A high-strength energy-saving carriage fence frame for a cargo truck or semi-trailer

Abstract

A high-strength and energy-saving carriage flower fence for a cargo truck or semi-trailer, belonging to the technical field of special vehicles, the flower fence comprises an upper frame, a lower frame, a vertical frame, a reinforced angle piece and a vertical scale, hinges and door knives are welded on the reinforced angle piece, and the flower fence also comprises a horizontal scale. The flower fence of the present invention changes the traditional bevel connection method, adopts a right-angle connection structure, and designs an enclosing reinforced angle piece to strengthen the connection. In addition, an integral friction hot-melt welding opening is formed to form a reinforced pipe structure, and no additional internal welding of steel pipes is required, which can greatly improve the processing efficiency, strength and quality, and reduce production costs; drainage holes are opened in the vertical frame, the reinforced angle piece and the vertical scale, which can completely and effectively discharge the internal liquid and prevent internal corrosion. The flower fence of the present invention is suitable for carriages with various specifications, and the overall processing efficiency can be increased by more than three times, and the yield rate is increased by more than 70%. The flower fence is stronger, not easily deformed after repeated use, and the service life is extended by at least 3 years.

Description

Technical Field

[0001] The invention belongs to the technical field of special vehicles, and in particular relates to a carriage flower railing frame. Background Art

[0002] The flower guard frame is an important component of the cargo box truck or semi-trailer compartment. It plays a connecting and fixing role, ensuring that the columns do not twist or deform, thereby preventing the items loaded in the vehicle from leaking out.

[0003] The fence is a frame structure made of square or rectangular tubes welded together. According to the different dimensions of the carriage, different numbers of vertical and horizontal scales are set in the middle. Among them, the top horizontal frame (upper frame) is provided with tarpaulin rod mounting holes for mounting the tarpaulin, which is convenient for the insertion and fixing of the tarpaulin rod.

[0004] At present, the flower fence in the prior art is made of square tubes or rectangular tubes with both ends cut at 45° angles and welded end to end. Fig.15 As shown. The processing efficiency of square tubes or rectangular tubes with a 45° bevel is very low, with a high scrap rate and high cost, and is not suitable for large-scale simultaneous cutting and processing; moreover, after the tarpaulin rod hole is opened on the top horizontal frame (upper frame), its strength will be greatly reduced, and it is necessary to weld steel pipes inside the frame for reinforcement. The process is cumbersome, and the additional welding of reinforced steel pipes will also greatly reduce production efficiency and increase production costs. In addition, the welding quality cannot be guaranteed, which affects the smooth insertion of the tarpaulin rod and also affects the service life of the tarpaulin rod and the flower fence. Summary of the invention

[0005] In view of the problems of low bevel welding processing efficiency, high scrap rate, high cost, low strength, complicated process, and poor quality assurance in the existing technology of flower fences, the present invention provides a high-strength and energy-saving car flower fence for a cargo truck or semi-trailer, which changes the traditional bevel connection method, adopts a right-angle connection structure, and designs a surrounding reinforced corner piece to strengthen the connection. In addition, the integral friction hot-melt welding opening forms a reinforced pipe structure, which does not require additional internal welding of steel pipes, can greatly improve the processing efficiency, strength and quality, and reduce production costs. The specific technical scheme is as follows:

[0006] A high-strength and energy-saving carriage fence frame for a cargo truck or semi-trailer, the fence frame comprising an upper frame 1, a lower frame 2, a vertical frame 3, a reinforced corner piece 4 and a vertical scale 5;

[0007] The two ends of the upper frame 1 are respectively fixedly welded to the upper end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces; the two ends of the lower frame 2 are respectively fixedly welded to the lower end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces, forming a square frame body and forming four right-angle welding corners; the four reinforcing corner pieces 4 are welded on the four right-angle welding corners to strengthen the fixed connection of the right-angle welding corners; N vertical scales 5 are evenly distributed and fixed in the square frame, N ≥ 2, to form a grid structure, and the two ends of the vertical scales 5 are respectively welded to the upper frame 1 and the lower frame 2;

[0008] In the above technical solution, the flower fence frame further includes a hinge 6, and the hinge 6 is welded to the reinforcing corner piece 4;

[0009] In the above technical solution, the flower fence frame also includes a door knife 7, and the door knife 7 is welded to the reinforcing angle piece 4;

[0010] In the above technical solution, the upper frame 1, the lower frame 2, the vertical frame 3 and the vertical frame 5 are all hollow square tubes or rectangular tubes, and both ends of the hollow square tubes or rectangular tubes are cut at right angles, that is, right-angle cutting;

