Novel vehicle limiting device capable of being rapidly switched

Abstract

The utility model relates to the technical field of vehicle limiting, in particular to a novel vehicle limiting device capable of being rapidly switched, which comprises a base, the left side of the back of the base is movably clamped with the right side of a fixing mechanism, a rotating rod is driven to rotate through a coupler and a rotating rotating motor, and the rotating rod rotates to drive an upper threaded pipe to rotate through a bevel gear. An upper threaded pipe rotates to drive an upper moving plate to linearly move through the thread effect and the limiting effect of an upper limiting rod, the upper moving plate linearly moves to drive an upper limiting plate to linearly move, a rotating rod rotates to drive a side rotating rod to rotate through a bevel gear, and the side rotating rod rotates to drive a side threaded pipe to rotate through a bevel gear. The rotating side edge threaded pipe drives the side edge moving plate to do linear motion through the thread effect and the limiting effect of the side edge limiting rod, the linear motion of the side edge moving plate drives the side edge limiting plate to do linear motion, and the vehicle limits of different sizes can be measured by rapidly adjusting and controlling the moving distance of the upper limiting plate and the side edge limiting plate.

Description

Technical Field

[0001] This utility model relates to the field of vehicle clearance technology, specifically a novel vehicle clearance device that can be quickly switched. Background Technology

[0002] Clearance refers to the spatial dimensions required for a train to operate safely along a fixed track. For vehicle clearance, it refers to the envelope dimension of the maximum space formed by considering the basic outline structure of the vehicle, as well as the lateral and vertical sway offsets generated during operation. This dimension is larger than the actual dimensions of the vehicle. At the vehicle manufacturing plant, the clearance of each vehicle is checked to ensure it meets the standards. Generally, different vehicle models have different clearance dimensions. When testing different vehicle models, the clearance fixtures need to be adjusted or replaced in advance.

[0003] Currently, most clearance test benches on the market need to be adapted to different vehicle body sizes. The current solution is to replace different clearance plates for different vehicle body shapes. Two operators work together to replace and adjust the clearance plates, which takes about an hour and has high labor costs. Utility Model Content

[0004] The purpose of this utility model is to provide a novel, quickly switchable vehicle clearance device to solve the problem in the background art where different clearance plates are required for different vehicle shapes, necessitating two operators to perform the replacement and adjustment, with a replacement cycle of approximately one hour, resulting in high labor costs. To achieve the above objective, this utility model provides the following technical solution: a novel, quickly switchable vehicle clearance device, comprising a base, the left side of the back of the base being movably engaged with the right side of a fixing mechanism, the top of the fixing mechanism being fixedly connected to the bottom of an installation mechanism, the inner wall of the installation mechanism being movably engaged with the outer wall of a rotating mechanism, and the rotating mechanism consisting of a motor mounting base, a rotating motor, and a rotating rod;

[0005] The outer wall of the middle part of the rotating mechanism is connected to the outer wall of the top of the upper measuring mechanism. The upper measuring mechanism includes an upper threaded tube, an upper threaded rod, an upper moving plate, two upper limit rods, two upper limit springs, an upper connecting plate, and an upper limit plate. The outer wall of the upper measuring mechanism is rotatably connected to the inner wall of the bottom of the mounting mechanism. The outer walls of the rotating mechanism near both ends are connected to the outer walls of the top of the two side measuring mechanisms. Each of the two side measuring mechanisms consists of a side rotating rod, a side threaded tube, a side threaded rod, a side moving plate, two side limit rods, two side limit springs, and a side limit plate. The outer walls of the two side measuring mechanisms are rotatably connected to the inner walls on both sides of the mounting mechanism.

[0006] Preferably, the base includes a control cabinet, a control panel, and a cable protection box, with the top of the control cabinet movably engaged with the bottom of the control panel, and the back of the bottom of the control cabinet movably engaged with the front of the cable protection box.

[0007] Preferably, the fixing mechanism consists of a fixed bottom beam, two guide rails, and four bottom measuring blocks. The right side of the fixed bottom beam is movably engaged with the left side of the back of the cable protection box, and the top of the fixed bottom beam near the middle is movably engaged with the bottom of the two guide rails. The top of the fixed bottom beam near both sides of the two guide rails is movably engaged with the bottom of the four bottom measuring blocks.

