Internal gas branching distributor for hydrogen energy automobile

Abstract

The invention discloses an internal gas branching distributor for a hydrogen energy automobile, relates to the technical field of gas path distributors, and solves the problems that the distance between joints arranged at the bottom of an existing hydrogen path distributor is small, torsion disassembly of a traditional wrench can be blocked, disassembly and assembly of nuts on the joints are obstructed, and operation and use are tedious and inconvenient. According to the internal gas branching distributor for the hydrogen energy automobile, two connectors are symmetrically installed at the left end and the right end of a distributor body in a locking mode, and a connector is also installed in the middle of the top end of the distributor body in a locking mode; the whole installation clamping piece is formed by welding four L-shaped clamping plates in the front and back direction and four positioning rings at the bottom together, wherein the four positioning rings are welded and fixed together through two transverse supporting connecting rods in the front and back direction. Nuts can be loosened and tightened through one sliding block and a driving mechanism on the sliding block, the situation that four nuts at the bottom are respectively provided with one sliding block and one driving mechanism in a matched mode is omitted, and the device structure is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of gas distributors, and specifically to an internal gas shunt distributor for hydrogen energy vehicles. Background Art

[0002] In 2021, it was clearly stipulated that in the newly added or updated public vehicles such as buses, taxis, and logistics distribution vehicles in the national ecological civilization pilot areas and key areas for air pollution prevention and control, the proportion of new energy vehicles should not be less than 80%. By 2025, the sales volume of new energy vehicle new cars should reach about 20% of the total sales volume of new car sales. This means that in the Chinese market, the era of new energy vehicles has officially arrived, and fuel vehicles have bid farewell to their golden age. However, different from what people once thought that the pure electric mode was the ultimate power form of the future new energy vehicle industry, hydrogen fuel cell vehicles have emerged suddenly, and the internal gas shunt distributor is an important component in hydrogen fuel cells.

[0003] For example, the patent with the patent number CN201922222882.7 discloses an internal gas shunt distributor for hydrogen energy vehicles, including a base and a bottom plate. The top of the base is respectively provided with a combustion chamber air gas path interface and a combustion chamber hydrogen gas path interface. The front side of the base is provided with an equipment temperature control system interface. The top of the base is provided with a base mounting hole, and a sinking groove is provided at the top of the base mounting hole. The bottom of the base is provided with a bottom plate, and a bottom plate mounting hole is provided at the position corresponding to the base mounting hole on the bottom plate. Positioning holes are provided at the corresponding positions on the side walls of the base and the bottom plate. The base and the bottom plate are both made of 7075 aviation aluminum material by 3D printing. The advantages of the present invention are as follows: The base and the bottom plate are both made of 7075 aviation aluminum material by 3D printing, which has the advantages of being lightweight, durable, and having ultra-high precision, can prevent acid-base corrosion during use, extends the service life of the gas distributor, is convenient for installation and positioning through the setting of positioning holes, and the bolts for assembly are hidden in the sinking groove, avoiding the situation of affecting the assembly of adjacent components and ensuring the aesthetics.

[0004] The spacing between the joints arranged at the bottom of the existing hydrogen gas distributor is small, which will block the torsional disassembly of a traditional wrench, causing obstacles to the disassembly and assembly of the nuts on the joints, and the operation and use are relatively cumbersome and inconvenient. Moreover, the joints at the bottom of the distributor are vertically downward, and when tightening or loosening the hydrogen gas pipe, workers need to drill under the vehicle and operate in the cramped space under the vehicle, resulting in great difficulty, time-consuming and laborious for the disassembly, repair and replacement of the hydrogen gas pipe. Summary of the Invention

[0005] The purpose of the present invention is to provide an internal gas shunt distributor for hydrogen energy vehicles to solve the problem that the spacing between the joints arranged at the bottom is small, which will block the torsional disassembly of a traditional wrench, causing obstacles to the disassembly and assembly of the nuts on the joints, and the operation and use are relatively cumbersome and inconvenient as mentioned in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: an internal gas branch distributor for a hydrogen energy vehicle, comprising a distributor body; the distributor body is an elongated rectangular structure as a whole, and a locking sleeve is provided with a mounting clamp; the distributor body comprises

