Fence door for pit type negative-positive-one parking equipment

Abstract

The utility model discloses a fence door for pit type negative-positive-one parking equipment, which comprises a left stand column, a right stand column, a fence door plate and a driving device, the left stand column and the right stand column are fixed on the ground and are oppositely arranged left and right, the driving device is used for driving the fence door plate to lift, and lifting guide devices are arranged between the left side frame and the right side frame of the fence door plate and the corresponding stand columns respectively. The driving device drives the fence door plate to descend to limit vehicles from entering and exiting the garage; the driving device drives the door plate to rise, and vehicles can pass through the lower portion of the door plate to enter and exit the garage. The fence door plate comprises a first door plate and a second door plate and is divided into two sections which can be overlapped and separated, when the fence door is lifted in place, the first door plate and the second door plate are overlapped together, the height of the first door plate is only equal to that of the first door plate, and the occupied height space is reduced. When descending in place, the first door plate and the second door plate are vertically distributed, the upper portion of the first door plate is flush with the lower portion of the second door plate, and the height sum of the first door plate and the second door plate can meet the height requirement of the national standard for the fence door.

Description

Technical Field

[0001] The utility model relates to a safety door of a three-dimensional parking device, in particular to a fence door of a pit-type parking device with one underground layer and one above ground layer, belonging to the technical field of mechanical three-dimensional parking devices. Background Art

[0002] With the increase in the number of cars, the problem of parking difficulties has become increasingly prominent. For this reason, large supermarkets, residential buildings, office buildings, etc. generally have at least one underground garage to solve the problem of parking difficulties. Due to the limited space in the basement, the garages built mostly use two-story lifting and lateral movement mechanical parking equipment on the ground or two-story simple lifting and lateral movement mechanical parking equipment, with two upper and lower parking spaces; when the net height of the underground parking garage is less than 3.5 meters, only one-story parking equipment can be used. In order to make full use of the underground space and increase the number of parking spaces, some people have thought of digging a pit under the parking position to park an extra layer of cars (of course, the underground garage at the bottom of the building), which becomes a negative one positive two, that is, one underground and one above ground (the concept of above ground and underground refers to the ground of the underground garage on this floor, not the ground outside the building) two-story lifting and lateral movement mechanical garage, such as a negative one positive two lifting and lateral movement parking mechanism disclosed in 202122643267.0, or a negative one positive one, that is, one underground and one above ground lifting and lateral movement mechanical garage, such as a negative one positive one mechanical parking equipment with a pit disclosed in 201621034213.7.

[0003] According to the provisions of GB / T39980 "Design Specifications for Mechanical Parking Equipment" in Section 9.3.2.2 on fence gates: When there is a pit at the entrance or exit or transition area and the height difference exceeds 0.5m, and there is a possibility of people falling, a fence gate should be installed. According to the requirements of the diagram of this regulation, when the fence gate is lowered into place, the lower end of the fence gate is ≤200mm from the ground, and the upper end of the fence gate is ≥1400mm from the ground. When the fence gate is raised into place, the lower end of the fence gate is ≥1800mm from the ground.

[0004] If the fence gate is set outside the pit, the minimum size of the fence gate = 1400-200 = 1200mm. After the fence gate rises to its position, the bottom of the fence gate is 1800mm from the road surface, 1200+1800=3000mm. In other words, under normal circumstances, when the fence gate is set outside the pit, the minimum requirement for the space height above the ground of the fence gate entrance and exit is 3000mm.

[0005] However, the space in the underground parking lot is often affected and restricted by fire pipes and cable trays. Generally, for the equipment on the first basement floor and the first ground floor, the net height of the space above the ground at the entrance of the fence gate cannot meet the height requirements for setting the fence gate outside the pit. Therefore, generally, the fence gate can only be set inside the pit, between the front edge of the pit and the steel structure frame. For example, a ground-hidden fence machine for a garage disclosed in 201720401637.0 includes a fence gate and a motor that lifts and lowers the fence gate through a sling. There is a pit for accommodating the fence gate below the ground. There are two oppositely arranged columns in the pit. The two side edges of the fence gate are slidably installed on the corresponding columns. The fence gate has a hidden state of sinking into the pit and a working state of protruding above the ground; there are supporting wheels at both ends of the bottom of the fence gate. The motor is installed on one of the columns. One end of the sling is connected to the motor, and the other end is wound around each supporting wheel and then connected to the other column. For this kind of ground-hidden fence machine, during the process of vehicles entering and leaving the garage, the fence gate is sunk into the pit, that is, in the hidden state; when it is necessary to prevent external personnel from entering, the fence gate is lifted to the working state of protruding above the ground.

