Automobile protection plate

Abstract

The invention discloses an automobile protection plate which comprises a water tank protection plate, one end of the water tank protection plate is connected with an engine protection plate, the other end of the engine protection plate is connected with a transmission protection plate, the other end of the transmission protection plate is connected with a three-way catalytic system protection plate, a supporting cross beam is arranged above the other end of a three-way catalytic system, and a bow-shaped support is arranged above one end of the transmission protection plate. The invention has the beneficial effects that the V-shaped structure is adopted, so that the resistance to vertical impact force from the ground is enhanced; the reasonable vent hole design enables cooling and heat dissipation to be more timely; the noise of the power system is reduced through the advanced silencing hole design; a built-in screw fastening structure is adopted, so that the possibility that a fastening screw scrapes the ground is avoided; the three-way catalytic system is properly protected by an original three-dimensional frame structure; through reasonable collapse point design, the impact force on the front side is ingeniously dispersed and reduced, and in addition, through the staggered holes, the square convex ribs, the frame-shaped structure and the arch-shaped prestress design, not only is the beautiful design aesthetic feeling achieved, but also the protection performance is excellent.

Description

Technical Field

[0001] The invention relates to the technical field related to automobile protection technology, in particular to an automobile guard plate. Background Art

[0002] Automobile guard plates refer to components installed at the front lower part and bottom of the automobile to provide protection for the automobile engine and chassis when they are hit by external forces. At present, most of the commonly used guard plates in China are plastic products, which cannot provide protection for the engine and chassis. Even if a few guard plates are made of steel plates, the protection effect is very limited due to unreasonable design and rough manufacturing process. Sometimes, poor protection even leads to car crashes and deaths during off-road driving. With the increasing consumption of automobiles in China, automobiles are not just simple means of transportation. Driving through jungles, river beaches, desert uninhabited areas and participating in car rallies have quietly emerged. The existing engine chassis guard plates on the market can no longer meet the protection needs. Summary of the invention

[0003] In view of the shortcomings of the prior art such as the guard plate structure is not firm enough, the connection is not reliable enough, the force design is unreasonable, the cooling and heat dissipation is not good, and the protection effect is low, the present invention adopts the following technical solutions: A car guard plate includes a radiator guard plate, one end of the radiator guard plate is connected to an engine guard plate, the other end of the engine guard plate is connected to a transmission guard plate, the other end of the transmission guard plate is connected to a three-way catalytic system guard plate, a supporting beam is provided above the other end of the three-way catalytic system guard plate, and a bow-shaped bracket is provided above one end of the transmission guard plate.

[0004] Furthermore, the water tank guard plate is bent into a V-shape by a whole steel plate, and the bending angle is set according to actual needs. A Z-shaped reinforcement rib is provided at one end of the water tank guard plate, and a circular hole is provided on the Z-shaped reinforcement rib. A U-shaped reinforcement beam is provided on the other end of the water tank guard plate, and the U-shaped reinforcement beam is parallel to the V-shaped bending line of the water tank guard plate and is welded to the upper surface of the water tank guard plate. Five built-in bolt mounting holes are provided on the U-shaped reinforcement beam, and three square convex ribs are provided on the plane connected to both sides of the V-shaped bending line of the water tank guard plate at the corresponding position of the water tank guard plate. A runway-shaped ventilation hole is opened on the water tank guard plate between the square convex rib and the Z-shaped reinforcement rib, and a circular hole is provided in the square convex rib. Side reinforcement ribs and folded reinforcement ribs are provided in sequence on the V-shaped bending surface of one end of the water tank guard plate with the Z-shaped reinforcement rib, and a notch is provided at the intersection of the side reinforcement rib and the Z-shaped reinforcement rib.

[0005] Furthermore, the engine guard plate includes a plate body, a U-shaped beam, and a connecting plate. The plate body is bent into a V-shape by a whole steel plate, and the bending angle is set according to actual needs. The U-shaped beam is provided at one end of the plate body. The U-shaped beam and the V-shaped bending line of the plate body are parallel and are formed by bending the plate body through the same steel plate. The U-shaped arm on one side of the U-shaped beam is connected to the connecting plate by welding. Three fixing holes are provided on the connecting plate. Two square ribs are provided on the bending plane of the plate body, and a number of ventilation circular holes are provided on the bending surfaces on both sides of the plate body.