[0008] Preferably, the installation mechanism includes two supporting square tubes, an installation square tube, two installation guardrails, and a climbing ladder. The bottoms of the two supporting square tubes are fixedly connected to the tops of both sides of the fixed base beam, and the tops of the two supporting square tubes are fixedly and movably engaged with the bottoms of both sides of the installation square tube. The top of the back and the top of the front of the installation square tube are movably engaged with the bottoms of the two installation guardrails, and the front of the right side of the installation square tube is movably engaged with the back of the climbing ladder. A rotating through hole is provided on the left side of the installation square tube, a lifting through hole is provided at the bottom of the middle part of the installation square tube, an adjustment through hole is provided on the opposite side of the two supporting square tubes, and a sliding through hole is provided on the opposite side of the two supporting square tubes near the top and near the bottom. A movable through hole is provided on the bottom of the installation square tube near both sides.

[0009] Preferably, the outer wall of the motor mounting base is movably engaged with the inner wall on the right side of the mounting square tube, and the top of the motor mounting base is movably engaged with the bottom of the rotating motor. One end of the rotating motor is fixedly connected to one end of the rotating rod via a coupling, and the outer wall of the other end of the rotating rod is rotatably connected to the inner wall of the rotating through hole. The outer wall in the middle of the rotating rod and the outer walls near both ends are respectively provided with bevel gears.

[0010] Preferably, the outer wall of the top of the upper threaded tube is provided with a bevel gear, and the outer wall of the top of the upper threaded tube is connected to the outer wall of the middle part of the rotating rod through the bevel gear. The inner wall of the upper threaded tube is threaded to the outer wall of the upper threaded rod, and the bottom of the upper threaded rod is fixedly connected to the top of the middle part of the upper moving plate. The top of the upper moving plate near both sides is provided with upper limit through holes, and the inner walls of the two upper limit through holes are movably sleeved with the outer walls of the two upper limit rods. The outer walls of the bottom of the two upper limit rods are movably sleeved with the inner walls of the two upper limit springs, and the bottom of the two upper limit rods are movably engaged with the top of the upper connecting plate. The bottom of the upper connecting plate is movably engaged with the top of the upper limit plate, and the outer wall of the upper threaded tube is rotatably connected to the inner wall of the lifting through hole. The outer walls of the two upper limit rods are movably sleeved with the inner walls of the two moving through holes.

[0011] Preferably, the outer walls of the top and middle sections of the side rotating rod are respectively provided with bevel gears, and the outer walls of the top of the two side rotating rods are connected to the outer walls of the rotating rod near both ends through bevel gears. The outer wall of one end of the side threaded tube is provided with a bevel gear, and the outer wall of one end of the side threaded tube is connected to the outer wall of the middle section of the side rotating rod through a bevel gear. The inner wall of the side threaded tube is threaded to the outer wall of the side threaded rod, and one end of the side threaded rod is fixedly connected to the left side of the side moving plate. Side limiting through holes are provided on the left side near the top and the left side near the bottom of the plate, respectively. The inner walls of the two side limiting through holes are movably sleeved with the outer walls of the two side limiting rods. The outer walls of one end of the two side limiting rods are movably sleeved with the inner walls of the two side limiting springs. One end of each side limiting rod is fixedly connected to the left side of the side limiting plate. The outer wall of the side threaded tube is rotatably connected with the inner wall of the adjusting through hole. The outer walls of the two side limiting rods are movably sleeved with the inner walls of the two sliding through holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, by starting a rotating motor, the rotating motor drives a rotating rod to rotate via a coupling. The rotation of the rotating rod drives an upper threaded tube to rotate via a bevel gear. The rotation of the upper threaded tube, through the action of its threads and the limiting action of the upper limit rod, drives the upper moving plate to move linearly. The linear movement of the upper moving plate drives the upper limit plate to move linearly. The rotation of the rotating rod drives a side rotating rod to rotate via a bevel gear. The rotation of the side rotating rod, through the action of its threads and the limiting action of the side limit rod, drives the side moving plate to move linearly. The linear movement of the side moving plate drives the side limit plate to move linearly. By quickly adjusting the distance between the upper limit plate and the side limit plate, the clearance of vehicles of different sizes can be measured without the need for manual replacement that takes a lot of time.