[0006] However, setting the fence gate in the pit will occupy the installation space of the parking equipment and cause the reduction of the vehicle accommodation length. When the security gate descends into the pit during vehicle entry and exit, the vehicle passes above the security gate. When storing and retrieving vehicles, the wheels passing over the security gate will exert an external force on the security gate and the driving device, affecting the stability and service life of the security gate. Summary of the Invention

[0007] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a fence gate for a pit-type basement-first and ground-floor-first parking equipment to solve the related problems raised in the above background technology.

[0008] The technical solution adopted by the present utility model to achieve the above purpose is as follows:

[0009] A fence gate for a pit-type basement-first and ground-floor-first parking equipment includes two left and right oppositely arranged left columns, right columns, a fence door panel, and a driving device for driving the fence door panel to lift and lower. There is a lifting guiding device between the left and right side frames of the fence door panel and their corresponding columns. The driving device drives the fence door panel to descend, which can restrict vehicles from entering and leaving the garage; the driving device drives the door panel to rise, and the vehicle can pass through the lower part of the door panel to enter and leave the garage; its characteristics are: the fence door panel includes a first door panel and a second door panel. When the first door panel and the second door panel rise to the upper end, the first door panel and the second door panel overlap front and back, and the overall height of the fence door panel is less than the sum of the heights of the first door panel and the second door panel; when the first door panel and the second door panel descend to the lower end, the first door panel and the second door panel are distributed vertically, and the overall height of the fence door panel is the sum of the heights of the first door panel and the second door panel.

[0010] By adopting the above technical solution, the conventional integral fence gate is divided into two split fence gates that can overlap and separate. When it rises to the in-place position, the first door panel and the second door panel overlap together, and the height is only the height of the first door panel, reducing the occupation of the height space. When it descends to the in-place position, the first door panel and the second door panel are distributed vertically. The upper part of the first door panel is flush with the lower part of the second door panel, and the sum of the heights of the first door panel and the second door panel can meet the height requirements of the national standard for the fence gate.

[0011] In the above-mentioned fence gate for the pit-type negative-one positive-one parking equipment, both the first door panel and the second door panel include a rectangular frame composed of four side frames on the top, bottom, left, and right and a fence gate core; the lifting and guiding device includes guide shoes arranged on the left column and the right column and guiding plates arranged on the rear sides of the left column and the right column. The left side frame or the right side frame of the first door panel can slide in the chute of the guide shoe, and the left side frame or the right side frame of the second door panel can slide along the guiding plate.

[0012] Furthermore, the left column and the right column are H-shaped steel. The two flange plates of the H-shaped steel serve as the front side and the rear side of the left column and the right column respectively; the guide shoes are arranged on the mutually facing sides of the webs of the left column and the right column; the horizontal cross-section of the guiding plate is C-shaped, and the C-shaped openings of the guiding plates on the left column and the right column face each other. Nylon wear-resistant blocks are provided on the front and rear sides of the left side frame / right side frame of the second door panel.

[0013] By adopting the above technical solution, guide shoes are arranged on the webs of the left column and the right column to limit the first door panel to only slide in the chute of the guide shoe; guiding plates are arranged on the rear sides of the left column and the right column to limit the second door panel to only slide along the guiding plate, enabling the first door panel and the second door panel to stably move up and down in the vertical direction without jamming. Such a structure can better maintain the stability of the door panel.