[0007] Joint, two joints are symmetrically locked and installed at the left and right ends of the distributor body, and a joint is also locked and installed at the middle of the top of the distributor body, and four joints are welded at equal intervals at the bottom of the distributor body; the installation clamp is composed of four L-shaped clamps at the front and rear and four positioning rings at the bottom, which are welded together, and the four positioning rings are fixed together by welding two cross bracing connecting rods at the front and rear; the installation clamp also includes a limit rod, and three limit rods are welded around the bottom of the four positioning rings, and two semicircular limit plates are welded at intervals on the bottom section of the limit rod; a nut, the nut is threadedly connected to the head end of the joint;

[0008] Mounting fixtures include

[0009] Track bar, the track bar is welded on the cross brace connecting rod on the front side of the mounting fixture, an L-shaped slider is slidably mounted on the track bar, a driving track is slidably mounted on the slider, and a rectangular positioning frame is rotatably connected to the bottom of the head end of the driving track;

[0010] Positioning ring, four positioning rings are welded at equal intervals on the bottom of the mounting fixture, and a tensioning gear is rotatably installed under the bottom of the four positioning rings; the positioning frame also includes positioning rods, two positioning rods are symmetrically welded on the top section of the vertical support sliding shaft, and the lower sliding top is attached to the top of the rotating shaft; the rotating shaft, the rotating shaft is welded and fixed to the top of the positioning frame, and the rotating shaft and the head end of the driving track are rotatably interlaced and matched, and the vertical support sliding shaft extends upward through the rotating shaft; the driving track includes a positioning sleeve, two positioning sleeves are symmetrically welded on the front end section of the driving track, and the two positioning rods are correspondingly interlaced and matched with the two positioning sleeves.

[0011] Preferably, the tensioning gears are rotatably matched with the three groups of semicircular limiting plates on the bottom sections of the three limiting rods, and the four nuts at the bottom pass through the four tensioning gears.

[0012] Preferably, the slider comprises

[0013] Track shafts, two track shafts are symmetrically welded to the upper and lower sides of the slider, and the drive track is sleeved with the two track shafts;

[0014] The vertical support rod is inserted into the protruding plate at the right end of the slider through the spring push, and the vertical support rod corresponds to the four equidistant holes on the track bar for selective plug-in matching;

[0015] The driving mechanism is rotatably mounted on the cross bracing section of the slider.

[0016] Preferably, the driving mechanism includes

[0017] a driving gear rotatably mounted at the left end of the cross brace section of the slider, and a cross nut is welded to the head end of the rotating shaft of the driving gear;

[0018] a driven gear rotatably mounted at the middle position of the cross brace section of the slider, and the driven gear is in meshing contact with the driving gear.

[0019] Preferably, a lever is supported and welded on the outer circumference of the driven gear, and this lever is correspondingly inserted and matched with the inner chute of the driving track.

[0020] Preferably, the positioning frame includes

[0021] a dial plate slidably penetrating through the bottom plate of the positioning frame, and the bottom section of the dial plate is of an inclined section structure, and this inclined section is inserted downward and correspondingly inserted and matched with the tightening and loosening gear;

[0022] a vertical support sliding shaft, a convex block is welded to the top end of the dial plate, a vertical support sliding shaft is welded to the top end of this convex block, and a lifting knob is welded and fixed to the topmost end of the vertical support sliding shaft.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. Through the power transmission of the driven gear, the driving track and the dial plate, the present invention can convert the vertical torsional tightening and loosening torque of the bottom nut into a horizontal torsional tightening and loosening torque, so that the worker only needs to simply squat down and use an electric tool to directly horizontally insert and dock with the driving gear to complete the tightening and loosening of the nut, saving the trouble of manually bending down and getting under the vehicle to use a wrench to vertically twist and disassemble the nut, simplifying the disassembly and assembly steps and difficulty of the hydrogen pipe vertically connected to the distributor, and being convenient, time-saving and labor-saving;