[0014] In this invention, when the vehicle touches the upper limit plate and the side limit plate during clearance measurement, the upper limit plate and the side limit plate move linearly through the upper limit through hole and the side limit through hole by the elastic action of the upper limit spring and the side limit spring. This can provide buffering and prevent scratches to the vehicle paint during clearance detection. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is an exploded view of the present invention;

[0018] Figure 4 This is an exploded view of the rotating mechanism in this utility model;

[0019] Figure 5 This is an exploded view of the upper measuring mechanism in this utility model;

[0020] Figure 6 This is an exploded view of the side measuring mechanism in this utility model.

[0021] In the diagram: 1. Base; 101. Control cabinet; 102. Control panel; 103. Cable protection box; 2. Fixing mechanism; 201. Fixed bottom beam; 202. Guide rail; 203. Bottom measuring block; 3. Installation mechanism; 301. Supporting square tube; 302. Installing square tube; 303. Installing guardrail; 304. Top ladder; 4. Rotating mechanism; 401. Motor mounting base; 402. Rotating motor; 403. Rotating rod; 5. Upper Measuring mechanism; 501, upper threaded tube; 502, upper threaded rod; 503, upper moving plate; 504, upper limit rod; 505, upper limit spring; 506, upper connecting plate; 507, upper limit plate; 6, side measuring mechanism; 601, side rotating rod; 602, side threaded tube; 603, side threaded rod; 604, side moving plate; 605, side limit rod; 606, side limit spring; 607, side limit plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 6 This utility model provides a technical solution: a novel vehicle clearance device that can be quickly switched, including a base 1, the left side of the back of the base 1 is movably engaged with the right side of the fixing mechanism 2, the top of the fixing mechanism 2 is fixedly connected with the bottom of the mounting mechanism 3, the inner wall of the mounting mechanism 3 is movably engaged with the outer wall of the rotating mechanism 4, and the rotating mechanism 4 is composed of a motor mounting base 401, a rotating motor 402 and a rotating rod 403;

[0024] The outer wall of the middle part of the rotating mechanism 4 is connected to the outer wall of the top of the upper measuring mechanism 5. The upper measuring mechanism 5 includes an upper threaded tube 501, an upper threaded rod 502, an upper moving plate 503, two upper limit rods 504, two upper limit springs 505, an upper connecting plate 506, and an upper limit plate 507. The outer wall of the upper measuring mechanism 5 is rotatably connected to the inner wall of the bottom of the mounting mechanism 3. The outer walls of the rotating mechanism 4 near both ends are connected to the outer walls of the top of the two side measuring mechanisms 6. The two side measuring mechanisms 6 are each composed of a side rotating rod 601, a side threaded tube 602, a side threaded rod 603, a side moving plate 604, two side limit rods 605, two side limit springs 606, and a side limit plate 607. The outer walls of the two side measuring mechanisms 6 are rotatably connected to the inner walls on both sides of the mounting mechanism 3.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the base 1 includes a control cabinet 101, a control panel 102, and a cable protection box 103. The top of the control cabinet 101 is movably connected to the bottom of the control panel 102, and the back of the bottom of the control cabinet 101 is movably connected to the front of the cable protection box 103. The electrical system and power supply system inside the control cabinet 101 can be controlled through the control panel 102, thereby controlling the device.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the fixing mechanism 2 consists of a fixed bottom beam 201, two guide rails 202, and four bottom measuring blocks 203. The right side of the fixed bottom beam 201 is movably engaged with the left side of the back of the cable protection box 103, and the top of the fixed bottom beam 201 near the middle is movably engaged with the bottom of the two guide rails 202. The top of the fixed bottom beam 201 near both sides of the two guide rails 202 is movably engaged with the bottom of the four bottom measuring blocks 203. The guide rails 202 can simulate the vehicle driving process.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the installation mechanism 3 includes two supporting square tubes 301, an installation square tube 302, two installation guardrails 303, and a climbing ladder 304. The bottoms of the two supporting square tubes 301 are fixedly connected to the tops of both sides of the fixed bottom beam 201, and the tops of the two supporting square tubes 301 are fixedly and movably engaged with the bottoms of both sides of the installation square tube 302. The top of the back and the top of the front of the installation square tube 302 are movably engaged with the bottoms of the two installation guardrails 303, and the front of the right side of the installation square tube 302 is movably engaged with the back of the climbing ladder 304. A rotating through hole is provided on the left side of the installation square tube 302, a lifting through hole is provided at the bottom of the middle part of the installation square tube 302, and an adjustment through hole is provided on the opposite side of the two supporting square tubes 301. A sliding through hole is provided on the opposite side of the two supporting square tubes 301 near the top and near the bottom, respectively. A movable through hole is provided on the bottom of the installation square tube 302 near both sides. The top of the device can be accessed through the climbing ladder 304 for convenient maintenance.