[0014] In the above-mentioned fence gate for the pit-type negative-one positive-one parking equipment, the driving device is arranged on the upper parts of the left column and the right column, and includes a motor, a drum, a drum steel wire rope, a left reversing wheel, a right reversing wheel, a first pulley, a second pulley, and a third pulley; left and right hanging point seats are arranged on the first door panel;

[0015] The motor is arranged on the front side of the right column, the drum is connected to the output shaft of the motor, and the motor drives the drum to rotate; the left reversing wheel is arranged on the top of the left column, and the right reversing wheel is arranged on the top of the right column; the first pulley and the second pulley are arranged on the front side of the left column, and the third pulley is arranged on the front side of the right column; the rotation axes of the left reversing wheel and the right reversing wheel are perpendicular to the direction of vehicle entry and exit, and the rotation axes of the motor, the drum, the first pulley, the second pulley, and the third pulley are parallel to the direction of vehicle entry and exit;

[0016] One end of the drum wire rope is connected to the drum, and the other end is provided with a joint. The drum wire rope starts from the drum, bypasses the drum and then is connected to the right lifting wire rope. The right lifting wire rope successively bypasses the first pulley, the third pulley, and the right reversing pulley and then is connected to the right hanging point seat; one end of the left lifting wire rope is connected to the joint, and the other end successively bypasses the second pulley and the left reversing pulley and then the other end is connected to the left hanging point seat; the distance between the joint and the drum is greater than the stroke of the first door panel.

[0017] By adopting the above technical solution, the motor is arranged on the front side of the right column, without occupying the height space, and further reduces the overall height of the fence door device. The drum is arranged on the output shaft of the motor, and the motor drives the drum to rotate. The drum is provided with a rope groove, which can make the wire rope arranged in an orderly manner.

[0018] Furthermore, a lifting plate is provided at the bottom of the lower border of the first door panel. When the first door panel rises, the lifting plate lifts the second door panel to rise; limiting plates are arranged at the rear sides of the left column and the right column and at the lower part of the guide plate. When the first door panel descends, the second door panel descends by its own weight, and its lower end finally rests on the limiting plate.

[0019] By adopting the above technical solution, the second door panel does not need to provide an additional power source, and only by the lifting of the first door panel, the rising action of the second door panel can be realized.

[0020] Even further, a rubber buffer pad is provided on the limiting plate.

[0021] By adopting the above technical solution, a rubber buffer pad is provided on the limiting plate. The second door panel descends by its own weight, and its lower end finally rests on the limiting plate. The rubber pad can buffer the second door panel and reduce noise, improving the stability and service life of the fence door. Beneficial effects

[0022] Compared with the prior art, a fence door for a pit-type negative-one positive-one parking equipment provided by the present utility model divides the conventional integral fence door into two split fence doors that can overlap and separate. When rising to the in-place position, the first door panel and the second door panel overlap together, and the height is only the height of the first door panel, reducing the occupation of the height space. When descending to the in-place position, the first door panel and the second door panel are distributed vertically, the upper part of the first door panel is flush with the lower part of the second door panel, and the sum of the heights of the first door panel and the second door panel can meet the height requirements of the national standard for the fence door. Brief description of the drawings

[0023] Figure 1 It is the overall schematic diagram when the fence door of the present utility model descends to the in-place position.

[0024] Figure 2 It is the overall schematic diagram when the fence door of the present utility model rises to the in-place position.

[0025] Figure 3 This is a schematic view of the upper part of the left column in the present utility model.

[0026] Figure 4 This is a schematic view of the upper part of the right column in the present utility model.

[0027] Figure 5 This is a sectional schematic view of the left reversing wheel in the present utility model.

[0028] Figure 6 This is a sectional schematic view of the first pulley in the present utility model.

[0029] Figure 7 This is a sectional schematic view when the fence door of the present utility model rises to the in-place position.

[0030] Figure 8 This is a transmission schematic view of the driving device in the present utility model.

[0031] In the figure: 1 First door panel, 1-1 Auxiliary frame, 1-2 Left hanging point seat, 1-3 Right hanging point seat, 1-4 Lifting plate,

[0032] 2 Second door panel, 2-1 Nylon wear-resistant block,

[0033] 3 Left column, 3-1 Guide shoe,

[0034] 4 Guide plate, 5 Right column, 6 Guide plate,

[0035] 7 Left reversing wheel, 71 Reversing wheel frame, 73 Reversing wheel, 72 Wheel shaft, 74 Bearing,

[0036] 8 First pulley, 81 Pulley frame, 83 Pulley, 82 Pulley shaft, 84 Bearing,

[0037] 9 Second pulley, 10 Right reversing wheel, 11 Third pulley, 12 Drum, 13 Motor, 14 Motor seat, 15 Limit plate, 16 Rubber buffer pad, 17 Drum steel wire rope, 18 Joint, 19 Left lifting steel wire rope, 20 Right lifting steel wire rope. Specific embodiments

[0038] To clearly illustrate the technical features of the present utility model, the following non-limiting embodiments are combined with the drawings to further describe the present utility model.

