A monocoque truck frame and method of welding the same

Abstract

The application discloses a whole-welded frame of a load-carrying truck and a welding method thereof, and relates to the technical field of frame welding. The whole-welded frame of the load-carrying truck comprises a frame body, a front anti-collision assembly is arranged at one end of the frame body, a rear anti-collision assembly is arranged at the other end of the frame body, and a reinforcing assembly is arranged on the inner side of the frame body. The whole-welded frame of the load-carrying truck is characterized in that: the inner support strip plates and the inner support station plates are staggered and arranged on the inner side of the truck body girders, two groups of truck body girders are symmetrically arranged, the inner channel steel is embedded into the inner side between the two truck body girders and is welded and combined to form an integral frame, the diamond-shaped frame is pushed into the truck body girders, one side of the diamond-shaped frame is embedded into the inner side of the inner channel steel and is welded, and the other two sides are welded on the inner support strip plates and the inner support station plates on the inner side of the truck body girders, so that the supporting strength is improved, and the slot-shaped plates are distributed at multiple positions on the outer side of the truck body girders to form a stable frame.

Description

Technical Field

[0001] This invention relates to the field of chassis welding technology, specifically to a monolithic welded chassis for a load-bearing truck and its welding method. Background Technology

[0002] In chassis design, a closed cavity is typically used to provide sufficient strength and rigidity. Currently, equipment faces the challenge of becoming larger and lighter. The challenge lies in how to withstand greater loads within the same cavity cross-section, or how to reduce the weight of structural components under the same load. Common practices include: 1. Using higher-grade steel to reduce structural weight. 2. Reinforcing structural components at areas of high local stress with plates to reduce stress values. A more ideal design approach is to divide a single cavity into multiple smaller cavities, which effectively increases load-bearing capacity and reduces structural component weight.

[0003] In existing technologies, such as the Chinese patent CN113263278A entitled "A Frame Welding Method and Frame," the following steps are included: welding a base plate, an inner ring upright plate, and a middle stiffening plate to form a first welding assembly; welding a cover plate to the first welding assembly to form a second welding assembly; welding the outer upright plates one by one to the second welding assembly to form a third welding assembly; and welding the outer sealing plate to the third welding assembly to form a multi-cavity welded frame; wherein the middle stiffening plate consists of multiple transverse stiffening ribs and multiple longitudinal stiffening ribs. This method solves the problems of the original welding method, where personnel are in a confined space, making movement difficult, and the toxic and harmful gases produced during welding cannot dissipate, easily leading to risks of poisoning and suffocation. Furthermore, the limited welding space and insufficient lighting make it difficult to control welding quality.

[0004] However, in the existing technology, the existing truck frames are relatively simple in welding methods and have insufficient structural design, resulting in insufficient stability of the frame after welding. Welds are prone to detachment, causing the frame to become loose and affecting normal safe use.

[0005] Therefore, we propose a monolithic welded frame for load-bearing trucks and its welding method to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a load-bearing truck integral welded frame and its welding method, so as to solve the problem that the truck frame mentioned in the background art is not stable enough after welding due to the simple welding method and insufficient structural design, and the weld joints are prone to detachment, resulting in a loose frame that affects normal and safe use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a load-bearing truck integral welded frame, including a frame body, a front anti-collision component installed at one end of the frame body, a rear anti-collision component installed at the other end of the frame body, a reinforcing component provided on the inner side of the frame body, the frame body being a main frame, the front anti-collision component being installed at the front to provide frontal buffering and anti-collision, and the rear anti-collision component providing rear protection and anti-collision, the reinforcing component being able to further improve strength; The frame body has main beams on both sides, and a diamond frame is welded between the two main beams. Multiple inner channel steels are provided on the inner side of the two main beams. One side of the diamond frame is welded to the inner side of the inner channel steel. Multiple channel plates are evenly distributed on the outer side of the frame body. The diamond frame is pushed between the main beams, and one side of the diamond frame is embedded into the inner side of the inner channel steel and welded. The channel plates are distributed in multiple positions on the outer side of the main beams to form a stable frame.

[0008] Preferably, a front buffer plate is installed on one side of the front anti-collision assembly, and first buffer springs are distributed at both ends of one side of the front buffer plate. One end of the first buffer spring is connected to a straight energy-absorbing box, and the other end of the square tube is welded to a straight energy-absorbing box. The side of the straight energy-absorbing box is connected to the front buffer plate through multiple symmetrically distributed first buffer springs, which can form a buffer and can be disassembled or replaced later.