[0011] In the above technical solution, drainage holes I3.1 and II3.2 are respectively opened at the welding surfaces of the two ends of the vertical frame 3 and the upper frame 1 and the lower frame 2, and the opening positions of the drainage holes I3.1 and the drainage holes II3.2 are at the middle position of the inner edge of the pipe opening of the corresponding upper frame 1 or the lower frame 2; the drainage holes I3.1 and the drainage holes II3.2 are both semicircular holes or arched holes, and the straight sides of the semicircular holes are in contact with the inner edge of the pipe opening of the upper frame 1 or the lower frame 2; the drainage holes I3.1 and the drainage holes II3.2 are used to drain the liquid in the upper frame 1 or the lower frame 2;

[0012] The opening size of the drainage hole I3.1 and the drainage hole II3.2 is: the hole diameter is (1-2) / 5 of the diameter of the pipe opening of the upper frame 1 or the lower frame 2;

[0013] In the above technical solution, the reinforced corner piece 4 is an integrated fully enclosed reinforced corner piece; the top right-angled side of the reinforced corner piece 4 is provided with a reinforced corner piece drainage hole 4.1, the reinforced corner piece drainage hole 4.1 is a circular hole, and the opening position of the reinforced corner piece drainage hole 4.1 is at the right-angled edge corresponding to the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is provided with a notch at the right-angled edge corresponding to the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is used for draining the liquid in the upper frame 1, the lower frame 2 and the vertical frame 3;

[0014] The top bevel edge of the reinforcing corner piece 4 is provided with a V-shaped notch;

[0015] In the above technical solution, the reinforcing angle piece 4 is integrally formed, cut by die blanking or laser cutting, and then formed by a punch press or a bending machine; or directly processed by a progressive die;

[0016] In the above technical solution, vertical scale drain holes 5.1 are provided at both ends of the vertical scale 5. The opening position of the vertical scale drain holes 5.1 is at the port of the vertical scale 5. The vertical scale drain holes 5.1 are V-shaped holes, and the vertical scale drain holes 5.1 are used to drain the liquid in the vertical scale 5.

[0017] In the above technical solution, the upper frame 1 is provided with an upper frame mounting hole 1.1, which is a circular hole, and is an integrally penetrated hot-melt drilled hole. The hot-melt portion of the upper surface of the upper frame 1 is bent toward the inside of the upper frame 1, and the hot-melt portion of the lower surface of the upper frame 1 is bent toward the vertical pipe mouth 5, forming an integrally formed upper frame 1 with a reinforcing pipe structure 1.2 in the upper and lower directions; the upper frame mounting hole 1.1 is used to insert the tarpaulin rod; the reinforcing pipe structure 1.2 is used to strengthen the bearing capacity of the upper frame mounting hole 1.1 after the tarpaulin rod is inserted;

[0018] The diameter of the upper frame mounting hole 1.1 is (3-4) / 5 of the width of the pipe diameter of the upper frame 1; the length of the reinforcing pipe structure 1.2 is (1-3) / 6 of the height of the pipe diameter of the upper frame 1;

[0019] The upper frame mounting holes 1.1 are arranged corresponding to the pipe openings of the vertical scales 5; the number of the upper frame mounting holes 1.1 is less than or equal to the number of the vertical scales 5;

[0020] In the above technical solution, the flower fence frame is an M-section structure, M≥1; when M>1, the flower fence frame also includes a horizontal scale 8, and the horizontal scale 8 is horizontally arranged to pass through the butt welding ports of the upper and lower vertical scales 5, that is, each section of the vertical scale 5 is butt welded to the horizontal scale 8, and the two ends of the horizontal scale 8 are respectively welded to the two vertical frames 3, and the number of the horizontal scale 8 is ≥1; an M-section grille structure is formed.

[0021] Compared with the existing 45° bevel welding, the flower fence has a weld tensile strength increased by more than 120MPa under the same conditions, and a service life extended by more than 3 years.

[0022] Compared with the prior art, the high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer of the present invention has the following beneficial effects:

[0023] 1. The welding method of the prior art is to cut the two ends of the upper frame, the lower frame and the vertical frame at a 45° angle respectively, and then weld them together. Since the upper frame, the lower frame and the vertical frame are all hollow square tubes or rectangular tubes, the welding method of the two 45° angle cuts will result in low welding strength, poor quality, deformation or cracking, and a low service life of the interface. In addition, when the square tube is cut at a 45° angle, at most 8 square tubes can be placed at the same time for each cutting, which is difficult to cut and has a very low cutting efficiency. If more than 10 tubes are placed for cutting at the same time, the cutting consistency will be reduced, the cutting accuracy will deteriorate, and the scrap rate will increase.