[0006] Furthermore, the transmission guard plate and the three-way catalytic system guard plate are formed by bending a whole steel plate into an "concave" shape, the transmission guard plate and the three-way catalytic system guard plate are the two sides of the bent steel plate, and two G-shaped steel beams bent in the same way as the steel plate are arranged on both sides of the transmission guard plate and the three-way catalytic system guard plate, and 7 transverse waist-shaped holes are respectively opened on both sides of the transmission guard plate and the three-way catalytic system guard plate and on the G-shaped steel beams, a No. 1 U-shaped crossbeam and a fixed crossbeam are respectively welded to the front end of the transmission guard plate and the rear end of the three-way catalytic system guard plate, and the transmission guard plate, the three-way catalytic system guard plate, the fixed crossbeam and the No. 1 U-shaped crossbeam are combined and welded to form a rectangular frame structure The structure is characterized in that a plurality of inverted circular holes are evenly arranged in the middle of the transmission guard plate, two transverse ribs are transversely arranged at one end of the three-way catalytic system guard plate, and a longitudinal rib is longitudinally arranged at the other end of the three-way catalytic system guard plate near the bending line, and a plurality of inverted circular holes are arranged between the transverse ribs and the longitudinal ribs, a circular hole is arranged on each of the transverse ribs, two waist-shaped holes are arranged at both ends of the longitudinal ribs, a square hole is arranged between the two waist-shaped holes on the longitudinal ribs, waist-shaped holes are evenly arranged on the No. 1 U-shaped crossbeam, and a built-in bolt mounting hole is arranged on the transmission guard plate at the position corresponding to the waist-shaped hole on the No. 1 U-shaped crossbeam.

[0007] Furthermore, the supporting crossbeam comprises a No. 2 U-shaped steel crossbeam, a U-shaped reinforcement plate, a mounting plate and a nut. The No. 2 U-shaped steel beam is of arched design. The direction of the No. 2 U-shaped steel beam is arranged relative to the No. 1 U-shaped crossbeam. Fixing holes are provided at positions corresponding to the waist-shaped holes on the No. 1 U-shaped crossbeam and the No. 2 U-shaped steel beam. The mounting plates are provided at both ends of the No. 2 U-shaped steel beam. The mounting plates are provided with waist-shaped hanging holes. U-shaped reinforcement plates are provided at positions between the mounting plates and the nuts in the U-shaped groove of the No. 2 U-shaped steel beam. The No. 2 U-shaped steel crossbeam and the U-shaped reinforcement plate are welded in a box shape. The mounting plate is welded to the end of the No. 2 U-shaped steel beam, and the nut is welded to the fixing hole on the No. 2 U-shaped steel beam.

[0008] Furthermore, the bow-shaped bracket includes a bow-shaped plate and a nut. The bow-shaped bracket is arranged on the longitudinal convex rib. The bow arms on both sides of the bow-shaped bracket are provided with circular holes corresponding to the waist-shaped holes on the longitudinal convex rib. The nut is welded to the circular holes on the bow arms on both sides of the bow-shaped bracket.

[0009] Furthermore, the water tank guard plate and the engine guard plate, the engine guard plate and the transmission guard plate, the ternary transmission system guard plate and the supporting beam, and the bow-shaped bracket and the ternary transmission system guard plate are all connected by built-in bolts.

[0010] Furthermore, the fixed crossbeam is a U-shaped structure, and three circular holes are arranged in the U-shaped groove of the fixed crossbeam. Nuts are welded on the circular holes arranged on the fixed crossbeam for internal bolt connection.

[0011] Furthermore, the circular hole provided on the fixed crossbeam corresponds to the fixing hole on the connecting plate, so as to facilitate the fixation between the fixed crossbeam and the connecting plate.