[0039] The front, rear, left, and right directions described in the present utility model are based on the front, rear, left, and right directions shown in the drawings. For the convenience of description, only parts related to the embodiments of the present utility model are shown.

[0040] Please see Figure 1 Until Figure 8, A fence door for a pit - type negative - one - positive - one parking equipment, comprising two left and right oppositely arranged left columns 3 and right columns 5 fixed on the ground outside the pit, a fence door panel, and a driving device for driving the lifting of the fence door panel. There is a lifting guiding device between the left and right side frames of the fence door panel and their corresponding columns. When the driving device drives the fence door panel to descend, it can restrict vehicles from entering and leaving the garage; when the driving device drives the door panel to rise, vehicles can pass through the lower part of the door panel to enter and leave the garage. The above - mentioned fence door panel includes a first door panel 1 and a second door panel 2. When the first door panel 1 and the second door panel 2 rise to the upper end, the first door panel 1 and the second door panel 2 overlap front - to - back, and the overall height of the fence door panel is less than the sum of the heights of the first door panel 1 and the second door panel 2; when the first door panel 1 and the second door panel 2 descend to the lower end, the first door panel 1 and the second door panel 2 are arranged one above the other, and the overall height of the fence door panel is the sum of the heights of the first door panel 1 and the second door panel 2. The specific structure is as follows:

[0041] Both the first door panel 1 and the second door panel 2 include a rectangular frame composed of four side frames, namely, upper, lower, left, and right side frames, and a fence door core; in this embodiment, the side frames are made of square tubes, and the square tubes of the four upper, lower, left, and right side frames are welded into a rectangular frame. On the first door panel 1, there are a left hanging point seat 1 - 2 and a right hanging point seat 1 - 3; in order to minimize the height of the entire fence door as much as possible, in this embodiment, auxiliary side frames 1 - 1 are fixedly connected to the outer sides of the left and right side frames of the first door panel 1. The upper end of the auxiliary side frame 1 - 1 is lower than the upper side frame, and the lower end extends downward and protrudes beyond the lower side frame. The left hanging point seat 1 - 2 / right hanging point seat 1 - 3 is connected to the upper end of the auxiliary side frame 1 - 1.

[0042] The left column 3 and the right column 5 are made of H - shaped steel, and the lower ends are fixed on the ground outside the pit. The two flange plates of the H - shaped steel serve as the front side and the rear side of the left column 3 and the right column 5 respectively; the lifting guiding device includes guide shoes 3 - 1 arranged on the left column 3 and the right column 5, and guide plates 4 arranged on the left column 3 and guide plate 6 on the rear side of the right column 5. In this embodiment, the guide shoes 3 - 1 are arranged on the mutually facing sides of the webs of the left column 3 and the right column 5; the horizontal cross - section of the guide plates 4 and 6 is C - shaped, and the C - shaped openings of the guide plates 4 and 6 on the left column 3 and the right column 5 face each other. Nylon wear - resistant blocks 2 - 1 are provided on the front and rear sides of the left or right side frame of the second door panel 2. The auxiliary side frame 1 - 1 of the left or right side frame of the first door panel 1 can slide in the chute of the guide shoe 3 - 1, and the left or right side frame of the second door panel 2 can slide along the guide plate.

[0043] The driving device is arranged at the upper part of the left column 3 and the right column 5, and includes a motor 13, a drum 12, a drum steel wire rope 17, a left reversing wheel 7, a right reversing wheel 10, a first pulley 8, a second pulley 9, and a third pulley 11;