[0009] Preferably, a rear buffer plate is installed on one side of the rear anti-collision assembly, and second buffer springs are distributed at both ends of one side of the rear buffer plate. An arc-shaped energy-absorbing box is installed at one end of the second buffer springs, and second buffer springs are symmetrically distributed on the outside of the arc-shaped energy-absorbing box and connected to the rear buffer plate, thereby realizing rear anti-collision buffering.

[0010] Preferably, an inner support strip is provided on the inner side of the vehicle body beam, and multiple inner support plates are evenly distributed on the outer side of the inner support strip. The inner support plates are evenly installed on the inner side of the vehicle body beam. The inner support strip and inner support plates are staggered and welded on the inner side of the vehicle body beam, so that the two sets of vehicle body beams are symmetrically distributed, thereby ensuring the inner support strength of the vehicle body beam and preventing breakage.

[0011] Preferably, a connecting square tube is welded to both ends of one side of the straight energy-absorbing box, a connecting sleeve is inserted into one end of the connecting square tube, and an arc-shaped frame is connected to one end of the connecting sleeve. The arc-shaped frame and the positioning plate are both welded to one end of the vehicle body beam, and connecting sleeves are symmetrically welded to the side of the arc-shaped frame to provide connection space for the connecting square tube.

[0012] Preferably, connecting rods are welded to both ends of one side of the arc-shaped energy-absorbing box, and a high-strength protective plate is welded to one end of the connecting rod. The two ends of the high-strength protective plate are connected to the other ends of the two vehicle body beams. The high-strength protective plate is welded to the other end of the vehicle body beam. The connecting rod is inserted into the inside of the high-strength protective plate and the arc-shaped energy-absorbing box is welded to it, which can provide a collision buffer function and improve safety.

[0013] Preferably, the inner channel steel is welded to both ends with fixing plates, and one side of the fixing plate is connected to the inner side of the vehicle body beam. The fixing plate facilitates a more stable connection between the inner channel steel and the vehicle body beam, thereby improving stability.

[0014] Preferably, positioning plates are symmetrically installed on the sides of the arc-shaped frame, and the two ends of the positioning plates are welded to one end of the vehicle body beam. The positioning plates help to improve the stability of the arc-shaped frame after welding and ensure a stable protective function.

[0015] Preferably, multiple side mounting plates are evenly distributed on the sides of the vehicle body beam, and multiple bottom mounting seats are evenly distributed on the bottom of the vehicle body beam. Multiple side mounting seats are installed on the sides of the vehicle body beam. The side mounting plates and side mounting seats can provide the function of installing external components, and the bottom mounting seats can provide the function of bottom support connection.

[0016] A welding method for a monolithic welded frame of a load-bearing truck includes the following steps: S1. First, inner support strips and inner support plates are welded alternately on the inner side of the car body beams. The two sets of car body beams are symmetrically distributed. Then, the inner channel steel is embedded between the two car body beams and welded together to form an overall frame.

[0017] S2. Then, push the diamond frame between the main beams of the car body, and simultaneously weld one side of the diamond frame into the inner side of the inner channel steel. The other two sides are welded to the inner support strips and inner support plates on the inner side of the main beam of the car body, thereby improving the support strength.

[0018] S3. Then, channel plates are distributed at multiple locations on the outside of the vehicle body beam to form a stable frame.

[0019] S4. After the frame is stabilized, the arc-shaped frame and the positioning plate can be welded to one end of the vehicle body beam, and the connecting sleeves can be symmetrically welded to the side of the arc-shaped frame to provide connection space for the connecting square tube.

[0020] S5, where a straight energy-absorbing box is welded to one end of the connecting square tube, and the side of the straight energy-absorbing box is connected to a front buffer plate through multiple symmetrically distributed first buffer springs, which can form a buffer, and the sheet metal can be disassembled or replaced later.

[0021] S6. At the same time, a high-strength protective plate is welded to the other end of the vehicle body beam. A connecting rod is inserted into the inside of the high-strength protective plate and an arc-shaped energy-absorbing box is welded on it. A second buffer spring is symmetrically distributed on the outside of the arc-shaped energy-absorbing box and connected to the rear buffer plate, thereby achieving rear anti-collision buffering.

[0022] S7. After the main components are welded, the side mounting plates and side mounting brackets can be welded to the side of the vehicle body beam with matching bolts, while the bottom mounting bracket is welded to the bottom of the vehicle body beam to provide external mounting support.