[0025] 2. The tightening and loosening gear of the present invention can rotate forward and backward along the three groups of semi-circular limiting plates on the three limiting rods to tighten and loosen the nut. Compared with the traditional wrench for torsional disassembly, it is more applicable to the cramped space between the four bottom joints, which helps to improve the disassembly and assembly efficiency of the bottom nut and the hydrogen pipe;

[0026] 3. The slider of the present invention can slide left and right along the track bar to select the position corresponding to the four bottom joints to tighten and loosen the nuts on the four joints. Furthermore, the tightening and loosening of the nut can be completed by one slider and the driving mechanism thereon, saving the need to separately provide one slider and driving mechanism for each of the four bottom nuts, simplifying the device structure, facilitating the weight reduction of the device and reducing the cost;

[0027] 4. The diameter of the driving gear of the present invention is relatively small, and its transmission ratio with the driven gear is relatively large, which can amplify the torque, facilitating the electric screw to tighten and loosen the nut with a relatively small torsional force. This reduces the power and compatibility requirements of the external electric disassembly tool and decreases the procurement cost of the compatible tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the present invention;

[0029] Figure 2 It is a three-dimensional structural diagram of the rear side of the present invention;

[0030] Figure 3 It is a three-dimensional structural diagram of the bottom of the present invention;

[0031] Figure 4 It is a schematic diagram of the installation position of the positioning ring of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the installation clip of the present invention;

[0033] Figure 6 It is a schematic structural diagram of the slider of the present invention;

[0034] Figure 7 It is a schematic structural diagram of the bottom of the slider of the present invention;

[0035] Figure 8 It is a schematic structural diagram of the positioning frame of the present invention;

[0036] Figure 9 For the present invention Figure 5 The enlarged structural diagram of part A in;

[0037] In the figure, the correspondence between the part names and the drawing reference numerals is as follows:

[0038] 1. Distributor main body; 101. Connector; 102. Nut; 2. Installation clip; 201. Track bar; 202. Positioning ring; 203. Limiting rod; 3. Tightening and loosening gear; 4. Driving track; 401. Positioning socket; 5. Slider; 501. Driving gear; 502. Driven gear; 503. Vertical support insertion rod; 504. Track shaft; 6. Positioning frame; 601. Pushing plate; 602. Vertical support sliding shaft; 603. Positioning insertion rod; 604. Rotating shaft 604. DETAILED DESCRIPTION OF THE INVENTION

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] Please refer to Figures 1 to 9, an embodiment provided by the present invention: an internal gas shunt distributor for a hydrogen energy vehicle, including a distributor main body 1; the distributor main body 1 is integrally in a long rectangular structure, and there is an installation clip 2 clamped on the locking sleeve thereof; the distributor main body 1 includes a joint 101, and two joints 101 are symmetrically and lockingly installed at the left and right ends of the distributor main body 1, and a joint 101 is also lockingly installed at the middle of the top end of the distributor main body 1. Four joints 101 are welded at equal intervals at the bottom of the distributor main body 1;

[0041] A nut 102, the nut 102 is threadedly connected to the first end of the joint 101;

[0042] The installation clip 2 includes

[0043] A track bar 201, the track bar 201 is welded on the cross brace connecting rod on the front side of the installation clip 2, and an L-shaped slider 5 is slidably installed on the track bar 201. A driving track 4 is slidably installed on this slider 5, and a rectangular positioning frame 6 is rotatably connected to the bottom of the first end of the driving track 4; the installation clip 2 is integrally welded by four front and rear L-shaped clamping plates and four positioning rings 202 at the bottom. Among them, the four positioning rings 202 are welded and fixed together by two front and rear cross brace connecting rods. The installation clip 2 can fixedly connect the L-shaped slider 5 and the tensioning gear 3 with the distributor main body 1; the installation clip 2 further includes a limiting rod 203. Three limiting rods 203 are welded around the bottom of the four positioning rings 202, and two semi-circular limiting plates are welded at intervals on the bottom section of the limiting rod 203;