[0044] In this embodiment, the motor 13 is disposed on the motor base 14, and the motor base 14 is fixed to the front side of the upper part of the right column 5. The winding drum 12 is connected to the output shaft of the motor 13, and the motor 13 drives the winding drum 12 to rotate. The left reversing wheel 7 is disposed at the top of the left column 3, and the right reversing wheel 10 is disposed at the top of the right column 5. The left reversing wheel 7 and the right reversing wheel 10 have the same structure, and both include a reversing wheel frame 71 and a reversing wheel 73. The reversing wheel 73 is rotatably connected to the reversing wheel frame 71 through a wheel shaft 72 and a bearing 74, which is a well-known structure. The reversing wheel frame 71 of the left reversing wheel 7 is bolted to the top end of the left column 3, and the reversing wheel frame 71 of the right reversing wheel 10 is bolted to the top end of the right column 5. The first pulley 8 and the second pulley 9 are disposed on the front side of the left column 3, and the third pulley 11 is disposed on the front side of the right column 5. The first pulley 8, the second pulley 9, and the third pulley 11 have the same structure, and all include a pulley frame 81 and a pulley 83. The pulley 83 is rotatably connected to the pulley frame 81 through a pulley shaft 82 and a bearing 84, which is a well-known structure. The pulley frames 81 of the first pulley 8 and the second pulley 9 are bolted to the front side of the left column 3, and the pulley frame 81 of the third pulley 11 is bolted to the front side of the right column 5. The rotation axes of the left reversing wheel 7 and the right reversing wheel 10 are perpendicular to the direction of vehicle entry and exit, and the rotation axes of the motor 13, the winding drum 12, the first pulley 8, the second pulley 9, and the third pulley 11 are parallel to the direction of vehicle entry and exit.

[0045] One end of the winding drum steel wire rope 17 is connected to the winding drum 12, and the other end is provided with a joint 18. The winding drum steel wire rope 17 starts from the winding drum 12, bypasses the winding drum 12, and is then connected to the right lifting steel wire rope 20. The right lifting steel wire rope 20 sequentially bypasses the first pulley 8, the third pulley 11, and the right reversing wheel 10 and is then connected to the right lifting point seat 1-3. One end of the left lifting steel wire rope 19 is connected to the joint 18, and the other end sequentially bypasses the second pulley 9 and the left reversing wheel 7 and is then connected to the left lifting point seat 1-2. The distance between the joint 18 and the winding drum 12 is greater than the stroke of the first door panel 1.

[0046] A lifting plate 1-4 is provided at the bottom of the lower border of the first door panel 1, and the lifting plate 1-4 extends towards the second door panel 2. When the first door panel 1 rises, the lifting plate 1-4 lifts the second door panel 2 to rise. Limiting plates 15 are provided at the rear sides of the left column 3 and the right column 5 and at the lower part of the guide plate. When the first door panel 1 descends, the second door panel 2 descends by its own weight, and its lower end finally rests on the limiting plates 15. Rubber buffer pads 16 are provided on the limiting plates 15.

[0047] In this embodiment, the heights of both the first door panel 1 and the second door panel 2 are 600 mm, and the height of the upper end surface of the rubber buffer pad 16 from the ground is 800 mm.

[0048] The working process of this embodiment:

[0049] Initial state: The lifting drive device drives the first door panel 1 and the second door panel 2 to fall, and the fence door is in the closed state;

[0050] When storing or retrieving a vehicle: The control system controls the motor 13 to rotate. The motor 13 drives the reel 12 to rotate. The reel wire rope 17 pulls the left lifting wire rope 19 and the right lifting wire rope 20 to move, gradually lifting the first door panel 1. When the lifting plate 1-4 at the bottom of the first door panel 1 touches the first door panel 1, the first door panel 1 will continue to lift and lift the second door panel 2 together. When it reaches the proper position, the first door panel 1 and the second door panel 2 overlap. At this time, the vehicle can enter and exit the garage through the fence door.

[0051] After storing or retrieving the vehicle: The control system controls the motor 13 to rotate in the reverse direction. The motor 13 drives the reel 12 to rotate, releasing the reel wire rope 17, the left lifting wire rope 19, and the right lifting wire rope 20. The first door panel 1 and the second door panel 2 descend together under the action of gravity. When the lower end of the second door panel 2 touches the rubber buffer pad 16 on the limit plate 15, it stops descending, while the first door panel 1 continues to descend. When the upper end of the first door panel 1 is flush with the lower end of the second door panel 2, the motor 13 stops operating, and the fence door closes the entrance and exit.

[0052] The above actions are all controlled by the control system; the specific control programming process is designed according to the characteristics of the vehicle storage and retrieval process and the actual operation needs, which does not belong to the structural scope of the present utility model. Moreover, the circuit layout and connection for realizing the control can be designed according to the hardware structure of the present utility model, and can be overcome by combining the action purpose and relying on the common knowledge in the field of electronic control, so it will not be elaborated.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "left", "right", "front", "rear", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0054] Unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0055] Except for the technical features described in the specification, the rest are the known technologies of those skilled in the art.