[0023] Compared with the prior art, the beneficial effects of the present invention are: 1. By welding inner support plates and inner support plates in an alternating pattern to the inner side of the vehicle body beams, two sets of vehicle body beams are symmetrically distributed. Then, inner channel steel is embedded between the two vehicle body beams and welded together to form an integral frame. A diamond frame is pushed between the vehicle body beams, and one side of the diamond frame is embedded into the inner side of the inner channel steel and welded. The other two sides are welded to the inner support plates and inner support plates on the inner side of the vehicle body beams, thereby improving the support strength. Channel plates are distributed in multiple positions on the outer side of the vehicle body beams to form a stable frame, ensuring the stable use of the frame. At the same time, the design of channel lightweight steel helps to reduce weight while ensuring stability, improving the vehicle's flexibility and fuel economy. 2. By welding the arc-shaped frame and positioning plate to one end of the vehicle body beam, and symmetrically welding connecting sleeves to the side of the arc-shaped frame to provide connection space for the connecting square tube, a straight energy-absorbing box is welded to one end of the connecting square tube, and the side of the straight energy-absorbing box is connected to the front buffer plate through multiple symmetrically distributed first buffer springs, which can form a buffer. The sheet metal can be disassembled or replaced later. The high-strength protective plate is welded to the other end of the vehicle body beam, and the connecting rod is inserted into the inside of the high-strength protective plate and welded with an arc-shaped energy-absorbing box. The second buffer springs are symmetrically distributed on the outside of the arc-shaped energy-absorbing box and connected to the rear buffer plate, thereby realizing rear anti-collision buffering. This further improves safety based on the frame, which helps to reduce the injury of people inside and outside the vehicle in the event of a collision, while reducing maintenance costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a load-bearing truck integral welded frame according to the present invention; Figure 2 This is a schematic diagram of another angle of the integral welded frame of a load-bearing truck according to the present invention; Figure 3 This is a partial structural schematic diagram of a load-bearing truck integral welded frame according to the present invention; Figure 4 This is a schematic diagram of another part of the integral welded frame of a load-bearing truck according to the present invention; Figure 5 This is an enlarged structural diagram of point A of a load-bearing truck integral welded frame according to the present invention; Figure 6 This is an enlarged structural diagram of section B of a load-bearing truck integral welded frame according to the present invention.

[0025] In the picture: 1. Chassis body; 101. Body beam; 102. Side plate; 103. Undermount; 104. Side plate; 2. Front anti-collision assembly; 201. Front buffer plate; 202. First buffer spring; 203. Straight energy-absorbing box; 204. Connecting square tube; 205. Connecting sleeve; 206. Arc frame; 207. Positioning plate; 3. Rear anti-collision assembly; 301. Rear buffer plate; 302. Second buffer spring; 303. Arc energy-absorbing box; 304. Connecting rod; 305. High-strength protective plate; 4. Reinforcing assembly; 401. Diamond frame; 402. Inner channel steel; 403. Channel plate; 404. Inner support strip plate; 405. Inner support platform plate; 406. Fixing plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0027] Please see Figures 1-6 The present invention provides a technical solution: a load-bearing truck integral welded frame, including a frame body 1, a front anti-collision component 2 installed at one end of the frame body 1, a rear anti-collision component 3 installed at the other end of the frame body 1, and a reinforcing component 4 provided on the inner side of the frame body 1. The frame body 1 is a main frame, the front anti-collision component 2 is installed at the front to provide front buffer anti-collision, and the rear anti-collision component 3 provides rear protection anti-collision. The reinforcing component 4 can further improve the strength. The frame body 1 has body beams 101 on both sides, and a rhombus frame 401 is welded between the two body beams 101. Multiple inner channel steels 402 are provided on the inner side of the two body beams 101. One side of the rhombus frame 401 is welded to the inner side of the inner channel steel 402. Multiple channel plates 403 are evenly distributed on the outer side of the frame body 1. The rhombus frame 401 is pushed into the space between the body beams 101, and one side of the rhombus frame 401 is embedded into the inner side of the inner channel steel 402 and welded. The channel plates 403 are distributed in multiple positions on the outer side of the body beams 101 to form a stable frame.

[0028] like Figure 3As shown, a front buffer plate 201 is installed on one side of the front anti-collision assembly 2. First buffer springs 202 are distributed at both ends of one side of the front buffer plate 201. One end of the first buffer spring 202 is connected to a straight strip energy-absorbing box 203. The straight strip energy-absorbing box 203 is welded to one end of the square tube 204. The side of the straight strip energy-absorbing box 203 is connected to the front buffer plate 201 through multiple symmetrically distributed first buffer springs 202, which can form a buffer. The sheet metal can be disassembled or replaced later.