[0012] The beneficial effects of the present invention are as follows: in view of the defects of the existing guard plate structure that is not firm enough, the connection is not reliable enough, the force design is unreasonable, the cooling and heat dissipation is poor, and the protective effect is low, the present invention provides an engine chassis guard plate that is both light and reliable in protection and has better safety. Compared with ordinary guard plates, the present invention has six outstanding advantages: First, it adopts a V-shaped structure to enhance the resistance to vertical impact force from the ground. Second, the reasonable ventilation hole design makes cooling and heat dissipation more timely. Third, the advanced silencer hole design reduces the noise of the power system. Fourth, the built-in screw fastening structure eliminates the possibility of scratches between the fastening screws and the ground. Fifth, the original three-dimensional frame structure properly protects the three-way catalytic system. Sixth, the reasonable collapse point design allows the frontal impact force to be cleverly dispersed and reduced. Not only that, the present invention not only has a beautiful design aesthetic, but also has excellent protective performance through the staggered holes, square convex ribs, frame structure and bow-shaped prestressed design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A structural diagram; Figure 3 It is a schematic diagram of the transmission guard structure of the present invention; Figure 4 It is a schematic diagram of the front structure of the water tank guard plate and the engine guard plate of the present invention; In the figure: 1-water tank guard plate, 10-Z-shaped reinforcement rib, 11-U-shaped reinforcement beam, 12-folded reinforcement rib, 13-ventilation hole, 14-side reinforcement rib, 15-notch, 2-engine guard plate, 20-plate body, 21-U-shaped beam, 22-connecting plate, 3-transmission guard plate, 30-three-way catalytic system guard plate, 301-transverse convex rib, 302-longitudinal convex rib, 31-G-shaped steel beam, 32-transverse waist hole, 33-fixed beam, 34-No. 1 U-shaped beam, 4-support beam, 41-No. 2 U-shaped steel beam, 42-U-shaped reinforcement plate, 43-mounting plate, 44-nut, 5-bow bracket. DETAILED DESCRIPTION

[0014] The following will be combined with the embodiments of the present invention and the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Combined with Figures 1 to 4 Shown: A car guard plate includes a water tank guard plate 1, one end of the water tank guard plate 1 is connected to an engine guard plate 2, the other end of the engine guard plate 2 is connected to a transmission guard plate 3, the other end of the transmission guard plate 3 is connected to a three-way catalytic system guard plate 30, a supporting beam 4 is provided above the other end of the three-way catalytic system guard plate 30, a bow-shaped bracket 5 is provided above one end of the transmission guard plate 3, the water tank guard plate 1 and the engine guard plate 2, the engine guard plate 2 and the transmission guard plate 3, the three-way transmission system guard plate 31 and the supporting beam 4, the bow-shaped bracket 5 and the three-way transmission system guard plate 31 are all connected by built-in bolts, and the built-in screw fastening structure eliminates the possibility of fastening screws and scratches on the ground.

[0016] The water tank guard plate 1 is bent into a V-shape by a whole steel plate, and a Z-shaped reinforcement rib 10 is provided at one end of the water tank guard plate 1, and a circular hole is provided on the Z-shaped reinforcement rib 10, and a U-shaped reinforcement beam 11 is provided at the other end of the water tank guard plate 1. The U-shaped reinforcement beam 11 is parallel to the V-shaped bending line of the water tank guard plate 1 and is welded to the upper surface of the water tank guard plate 1, and five built-in bolt mounting holes are provided on the U-shaped reinforcement beam 11, and three square convex ribs are provided on the plane connected to both sides of the V-shaped bending line of the water tank guard plate 1 at the corresponding position of the water tank guard plate 1, and 12 runway-type ventilation holes 13 are opened on the water tank guard plate 1 between the square convex ribs and the Z-shaped reinforcement ribs 10, and a circular hole is provided in each of the square convex ribs, and the V-shaped bending surface of one end of the water tank guard plate 1 with the Z-shaped reinforcement rib 10 is provided with side reinforcement ribs 14 and folded reinforcement ribs 12 in sequence, and a notch 15 is provided at the intersection of the side reinforcement rib 14 and the Z-shaped reinforcement rib 10.