[0044] The positioning ring 202, the four positioning rings 202 are welded at equal intervals at the bottom of the installation clip 2, and a tensioning gear 3 is rotatably installed below the bottom of each of the four positioning rings 202; the tensioning gear 3 is rotatably matched with three groups of semi-circular limiting plates on the bottom section of the three limiting rods 203, and the four nuts 102 at the bottom pass through the four tensioning gears 3 correspondingly. The tensioning gear 3 can rotate forward and backward along the three groups of semi-circular limiting plates on the three limiting rods 203 to loosen and tighten the nut 102 for disassembly and assembly. Compared with the torsional disassembly of a traditional wrench, it is more suitable for the cramped space between the four bottom joints 101, which helps to improve the disassembly and assembly efficiency of the bottom nut 102 and the hydrogen pipe.

[0045] Furthermore, the slider 5 includes

[0046] Track shafts 504, two track shafts 504 are symmetrically welded on the upper and lower sides of the slider 5, and the driving track 4 is sleeved and matched with the two track shafts 504;

[0047] Vertical support rod 503, the vertical support rod 503 is inserted through the protruding plate at the right end of the slider 5 by spring pushing, and the vertical support rod 503 is selectively inserted and fitted with four equally spaced jacks opened on the track bar 201. The slider 5 can slide left and right along the track bar 201 to select the position corresponding to the four connectors 101 at the bottom to loosen and tighten the nuts 102 on the four connectors 101. Furthermore, by one slider 5 and the driving mechanism thereon, the loosening and tightening of the nut 102 can be completed, eliminating the need to separately match one slider 5 and the driving mechanism for each of the four nuts 102 at the bottom, simplifying the device structure, facilitating the weight reduction of the device and reducing the cost. And the vertical support rod 503 can position the slider 5 at the use position after sliding adjustment;

[0048] Driving mechanism, the driving mechanism is rotatably installed on the cross brace section of the slider 5.

[0049] Furthermore, the driving mechanism includes

[0050] Driving gear 501, the driving gear 501 is rotatably installed at the left end of the cross brace section of the slider 5, and a cross nut is welded to the first end of the rotating shaft of the driving gear 501, which can facilitate the docking drive of an external electric screwdriver;

[0051] Driven gear 502, the driven gear 502 is rotatably installed at the middle position of the cross brace section of the slider 5, and the driven gear 502 is in meshing contact with the driving gear 501. The driving gear 501 has a smaller diameter and a larger transmission ratio with the driven gear 502, which can amplify the torque, facilitating the electric screw to loosen and tighten the nut 102 with a smaller torsional force. This reduces the power and adaptation requirements of the external electric disassembly tool and reduces the procurement cost of the adaptation tool.

[0052] Furthermore, a lever is supported and welded on the outer circumference of the driven gear 502. This lever is selectively inserted and fitted with the inner chute of the driving track 4. Through the lever, the driven gear 502 can rotate to drive the driving track 4 to slide left and right along the two track shafts 504 to provide the disassembly power for the loosening and tightening gear 3 to the nut 102.

[0053] Furthermore, the positioning frame 6 includes

[0054] The dial plate 601 is slidably mounted on the bottom plate of the positioning frame 6, and the bottom section of the dial plate 601 is an oblique section structure. The downward insertion of this oblique section corresponds to the top insertion of the tension gear 3. Through the dial plate 601, the positioning frame 6 can follow the driving track 4 to slide and drive the tension gear 3 to rotate forward and reverse, and tighten the nut 102. The dial plate 601 is installed by a spring push, and this can achieve a one-way driving function similar to a ratchet with the bottom oblique section. Through the inclined guide function of the oblique section, the dial plate 601 can be pushed upward and pulled off by the tooth piece on the tension gear 3 when sliding back, so as to avoid the dial plate 601 from pushing and driving the tension gear 3 to rotate and reset when sliding back, causing the tension function to fail;

[0055] The top of the vertical support sliding shaft 602 and the dial plate 601 is welded with a convex block, the top of the convex block is welded with a vertical support sliding shaft 602, and the top of the vertical support sliding shaft 602 is welded and fixed with a lifting knob.

