifth rack 226 is parallel to the fourth rack 224. A motor 227 is provided on one side of the fifth rack 226. The motor 227 drives the fifth rack 226 to perform translational motion, wherein the movement directions of the fourth and fifth racks 224 and 226 are opposite.

[0051] like Figure 1 As shown, the front and rear ends of the trailer frame 200 are hinged with a flip piece 228; when the vehicle needs to be stored or retrieved, the flip piece 228 is in a vertical state; when the vehicle stops on the trailer frame 200, the flip piece 228 is in a horizontal state, and the two ends of the flip piece at the front or rear end are interlocked to form a stable frame structure with the trailer frame 200.

[0052] The present invention relates to a differentiated storage and retrieval device for a stereoscopic car park. The forward and backward movement of a trailer frame is achieved through a traction mechanism, thereby achieving storage and retrieval of vehicles. The vehicle is lifted through a tire gripping device. The offset angle of the vehicle is corrected when entering the garage through a posture control mechanism. In addition, the device can achieve storage and retrieval of multiple different vehicles at different positions at the same time, saving storage and retrieval time and improving storage and retrieval efficiency.

[0053] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A differentiated access device for a stereo garage, characterized by: Include at least one group A trailer frame, on which at least one pair of running wheels is fixed; A traction mechanism, which is suitable for driving the trailer frame to move forward or backward along its length direction; A tire gripping mechanism, which is disposed on the inner side or the outer side of the trailer frame and is suitable for gripping and lifting the corresponding tire of the vehicle; A posture control mechanism, which is suitable for controlling the synchronous deflection of the trailer frame so that the length direction of the trailer frame is parallel to the length direction of the vehicle; When the vehicle is placed in the transfer area and needs to be parked, the posture control mechanism adjusts the angle of the trailer frame so that the length direction of the trailer frame is parallel to the length direction of the vehicle; the traction mechanism drives the trailer frame to move forward and places the trailer frame on both sides of the bottom of the vehicle, and the tire gripping mechanism moves along the length direction of the trailer frame to the side of the tire according to the wheelbase of the vehicle and then works to lift the vehicle; the traction mechanism drives the trailer frame back to its position, places the vehicle in a parking space, and corrects the angle of the trailer frame at the same time; When a vehicle needs to be picked up, the traction mechanism drives the trailer frame to move forward or / and backward synchronously, and after the vehicle placed in the berth area is clamped and lifted by the tire gripping mechanism, the traction mechanism drives the vehicle to be placed in the transfer area; The traction mechanism includes a first sliding mechanism and a second sliding mechanism arranged up and down; A partition is provided between the first sliding mechanism and the second sliding mechanism, and a bottom plate is provided at the bottom of the second sliding mechanism; The first sliding mechanism comprises: A first rack, which is parallel to the length direction of the trailer frame and fixed to the bottom of the trailer frame; A first slide rail, which is parallel to the first rack and fixed to the end surface of the partition; A first sliding block, which is arranged at the bottom of the trailer frame and cooperates with the first sliding rail; A first gear, which is arranged at the front side of the trailer frame and cooperates with the first rack to drive the trailer frame to move forward; The second sliding mechanism comprises: A second rack, which is parallel to the length direction of the trailer frame and fixed to the lower end surface of the partition; A second slide rail, which is parallel to the second rack and fixed to the upper surface of the bottom plate; A second sliding block, which is arranged at the bottom of the partition and cooperates with the second sliding rail; A second gear, which is arranged at the rear side of the trailer frame and cooperates with the second rack to drive the trailer frame and the partition to move backward; The posture control mechanism comprises: A rod body, which is rotatably connected to the middle part of the trailer frame; a fourth rack, both ends of which are hinged to the ends of the bottom plate respectively; a fourth gear meshing with the fourth rack; When the fourth gear rotates, the fourth rack performs translational motion, driving the trailer frame to rotate around the rod body; The front and rear ends of the trailer frame are both hinged with flipping parts; When the vehicle needs to be parked or retrieved, the flip member is in a vertical state; When the vehicle stops on the trailer frame, the flip member is in a horizontal state, and the ends of the two flip members at the front or rear end are buckled with each other to form a stable frame structure with the trailer frame.

2. The differentiated access device for a stereo garage according to claim 1, characterized in that: The tire gripping mechanism comprises: Two lifting rods, one end of which is hinged to the accommodating cavity on the inner side or the outer side of the trailer frame, and the other end is provided with a wheel; Two first connecting rods, one end of which is hinged to the corresponding vehicle lifting rod; a second connecting rod, one end of which is hinged to the other end of the first connecting rod; a hydraulic cylinder, the piston rod of which is fixedly connected to the midpoint of the second connecting rod; When the piston rod of the hydraulic cylinder extends, the first and second connecting rods are used for transmission, thereby reducing the angle between the two vehicle lifting rods, placing the vehicle on the vehicle lifting rods, and lifting the vehicle.

3. The differentiated access device for a stereo garage according to claim 1 is characterized in that: The tire gripping mechanism is placed in a receiving cavity on the inner side or outer side of the trailer frame; A third slide rail parallel to the length direction of the trailer frame is arranged in the accommodating cavity; The tire gripping mechanism is provided with a third sliding block matched with the third sliding rail; A screw rod is rotatably arranged in the accommodating cavity, and the screw rod passes through the third sliding block; When the screw rod rotates, the tire grabbing mechanism moves in the accommodating cavity along the direction of the third slide rail.

4. The differentiated access device for a stereo garage according to claim 1, characterized in that: The fourth gear is also meshed with a fifth rack, the fifth rack is parallel to the fourth rack, a motor is provided on one side of the fifth rack, and the motor drives the fifth rack to perform translational motion; Wherein, the translation directions of the fourth and fifth racks are opposite.

Images