[0056] The embodiments listed above are only for understanding the present utility model and are not intended to limit the technical solutions described in the present utility model. Those of ordinary skill in the relevant art can make various changes or deformations on the basis of the technical solutions described in the claims, and all equivalent changes or deformations should be covered within the scope of protection of the claims of the present utility model.

Claims

1. A fence door for pit-type negative-positive-positive parking equipment, comprising two left and right columns fixed to the ground and arranged opposite to each other, a fence door panel and a driving device for driving the fence door panel to rise and fall, a lifting guide device is arranged between the left and right side frames of the fence door panel and the corresponding columns respectively, the driving device drives the fence door panel to descend, which can restrict vehicles from entering and exiting the garage; the driving device drives the door panel to rise, and vehicles can pass under the door panel to enter and exit the garage; the characteristics are: The fence door panel includes a first door panel and a second door panel. When the first door panel and the second door panel rise to the upper end, the first door panel and the second door panel overlap front to back, and the overall height of the fence door panel is less than the sum of the heights of the first door panel and the second door panel; when the first door panel and the second door panel descend to the lower end, the first door panel and the second door panel are distributed up and down, and the overall height of the fence door panel is the sum of the heights of the first door panel and the second door panel.

2. The fence door for pit-type negative-positive-positive parking equipment according to claim 1 is characterized in that: The first door panel and the second door panel both include a rectangular frame composed of four upper, lower, left and right side frames and a fence door core; the lifting guide device includes guide shoes arranged on the left column and the right column and a guide plate arranged on the rear side of the left column and the right column, the left frame or the right frame of the first door panel can slide in the sliding groove of the guide shoe, and the left frame or the right frame of the second door panel can slide along the guide plate.

3. The fence door for pit-type negative-positive-positive parking equipment according to claim 2 is characterized in that: The left and right pillars are H-shaped steels, and the two wing plates of the H-shaped steels serve as the front and rear sides of the left and right pillars respectively; the guide shoes are arranged on the sides facing each other on the webs of the left and right pillars; the horizontal cross-section of the guide plate is C-shaped, and the C-shaped openings of the guide plates on the left and right pillars are opposite to each other, and the front and rear sides of the left frame / right frame of the second door panel are provided with nylon wear-resistant blocks.

4. The fence door for pit-type negative-positive-positive parking equipment according to claim 1 is characterized in that: The driving device is arranged on the upper part of the left column and the right column, and includes a motor, a drum, a drum wire rope, a left reversing wheel, a right reversing wheel, a first pulley, a second pulley, and a third pulley; the first door panel is provided with a left hanging point seat and a right hanging point seat; The motor is arranged on the front side of the right column, the drum is connected to the output shaft of the motor, and the motor drives the drum to rotate; the left reversing wheel is arranged on the top of the left column, and the right reversing wheel is arranged on the top of the right column; the first pulley and the second pulley are arranged on the front side of the left column, and the third pulley is arranged on the front side of the right column; the rotation axis of the left reversing wheel and the right reversing wheel is perpendicular to the direction of the vehicle entering and exiting, and the rotation axis of the motor, the drum, the first pulley, the second pulley, and the third pulley is parallel to the direction of the vehicle entering and exiting; One end of the drum wire rope is connected to the drum, and the other end is provided with a joint. The drum wire rope starts from the drum and is connected to the right lifting wire rope after passing around the drum. The right lifting wire rope passes around the first pulley, the third pulley, and the right reversing wheel in sequence and is connected to the right hanging point seat; one end of the left lifting wire rope is connected to the joint, and the other end passes around the second pulley and the left reversing wheel in sequence and is connected to the left hanging point seat; the distance between the joint and the drum is greater than the stroke of the first door panel.

5. The fence door for pit-type negative-positive-positive parking equipment according to claim 2 is characterized in that: A lifting plate is provided at the bottom of the lower frame of the first door panel. When the first door panel rises, the lifting plate lifts the second door panel to rise. A limiting plate is provided on the rear side of the left column and the right column and at the lower part of the guide plate. When the first door panel descends, the second door panel descends by its own weight, and its lower end finally rests on the limiting plate.

6. The fence door for pit-type negative-positive-positive parking equipment according to claim 5 is characterized in that: The limiting plate is provided with a rubber buffer pad.

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