[0056] Furthermore, the positioning frame 6 also includes

[0057] Positioning rods 603, two positioning rods 603 are symmetrically welded on the top section of the vertical support sliding shaft 602, and the lower sliding top is attached to the top of the rotating shaft 604;

[0058] The rotating shaft 604 is welded and fixed to the top of the positioning frame 6, and the rotating shaft 604 is rotatably interlaced with the head end of the driving track 4. The vertical support sliding shaft 602 extends upward through the rotating shaft 604. The rotating shaft 604 can be used to rotate and switch the direction of the positioning frame 6, change the driving rotation direction of the dial plate 601 on the tensioning gear 3, and realize the switching of the tightening and loosening operation of the nut 102.

[0059] Furthermore, the driving rail 4 includes positioning sleeves 401, two positioning sleeves 401 are symmetrically welded on the front end section of the driving rail 4, two positioning rods 603 are correspondingly inserted and matched with the two positioning sleeves 401, and the two positioning sleeves 401 can connect and position the positioning frame 6 and the dial plate 601 in the use state after rotation adjustment.

[0060] In another embodiment, a hexagonal nut can be welded to the outer circumference of the cross nut, so that both the hexagonal screwdriver head and the cross screwdriver head can be docked with the driving gear 501 to adapt to the loosening and tightening disassembly nut 102, thereby expanding the applicability of the dispenser to tools.

[0061] Working principle: The installation clamp 2 can fix the L-shaped slider 5 and the tension gear 3 with the distributor body 1. The cross nut on the driving gear 501 can facilitate the docking drive of the external electric screwdriver. The driving gear 501 meshes and drives the driven gear 502. The diameter of the driven gear 501 is small, and the transmission ratio between it and the driven gear 502 is large, which can amplify the torque, which is conducive to the electric screw to achieve the tightening of the nut 102 with a small torsional force.

[0062] Through the lever, the driven gear 502 can rotate to drive the driving track 4 to slide left and right along the two track shafts 504. Through the dial plate 601, the positioning frame 6 can follow the driving track 4 to slide and push to drive the tightening and loosening gear 3 to rotate forward and backward, so as to tighten and loosen the nut 102. Moreover, the dial plate 601 is installed by spring pushing, and this, combined with the bottom bevel planing section, can realize a one-way driving function similar to a ratchet. Through the inclined plane guiding function of the bevel planing section, the dial plate 601 can be pushed upward and disengaged by the teeth on the tightening and loosening gear 3 when sliding back, avoiding the dial plate 601 also pushing and doing work to drive the tightening and loosening gear 3 to rotate and reset when sliding back, resulting in the failure of the tightening and loosening function;

[0063] The direction of the positioning frame 6 can be rotated and switched through the rotating shaft 604 to change the driving rotation direction of the dial plate 601 on the tightening and loosening gear 3, so as to realize the switching use of the tightening and loosening operation of the nut 102. Moreover, the two positioning sockets 401 can insert and position the positioning frame 6 and the dial plate 601 in the used state after rotation adjustment;

[0064] The slider 5 can slide left and right along the track bar 201 to select the positions corresponding to the four connectors 101 at the bottom to tighten and loosen and disassemble the nuts 102 on the four connectors 101. Furthermore, through one slider 5 and the driving mechanism thereon, the tightening and loosening of the nut 102 can be completed, saving the need to separately match one slider 5 and the driving mechanism for each of the four nuts 102 at the bottom, simplifying the device structure, facilitating the weight reduction of the device and reducing the cost. Moreover, the vertical support rod 503 can insert and position the slider 5 at the used position after sliding adjustment.