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the outer wall of the motor mounting base 401 is movably engaged with the inner wall on the right side of the mounting square tube 302, and the top of the motor mounting base 401 is movably engaged with the bottom of the rotating motor 402. One end of the rotating motor 402 is fixedly connected to one end of the rotating rod 403 through a coupling, and the outer wall of the other end of the rotating rod 403 is rotatably connected to the inner wall of the rotating through hole. The outer wall in the middle of the rotating rod 403 and the outer wall near both ends are respectively provided with bevel gears. When the rotating motor 402 is started, the rotating motor 402 drives the rotating rod 403 to rotate through the coupling.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a bevel gear is provided on the outer wall of the top of the upper threaded tube 501, and the outer wall of the top of the upper threaded tube 501 is connected to the outer wall of the middle part of the rotating rod 403 through the bevel gear. The inner wall of the upper threaded tube 501 is threadedly connected to the outer wall of the upper threaded rod 502, and the bottom of the upper threaded rod 502 is fixedly connected to the top of the middle part of the upper moving plate 503. The top of the upper moving plate 503 near both sides is provided with upper limit through holes, and the inner walls of the two upper limit through holes are movably sleeved with the outer walls of the two upper limit rods 504, respectively. The outer walls of the bottom of the two upper limit rods 504 are movably sleeved with the inner walls of the two upper limit springs 505, respectively. Furthermore, the bottoms of both upper limit rods 504 are movably engaged with the top of the upper connecting plate 506, the bottom of the upper connecting plate 506 is movably engaged with the top of the upper limit plate 507, and the outer wall of the upper threaded tube 501 is rotatably connected to the inner wall of the lifting through hole. The outer walls of the two upper limit rods 504 are respectively movably sleeved with the inner walls of the two movable through holes. The rotation of the rotating rod 403 drives the upper threaded tube 501 to rotate through the bevel gear. The rotation of the upper threaded tube 501 drives the upper moving plate 503 to move linearly through the thread action and the limiting action of the upper limit rods 504. The linear movement of the upper moving plate 503 drives the upper limit plate 507 to move linearly.

[0030] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, bevel gears are respectively provided on the outer wall of the top and middle of the side rotating rod 601, and the outer walls of the top of the two side rotating rods 601 are connected to the outer walls of the rotating rod 403 near both ends through bevel gears. A bevel gear is provided on the outer wall of one end of the side threaded tube 602, and the outer wall of one end of the side threaded tube 602 is connected to the outer wall of the middle of the side rotating rod 601 through bevel gears. The inner wall of the side threaded tube 602 is threadedly connected to the outer wall of the side threaded rod 603, and one end of the side threaded rod 603 is connected to the side rotating rod 403. The left side of the movable plate 604 is fixedly connected. Side limiting through holes are respectively provided on the left side near the top and the left side near the bottom of the side movable plate 604. The inner walls of the two side limiting through holes are movably sleeved with the outer walls of the two side limiting rods 605. The outer walls of one end of the two side limiting rods 605 are movably sleeved with the inner walls of the two side limiting springs 606. One end of each side limiting rod 605 is fixedly connected to the left side of the side limiting plate 607. The outer wall of the side threaded tube 602 rotates with the inner wall of the adjusting through hole. The two side limiting rods 605 are connected, with their outer walls movably sleeved onto the inner walls of the two sliding through holes. The rotation of the rotating rod 403 drives the side rotating rod 601 to rotate via a bevel gear. The rotation of the side rotating rod 601 drives the side threaded tube 602 to rotate via the bevel gear. The rotating side threaded tube 602, through its threaded action and the limiting action of the side limiting rods 605, drives the side moving plate 604 to move linearly. The linear movement of the side moving plate 604 drives the linear movement of the side limiting plate 607. The upper limit plate 50 is quickly adjusted. The distance that the upper limit plate 507 and the side limit plate 607 move can be used to measure the vehicle limit of different sizes without the need for manual replacement of a lot of time. When measuring the limit, when the vehicle touches the upper limit plate 507 and the side limit plate 607, the upper limit spring 505 and the side limit spring 606 will cause the upper limit plate 507 and the side limit plate 607 to move linearly through the upper limit through hole and the side limit through hole, which can buffer and prevent scratches to the vehicle paint during the limit detection process.