[0017] The engine guard plate 2 includes a plate body 20, a U-shaped beam 21, and a connecting plate 22. The plate body 20 is bent into a V-shape by a whole steel plate. A U-shaped beam 21 is provided at one end of the plate body 20. The V-shaped bending lines of the U-shaped beam 21 and the plate body 20 are parallel and are formed by bending the same steel plate as the plate body 20. A U-shaped arm on one side of the U-shaped beam 21 is connected to the connecting plate 22 by welding. Three fixing holes are provided on the connecting plate 22. Two square convex ribs are provided on the bending plane of the plate body 20, and a number of ventilation circular holes are provided on the bending surfaces on both sides of the plate body 20.

[0018] The transmission guard plate 3 and the three-way catalytic system guard plate 30 are formed by bending a whole steel plate into an "concave" shape. The transmission guard plate 3 and the three-way catalytic system guard plate 30 are two sides of the bent steel plate. Two G-shaped steel beams 31 bent in the same way as the steel plate are arranged on both sides of the transmission guard plate 3 and the three-way catalytic system guard plate 30. Seven transverse waist-shaped holes 32 are respectively opened on both sides of the transmission guard plate 3 and the three-way catalytic system guard plate 30 and on the G-shaped steel beams 31. A fixed crossbeam 33 is welded on the head end of the transmission guard plate 3 and the tail end of the three-way catalytic system guard plate 30 respectively. The fixed crossbeam 33 is a U-shaped structure. Three circular holes are arranged in the U-shaped groove of the fixed crossbeam 33. The circular holes arranged on the fixed crossbeam 33 correspond to the fixed holes on the connecting plate 22, and nuts 44 are welded on the circular holes arranged on the fixed crossbeam 33.

[0019] The transmission guard plate 3, the three-way catalytic system guard plate 30, the fixed crossbeam 33 and the No. 1 U-shaped crossbeam 34 are welded together to form a rectangular frame structure. Three waist-shaped holes are evenly arranged on the No. 1 U-shaped crossbeam 34. Three built-in bolt mounting holes are arranged on the transmission guard plate 3 at the corresponding positions of the waist-shaped holes on the No. 1 U-shaped crossbeam 34, and are fixedly connected with the fixed crossbeam 33 through built-in bolts.

[0020] A number of inverted circular holes are evenly arranged in the middle of the transmission guard plate 3, two transverse ribs 301 are transversely arranged at one end of the three-way catalytic system guard plate 30, and a longitudinal rib 302 is longitudinally arranged at the other end of the three-way catalytic system guard plate 30 near the bending line, and a number of inverted circular holes are arranged between the transverse ribs 301 and the longitudinal ribs 302, and a circular hole is arranged on each of the transverse ribs 301, two waist-shaped holes are arranged at both ends of the longitudinal ribs 302, and a square hole is arranged between the two waist-shaped holes on the longitudinal ribs 302, and a bow-shaped bracket 5 is arranged on the longitudinal ribs 302, and circular holes corresponding to the waist-shaped holes on the longitudinal ribs 302 are arranged on the bow arms on both sides of the bow-shaped bracket 5, and two waist-shaped holes are arranged at both ends of the upper side of the bow-shaped bracket 5, and nuts 44 are welded to the circular holes on the bow arms on both sides of the bow-shaped bracket 5, which are used for the bolted built-in connection between the bow-shaped bracket 5 and the three-way catalytic system guard plate 30.

[0021] The supporting crossbeam 4 includes a second U-shaped steel crossbeam 41, a U-shaped reinforcement plate 42, a mounting plate 43 and a nut 44. The second U-shaped steel beam 41 is designed in an arch shape. The second U-shaped steel beam 41 is arranged relative to the first U-shaped crossbeam 34. The second U-shaped steel beam 41 and the first U-shaped crossbeam 34 have fixing holes at positions corresponding to the waist holes. Both ends of the second U-shaped steel beam 41 are provided with mounting plates 42. The mounting plates 42 are provided with three waist-shaped hanging holes for fixing the guard plate to the car. Fixed connection, a U-shaped reinforcement plate 42 is provided in the U-shaped groove of the No. 2 U-shaped steel beam 41 between the mounting plate and the nut, the No. 2 U-shaped steel beam 41 and the U-shaped reinforcement plate 42 are welded in a box shape, which can effectively enhance the protective strength of the guard plate, the mounting plate 43 is welded to the end of the No. 2 U-shaped steel beam 41, and the nut 44 is welded to the fixing hole on the No. 2 U-shaped steel beam 41, which is used for the bolted internal connection between the No. 2 U-shaped steel beam 41 and the No. 1 U-shaped crossbeam 34 and the transmission guard plate 3.