[0065] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An internal gas shunt distributor for a hydrogen energy vehicle, characterized in that: An internal gas branch distributor for a hydrogen energy vehicle, comprising a distributor body (1); the distributor body (1) is in the form of a long rectangular structure, with a locking sleeve having an installation clamp (2); the distributor body (1) comprises Joints (101), two joints (101) are symmetrically locked and installed at the left and right ends of the distributor body (1), and a joint (101) is also locked and installed at the middle of the top of the distributor body (1), and four joints (101) are welded at equal intervals at the bottom of the distributor body (1); A nut (102), the nut (102) being threadedly connected to the head end of the connector (101); Mounting clamps (2) include A track bar (201) is welded to a cross-bracing connecting rod on the front side of the mounting clamp (2), an L-shaped slider (5) is slidably mounted on the track bar (201), a driving track (4) is slidably mounted on the slider (5), and a rectangular positioning frame (6) is rotatably connected to the bottom of the front end of the driving track (4); The positioning rings (202) are welded to the bottom of the mounting fixture (2) at four equidistant intervals, and a tensioning gear (3) is rotatably mounted below the bottom of each of the four positioning rings (202).

2. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, characterized in that: The mounting clamp (2) is composed of four L-shaped clamping plates at the front and rear and four positioning rings (202) at the bottom that are welded together, wherein the four positioning rings (202) are welded and fixed together by two cross bracing connecting rods at the front and rear.

3. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, characterized in that: The mounting clamp (2) further comprises a limiting rod (203), three limiting rods (203) are welded around the bottom of the positioning ring (202) at four locations, and two semicircular limiting plates are welded at intervals on the bottom section of the limiting rod (203).

4. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 3, characterized in that: The tensioning gear (3) is rotatably matched with the three groups of semicircular limiting plates on the bottom sections of the three limiting rods (203), and the four nuts (102) at the bottom pass through the four tensioning gears (3).

5. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, wherein: The slider (5) comprises Track shafts (504), two track shafts (504) are symmetrically welded to the upper and lower sides of the slider (5), and the driving track (4) is sleeved and matched with the two track shafts (504); A vertical support rod (503), the vertical support rod (503) is inserted into the protruding plate at the right end of the slider (5) by being pushed through by a spring, and the vertical support rod (503) is selectively plugged into and matched with four equidistantly spaced plug holes on the track bar (201); A driving mechanism is rotatably mounted on the cross bracing section of the slider (5).

6. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 5, characterized in that: The driving mechanism comprises A driving gear (501), the driving gear (501) is rotatably mounted on the left end of the cross brace section of the slider (5), and a cross nut is welded to the head end of the rotating shaft of the driving gear (501); The driven gear (502) is rotatably mounted at the middle position of the cross-bracing section of the slider (5), and the driven gear (502) is in meshing contact with the driving gear (501).

7. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 6, characterized in that: A lever is welded to the outer circumference of the driven gear (502), and the lever is plugged into and matched with the inner sliding groove of the driving track (4).

8. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, characterized in that: The positioning frame (6) comprises The shifting plate (601) is slidably mounted through the bottom plate of the positioning frame (6), and the bottom section of the shifting plate (601) has an inclined cross-section structure, and the lower part of this inclined cross-section section is inserted corresponding to the top insertion fit with the tightening and loosening gear (3); The vertical support sliding shaft (602), a convex block is welded at the top end of the shifting plate (601), a vertical support sliding shaft (602) is welded at the top end of this convex block, and a lifting knob is welded and fixed at the topmost end of the vertical support sliding shaft (602).

9. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, characterized in that: The positioning frame (6) further includes The positioning insertion rod (603), two positioning insertion rods (603) are symmetrically welded on the top section of the vertical support sliding shaft (602), and the lower part of it slides and abuts against the top end of the rotating shaft (604); The rotating shaft (604), the rotating shaft (604) is welded and fixed to the top of the positioning frame (6), and the rotating shaft (604) is rotationally inserted and matched with the head end of the driving track (4), and the vertical support sliding shaft (602) extends upward through the rotating shaft (604).

10. The internal gas shunt distributor for a hydrogen energy vehicle according to claim 1, characterized in that: The driving track (4) includes positioning insertion sleeves (401), two positioning insertion sleeves (401) are symmetrically welded on the front section of the driving track (4), and two positioning insertion rods (603) are inserted and matched with the two positioning insertion sleeves (401) correspondingly.

Images