[0029] like Figure 4 As shown, a rear buffer plate 301 is installed on one side of the rear anti-collision assembly 3. Second buffer springs 302 are distributed at both ends of one side of the rear buffer plate 301. An arc-shaped energy-absorbing box 303 is installed at one end of the second buffer springs 302. The second buffer springs 302 are symmetrically distributed on the outside of the arc-shaped energy-absorbing box 303 and connected to the rear buffer plate 301, thereby realizing rear anti-collision buffering.

[0030] like Figure 4 As shown, an inner support strip 404 is provided on the inner side of the body beam 101, and multiple inner support plates 405 are evenly distributed on the outer side of the inner support strip 404. The inner support plates 405 are evenly installed on the inner side of the body beam 101. The inner support strip 404 and the inner support plates 405 are welded alternately on the inner side of the body beam 101, so that the two sets of body beams 101 are symmetrically distributed, thereby ensuring the inner support strength of the body beam 101 and preventing breakage.

[0031] like Figure 3 As shown, a connecting square tube 204 is welded to both ends of one side of the straight energy-absorbing box 203. A connecting sleeve 205 is inserted into one end of the connecting square tube 204. An arc-shaped frame 206 is connected to one end of the connecting sleeve 205. The arc-shaped frame 206 and the positioning plate 207 are both welded to one end of the vehicle body beam 101. The connecting sleeve 205 is symmetrically welded to the side of the arc-shaped frame 206 to provide connection space for the connecting square tube 204.

[0032] like Figure 4 As shown, connecting rods 304 are welded to both ends of one side of the arc-shaped energy-absorbing box 303. A high-strength protective plate 305 is welded to one end of the connecting rod 304. The two ends of the high-strength protective plate 305 are connected to the other ends of the two vehicle body beams 101. The high-strength protective plate 305 is welded to the other end of the vehicle body beam 101. The connecting rod 304 is inserted into the inside of the high-strength protective plate 305 and the arc-shaped energy-absorbing box 303 is welded to it, which can provide anti-collision buffer function and improve safety.

[0033] like Figure 6As shown, fixing plates 406 are welded to both ends of the inner channel steel 402. One side of the fixing plate 406 is connected to the inner side of the vehicle body beam 101. The fixing plate 406 facilitates a more stable connection between the inner channel steel 402 and the vehicle body beam 101, thereby improving stability.

[0034] like Figure 3 As shown, positioning plates 207 are symmetrically installed on the side of the arc frame 206. The two ends of the positioning plates 207 are welded to one end of the vehicle body beam 101. The positioning plates 207 help to improve the stability of the arc frame 206 after welding and ensure a stable protective function.

[0035] like Figure 3 As shown, multiple side mounting plates 102 are evenly distributed on the side of the vehicle body beam 101, multiple bottom mounting seats 103 are evenly distributed on the bottom of the vehicle body beam 101, and multiple side mounting seats 104 are installed on the side of the vehicle body beam 101. The side mounting plates 102 and side mounting seats 104 can provide the function of installing external components, and the bottom mounting seats 103 can provide the function of bottom support connection.