[0031] The method of use and advantages of this utility model: When this novel, quickly switchable vehicle clearance device is in operation, the working process is as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, by starting the rotating motor 402, the rotating motor 402 drives the rotating rod 403 to rotate via a coupling. The rotation of the rotating rod 403 drives the upper threaded tube 501 to rotate via a bevel gear. The rotation of the upper threaded tube 501, through the thread action and the limiting action of the upper limit rod 504, drives the upper moving plate 503 to move linearly. The linear movement of the upper moving plate 503 drives the upper limit plate 507 to move linearly. The rotation of the rotating rod 403 drives the side rotating rod 601 to rotate via a bevel gear. The rotation of the side rotating rod 601 drives the side threaded tube 602 to rotate via a bevel gear. The rotating side threaded tube 602, through the thread action and the limiting action of the side limit rod 605, drives the side... The side moving plate 604 moves linearly, which in turn drives the side limit plate 607 to move linearly. By quickly adjusting the distance between the upper limit plate 507 and the side limit plate 607, the vehicle limit of different sizes can be measured without the need for manual replacement that takes a lot of time. When measuring the limit, when the vehicle touches the upper limit plate 507 and the side limit plate 607, the upper limit spring 505 and the side limit spring 606 cause the upper limit plate 507 and the side limit plate 607 to move linearly through the upper limit through hole and the side limit through hole, which can provide buffering and prevent scratches to the vehicle paint during the limit detection process.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel vehicle clearance device with quick switching capability, comprising a base (1), characterized in that: The left side of the back of the base (1) is movably engaged with the right side of the fixing mechanism (2), the top of the fixing mechanism (2) is fixedly connected with the bottom of the mounting mechanism (3), the inner wall of the mounting mechanism (3) is movably engaged with the outer wall of the rotating mechanism (4), and the rotating mechanism (4) is composed of a motor mounting base (401), a rotating motor (402), and a rotating rod (403). The outer wall of the middle part of the rotating mechanism (4) is connected to the outer wall of the top of the upper measuring mechanism (5) in a transmission connection. The upper measuring mechanism (5) includes an upper threaded tube (501), an upper threaded rod (502), an upper moving plate (503), two upper limit rods (504), two upper limit springs (505), an upper connecting plate (506), and an upper limit plate (507). The outer wall of the upper measuring mechanism (5) is rotatably connected to the inner wall of the bottom of the mounting mechanism (3). The outer walls of the rotating mechanism (4) near both ends are connected to the outer walls of the top of the two side measuring mechanisms (6) in a transmission connection. The two side measuring mechanisms (6) are each composed of a side rotating rod (601), a side threaded tube (602), a side threaded rod (603), a side moving plate (604), two side limit rods (605), two side limit springs (606), and a side limit plate (607). The outer walls of the two side measuring mechanisms (6) are rotatably connected to the inner walls on both sides of the mounting mechanism (3).

2. The novel quickly switchable vehicle clearance device according to claim 1, characterized in that: The base (1) includes a control cabinet (101), a control panel (102), and a cable protection box (103). The top of the control cabinet (101) is movably connected to the bottom of the control panel (102), and the back of the bottom of the control cabinet (101) is movably connected to the front of the cable protection box (103).

3. A novel, quickly switchable vehicle clearance device according to claim 2, characterized in that: The fixing mechanism (2) consists of a fixed bottom beam (201), two guide rails (202) and four bottom measuring blocks (203). The right side of the fixed bottom beam (201) is movably engaged with the left side of the back of the cable protection box (103), and the top of the fixed bottom beam (201) near the middle is movably engaged with the bottom of the two guide rails (202). The top of the fixed bottom beam (201) near both sides of the two guide rails (202) is movably engaged with the bottom of the four bottom measuring blocks (203).