[0022] Working principle: the water tank guard plate and the engine guard plate, the engine guard plate and the transmission guard plate, the three-way transmission system guard plate and the supporting crossbeam, the bow-shaped bracket and the three-way transmission system guard plate are connected in sequence by built-in bolts. The built-in screw fastening structure eliminates the possibility of the fastening screws and the ground scratching; the water tank guard plate and the engine guard plate adopt a V-shaped structure, which can effectively enhance the resistance to the vertical impact force from the ground. The reasonable ventilation hole design on the guard plate enables the guard plate to be cooled and dissipated in time. The holes such as ventilation holes are set on the guard plate, which can play a certain role in silencing. The design of the silencing hole reduces the noise of the power system. The transmission guard plate and the three-way catalytic system guard plate and the fixed crossbeam and the No. 1 U-shaped crossbeam are welded into a rectangular frame structure, so that the three-way catalytic system is properly protected. The structural design of the present invention is reasonable, which can cleverly disperse and reduce the impact force of the front. In addition, the present invention not only has a beautiful design aesthetics through the dislocated holes, square convex ribs, frame structure and bow-shaped prestressed design, but also enhances the protective performance of the guard plate.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automobile guard plate, characterized in that: The invention comprises a water tank guard plate (1), wherein one end of the water tank guard plate (1) is connected to an engine guard plate (2), the other end of the engine guard plate (2) is connected to a transmission guard plate (3), the other end of the transmission guard plate (3) is connected to a three-way catalytic system guard plate (30), a supporting crossbeam (4) is provided above the other end of the three-way catalytic system guard plate (30), and a bow-shaped bracket (5) is provided above one end of the transmission guard plate (3).

2. The automobile guard plate according to claim 1, characterized in that: The water tank guard plate (1) is formed by bending a whole steel plate into a V-shape. A Z-shaped reinforcing rib (10) is provided at one end of the water tank guard plate (1). A circular hole is provided on the Z-shaped reinforcing rib (10). A U-shaped reinforcing crossbeam (11) is provided at the other end of the water tank guard plate (1). The U-shaped reinforcing crossbeam (11) is parallel to the V-shaped bending line of the water tank guard plate (1) and is welded to the upper surface of the water tank guard plate (1). The U-shaped reinforcing crossbeam (11) is provided with five built-in bolt mounting holes corresponding to the positions of the water tank guard plate (1). Three square convex ribs are arranged on the planes connected on both sides of the V-shaped bending line of the water tank guard plate (1); 12 runway-shaped ventilation holes (13) are opened on the water tank guard plate (1) between the square convex ribs and the Z-shaped reinforcing ribs (10); a circular hole is arranged in each of the square convex ribs; a side reinforcing rib (14) and a folded reinforcing rib (12) are arranged in sequence on the V-shaped bending surface at one end of the water tank guard plate (1) where the Z-shaped reinforcing rib (10) is arranged; a notch (15) is arranged at the intersection of the side reinforcing rib (14) and the Z-shaped reinforcing rib (10).

3. The automobile guard plate according to claim 1, characterized in that: The engine guard plate (2) comprises a plate body (20), a U-shaped crossbeam (21), and a connecting plate (22); the plate body (20) is bent into a V-shape from a whole steel plate; one end of the plate body (20) is provided with the U-shaped crossbeam (21); the V-shaped bending lines of the U-shaped crossbeam (21) and the plate body (20) are parallel and are formed by bending the same steel plate as the plate body (20); a U-shaped arm on one side of the U-shaped crossbeam (21) is connected to the connecting plate (22) by welding; three fixing holes are provided on the connecting plate (22); two square convex ribs are provided on the bending plane of the plate body (20); and a plurality of circular ventilation holes are provided on the bending surfaces on both sides of the plate body (20).