[0036] The working principle of the entire mechanism is as follows: First, inner support plates 404 and inner support plates 405 are staggered and welded on the inner side of the car body beam 101, symmetrically distributing the two sets of car body beams 101. Then, inner channel steel 402 is embedded between the two car body beams 101 and welded together to form an overall frame. Subsequently, a diamond frame 401 is pushed between the car body beams 101, and one side of the diamond frame 401 is embedded into the inner side of the inner channel steel 402 and welded. The other two sides are welded to the inner support plates 404 and inner support plates 405 on the inner side of the car body beam 101, thereby improving the support strength. Then, channel plates 403 are distributed at multiple positions on the outer side of the car body beam 101 to form a stable frame. After the frame is stable, the arc frame 206 and positioning plate 207 are welded to one end of the car body beam 101, and connecting sleeves 2 are symmetrically welded to the side of the arc frame 206. 05 provides a connection space for the connecting square tube 204, one end of which is welded with a straight energy-absorbing box 203, and the side of the straight energy-absorbing box 203 is connected to the front buffer plate 201 through multiple symmetrically distributed first buffer springs 202, which can form a buffer and can be disassembled or replaced later. At the same time, the high-strength protective plate 305 is welded to the other end of the vehicle body beam 101, and the connecting rod 304 is inserted into the inside of the high-strength protective plate 305 and welded with an arc-shaped energy-absorbing box 303. The second buffer springs 302 are symmetrically distributed on the outside of the arc-shaped energy-absorbing box 303 and connected to the rear buffer plate 301, thereby realizing rear anti-collision buffer. After the main components are welded, the side plate 102 and the side mount 104 can be welded to the side of the vehicle body beam 101 with matching bolts, and the bottom mount 103 is welded to the bottom of the vehicle body beam 101 to provide external installation support.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A load-bearing truck integral welded frame, comprising a frame body (1), characterized in that: A front anti-collision component (2) is installed at one end of the frame body (1), a rear anti-collision component (3) is installed at the other end of the frame body (1), and a reinforcing component (4) is provided on the inner side of the frame body (1). The frame body (1) is provided with body beams (101) on both sides, and a rhombus frame (401) is welded between the two body beams (101). Multiple inner channel steels (402) are provided on the inner side of the two body beams (101). One side of the rhombus frame (401) is welded to the inner side of the inner channel steel (402). Multiple channel plates (403) are evenly distributed on the outer side of the frame body (1). A front buffer plate (201) is installed on one side of the front anti-collision assembly (2), and a first buffer spring (202) is distributed at both ends of one side of the front buffer plate (201). One end of the first buffer spring (202) is connected to a straight strip energy absorption box (203). A rear buffer plate (301) is installed on one side of the rear anti-collision assembly (3), and a second buffer spring (302) is distributed at both ends on one side of the rear buffer plate (301). An arc-shaped energy-absorbing box (303) is installed at one end of the second buffer spring (302). The inner side of the vehicle body beam (101) is provided with an inner support strip (404), and a plurality of inner support plates (405) are evenly distributed on the outer side of the inner support strip (404). The inner support plates (405) are evenly installed on the inner side of the vehicle body beam (101). The straight energy-absorbing box (203) has a connecting square tube (204) welded to both ends on one side. A connecting sleeve (205) is inserted into one end of the connecting square tube (204), and an arc frame (206) is connected to one end of the connecting sleeve (205). The arc-shaped energy-absorbing box (303) has connecting rods (304) welded to both ends on one side. A high-strength protective plate (305) is welded to one end of the connecting rod (304). The two ends of the high-strength protective plate (305) are connected to the other ends of the two vehicle body beams (101). The inner channel steel (402) has fixing plates (406) welded to both ends, and one side of the fixing plate (406) is connected to the inner side of the vehicle body beam (101). The side of the arc-shaped frame (206) is symmetrically equipped with positioning plates (207), and the two ends of the positioning plates (207) are welded to one end of the vehicle body beam (101); The side of the vehicle body beam (101) is evenly distributed with multiple side mounting plates (102), the bottom of the vehicle body beam (101) is evenly distributed with multiple bottom mounting seats (103), and the side of the vehicle body beam (101) is equipped with multiple side mounting seats (104).

2. A welding method for a monolithic welded frame of a load-bearing truck, characterized in that, The method of using a monolithic welded frame for a load-bearing truck as described in claim 1 includes the following steps: S1. First, inner support strips (404) and inner support station plates (405) are welded alternately on the inner side of the body beam (101). The two sets of body beams (101) are symmetrically distributed. Then, the inner channel steel (402) is embedded into the inner side between the two body beams (101) and welded together to form an overall frame. S2. Then, the diamond frame (401) is pushed between the body beams (101), and one side of the diamond frame (401) is embedded into the inner side of the inner channel steel (402) for welding. The other two sides are welded to the inner support strip (404) and inner support plate (405) on the inner side of the body beam (101) to improve the support strength. S3. Then, the grooved plates (403) are distributed at multiple positions on the outside of the body beam (101) to form a stable frame. S4. After the frame is stabilized, the arc frame (206) and the positioning plate (207) can be welded to one end of the vehicle body beam (101), and the connecting sleeve (205) is symmetrically welded to the side of the arc frame (206) to provide connection space for the connecting square tube (204). S5, wherein a straight energy-absorbing box (203) is welded to one end of the connecting square tube (204), and the side of the straight energy-absorbing box (203) is connected to a front buffer plate (201) through a plurality of symmetrically distributed first buffer springs (202), which can form a buffer; S6. At the same time, the high-strength protective plate (305) is welded to the other end of the vehicle body beam (101), the connecting rod (304) is inserted into the inner side of the high-strength protective plate (305) and an arc-shaped energy-absorbing box (303) is welded on it. The second buffer spring (302) is symmetrically distributed on the outer side of the arc-shaped energy-absorbing box (303) and connected to the rear buffer plate (301) to achieve rear anti-collision buffer. S7. After the main components are welded, the side mounting plate (102) and the side mounting base (104) can be welded to the side of the vehicle body beam (101) with matching bolts, and the bottom mounting base (103) is welded to the bottom of the vehicle body beam (101) to provide external installation support.

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