4. A novel, quickly switchable vehicle clearance device according to claim 3, characterized in that: The installation mechanism (3) includes two supporting square tubes (301), an installation square tube (302), two installation guardrails (303), and a climbing ladder (304). The bottoms of the two supporting square tubes (301) are fixedly connected to the tops of both sides of the fixed bottom beam (201), and the tops of the two supporting square tubes (301) are respectively fixedly and movably engaged with the bottoms of both sides of the installation square tube (302). The top of the back and the top of the front of the installation square tube (302) are respectively movably engaged with the bottoms of the two installation guardrails (303). The mounting square tube (302) is movably connected to the front of the right side of the climbing ladder (304), and a rotating through hole is provided on the left side of the mounting square tube (302). A lifting through hole is provided at the bottom of the middle part of the mounting square tube (302). An adjustment through hole is provided on the opposite side of the two supporting square tubes (301). A sliding through hole is provided on the opposite side of the two supporting square tubes (301) near the top and near the bottom. A movable through hole is provided on the bottom of the mounting square tube (302) near both sides.

5. A novel, quickly switchable vehicle clearance device according to claim 4, characterized in that: The outer wall of the motor mounting base (401) is movably engaged with the inner wall on the right side of the mounting square tube (302), and the top of the motor mounting base (401) is movably engaged with the bottom of the rotating motor (402). One end of the rotating motor (402) is fixedly connected to one end of the rotating rod (403) through a coupling, and the outer wall of the other end of the rotating rod (403) is rotatably connected to the inner wall of the rotating through hole. The outer wall in the middle of the rotating rod (403) and the outer wall near both ends are respectively provided with bevel gears.

6. A novel, rapidly switchable vehicle clearance device according to claim 5, characterized in that: The outer wall of the top of the upper threaded tube (501) is provided with a bevel gear, and the outer wall of the top of the upper threaded tube (501) is connected to the outer wall of the middle part of the rotating rod (403) through the bevel gear. The inner wall of the upper threaded tube (501) is threadedly connected to the outer wall of the upper threaded rod (502), and the bottom of the upper threaded rod (502) is fixedly connected to the top of the middle part of the upper moving plate (503). The top of the upper moving plate (503) near both sides is provided with upper limit through holes, and the inner walls of the two upper limit through holes are respectively connected to the two upper limit rods ( The outer wall of the upper limit rod (504) is movably sleeved, and the outer wall of the bottom of the two upper limit rods (504) is movably sleeved with the inner wall of the two upper limit springs (505), and the bottom of the two upper limit rods (504) is movably snapped with the top of the upper connecting plate (506). The bottom of the upper connecting plate (506) is movably snapped with the top of the upper limit plate (507), and the outer wall of the upper threaded tube (501) is rotatably connected with the inner wall of the lifting through hole. The outer walls of the two upper limit rods (504) are movably sleeved with the inner walls of the two moving through holes.

7. A novel, quickly switchable vehicle clearance device according to claim 5, characterized in that: The outer walls of the top and middle sections of the side rotating rod (601) are respectively provided with bevel gears, and the outer walls of the top of the two side rotating rods (601) are connected to the outer walls of the rotating rod (403) near both ends via bevel gears. The outer wall of one end of the side threaded tube (602) is provided with a bevel gear, and the outer wall of one end of the side threaded tube (602) is connected to the outer wall of the middle section of the side rotating rod (601) via bevel gears. The inner wall of the side threaded tube (602) is threadedly connected to the outer wall of the side threaded rod (603), and one end of the side threaded rod (603) is fixedly connected to the left side of the side moving plate (604). The side movable plate (604) is provided with side limiting through holes on the left side near the top and the left side near the bottom, and the inner walls of the two side limiting through holes are movably sleeved with the outer walls of the two side limiting rods (605). The outer walls of one end of the two side limiting rods (605) are movably sleeved with the inner walls of the two side limiting springs (606), and one end of each side limiting rod (605) is fixedly connected to the left side of the side limiting plate (607). The outer wall of the side threaded tube (602) is rotatably connected with the inner wall of the adjusting through hole, and the outer walls of the two side limiting rods (605) are movably sleeved with the inner walls of the two sliding through holes.

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