4. The automobile guard plate according to claim 1, characterized in that: The transmission guard plate (3) and the three-way catalytic system guard plate (30) are formed by bending a whole steel plate into a "concave" shape. The transmission guard plate (3) and the three-way catalytic system guard plate (30) are two sides of the steel plate. Two G-shaped steel beams (31) bent in the same manner as the steel plate are provided on both sides of the transmission guard plate (3) and the three-way catalytic system guard plate (30). Seven transverse waist-shaped holes (32) are respectively provided on both sides of the transmission guard plate (3) and the three-way catalytic system guard plate (30) and on the G-shaped steel beam (31). A No. 1 U-shaped crossbeam (34) and a fixed crossbeam (33) are respectively welded to the front end of the transmission guard plate (3) and the rear end of the three-way catalytic system guard plate (30). The transmission guard plate (3), the three-way catalytic system guard plate (30), the fixed crossbeam (33) and the No. 1 U-shaped crossbeam (34) are combined and welded into a rectangular parallelepiped. A frame-type structure, wherein a plurality of inverted circular holes are evenly arranged at the middle of the transmission guard plate (3), two transverse convex ribs (301) are transversely arranged at one end of the three-way catalytic system guard plate (30), a longitudinal convex rib (302) is longitudinally arranged at the other end of the three-way catalytic system guard plate (30) adjacent to the bending line, a plurality of inverted circular holes are arranged between the transverse convex rib (301) and the longitudinal convex rib (302), a circular hole is arranged on each of the transverse convex ribs (301), two waist-shaped holes are arranged at both ends of the longitudinal convex rib (302), a square hole is arranged between the two waist-shaped holes on the longitudinal convex rib (302), three waist-shaped holes are evenly arranged on the first U-shaped cross beam (34), and three built-in bolt mounting holes are arranged on the transmission guard plate (3) at positions corresponding to the waist-shaped holes on the first U-shaped cross beam (34).

5. The automobile guard plate according to claim 1, characterized in that: The supporting crossbeam (4) comprises a second U-shaped steel crossbeam (41), a U-shaped reinforcing plate (42), a mounting plate (43) and a nut (44); the second U-shaped steel beam (41) is of arched design; the second U-shaped steel beam (41) is arranged in a direction relative to the first U-shaped crossbeam (34); fixing holes are arranged at positions corresponding to waist-shaped holes on the second U-shaped steel beam (41) and the first U-shaped crossbeam (34); the mounting plates (42) are arranged at both ends of the second U-shaped steel beam (41); the mounting plates (42) are arranged with three waist-shaped hanging holes; the U-shaped groove of the second U-shaped steel beam (41) is provided with a U-shaped reinforcing plate (42) at a position between the mounting plate and the nut; the second U The steel cross beam (41) and the U-shaped reinforcement plate (42) are welded in a box shape, the mounting plate (43) is welded to the end of the second U-shaped steel beam (41), and the nut 44 is welded to the fixing hole on the second U-shaped steel beam (41).

6. The automobile guard plate according to claim 5, characterized in that: The bow-shaped bracket (5) comprises a bow-shaped plate (51) and a nut (44); the bow-shaped bracket (5) is arranged on the longitudinal convex rib (302); circular holes corresponding to the waist-shaped holes on the longitudinal convex rib (302) are arranged on the bow arms on both sides of the bow-shaped bracket (5); and the nut (44) is welded to the circular holes on the bow arms on both sides of the bow-shaped bracket (5).

7. The automobile guard plate according to claim 1, characterized in that: The water tank guard plate (1) and the engine guard plate (2), the engine guard plate (2) and the transmission guard plate (3), the ternary transmission system guard plate (31) and the supporting crossbeam (4), and the bow-shaped bracket (5) and the ternary transmission system guard plate (31) are all connected by internally concealed bolts.

8. The automobile guard plate according to claim 1, characterized in that: The fixed crossbeam (3) is a U-shaped structure, and three circular holes are arranged in the U-shaped groove of the fixed crossbeam (33). Nuts (44) are welded to the circular holes arranged on the fixed crossbeam (33).

9. The automobile guard plate according to claim 1, characterized in that: The circular hole provided on the fixed crossbeam (33) corresponds to the fixing hole on the connecting plate (22).

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