[0024] The present invention directly adopts right-angle welding, which does not require precise 45° opposite-edge welding, and is more convenient to weld; and the welding surface is welded on the surface with an incision on one side and a surface on the other side, so that the welding weld is more solid, and the weld strength is improved, thereby also improving the strength of the flower fence and extending the service life; in addition, when processing the square tube of the present invention, the two ends are directly cut with a sawing machine for straight-mouth cutting, and more than 30 square tubes can be cut at the same time each time, which can also ensure cutting accuracy, and no waste is generated. The difficulty of bundle cutting is low, and the cutting efficiency is greatly improved, which saves production costs, improves efficiency and greatly reduces the scrap rate. Even if the right-angle cutting and 45° bevel cutting are compared under the same conditions, the scrap rate of 45° bevel cutting is also higher.

[0025] Second, in the prior art of 45° bevel butt welding, the tubular cross-sectional dimensions of the upper frame, lower frame and vertical frame must be consistent, otherwise the welding surface cannot be symmetrical, the welding process is difficult, and the adaptability is poor. The present invention adopts right-angle welding, which can arbitrarily combine hollow square tubes or rectangular tubes of different cross-sectional dimensions, is more flexible in processing, and is widely applicable to carriages with various strength requirements.

[0026] 3. The present invention designs a fully enclosed reinforced corner piece. The reinforced corner piece wraps around the four corners of the flower railing frame, which can better protect the welds at the four corners of the flower railing frame, increase strength, and effectively prevent cracking or corrosion; at the same time, the fully enclosed reinforced corner piece can completely wrap around the port of the vertical frame, protect the vertical frame, and prevent the vertical frame port from being deformed or scratching people during use; and the fully enclosed reinforced corner piece is not easy to fall off and be damaged. When in use, it can better withstand the external force of the door knife and hinge, improve durability, and extend service life. In addition, in terms of the overall processing technology, the production cost of the right-angle cutting and welding of the pipe combined with the processing of the reinforced corner piece is also lower than the cost of the 45° angle cutting and welding process, and the production efficiency is also higher than the 45° angle cutting and welding process.

[0027] Fourth, the reinforced corner pieces can be cut by die blanking or laser cutting, and then formed by a punch press or a bending machine. They can also be directly processed by progressive dies. The production method is diverse and simple, with high production efficiency, and does not affect the overall processing cost and efficiency.

[0028] 5. The present invention provides drainage holes at the side welding surfaces at both ends of the vertical frame. The drainage holes are semicircular or arched, and the right-angled sides of the drainage holes fit the middle position of the cut weld of the upper frame or the lower frame. This design can make the liquid drain smoothly and without residue from the upper frame or the lower frame into the vertical frame, and limits the size of the drainage hole. This size is designed according to the welding strength, and can ensure complete drainage and prevent internal corrosion without affecting the welding strength.

[0029] Sixth, since the reinforced corner piece wraps the vertical frame port, the present invention has a circular drainage hole on one side of the right angle side of the end face of the reinforced corner piece, and is provided with an edge notch. This design can completely drain the liquid from the vertical frame without generating residual liquid or backflow; it solves the blocking defect existing in the right angle welding design and prevents internal corrosion, especially corrosion of the four-corner welding seams. Because rainwater or other liquids will flow into the interior of the flower fence pipe through the upper frame mounting hole, causing internal erosion, and the four-corner welding of the flower fence in the prior art has no drainage function, its four-corner welding is very prone to internal corrosion, reducing its service life.

[0030] 7. The present invention provides vertical drain holes at both ends of the vertical scale, which can smoothly drain the liquid in the vertical scale; in addition, the horizontal scale is fully enclosed and welded, and there is no risk of internal corrosion, so the horizontal scale does not have a drain hole.

[0031] 8. The upper frame mounting hole of the present invention adopts the hot melt drilling process. While drilling, the material of the parent material is reshaped and extended to the surrounding of the hole to form a reinforcing structure (reinforcement pipe structure). Therefore, no additional welding of steel pipes is required for reinforcement, which improves production efficiency more than the existing technology, saves both production materials and production processes, and greatly reduces production costs. The hot melt integrally formed mounting hole has higher strength than the welded steel pipe. The reinforcement pipe structure is used to strengthen the bearing capacity of the upper frame mounting hole after the tarpaulin rod is inserted. The size of the upper frame mounting hole and the size of the reinforcement pipe structure are designed. This design can achieve the highest performance reinforcement effect and greatly extend the service life.

[0032] 9. The reinforcement tubes in the prior art are designed with the upper and lower surfaces of the upper frame tube in reverse (the upper and lower reinforcement tubes are welded to the inside of the upper frame tube), which is not conducive to the smooth insertion of the tarpaulin rod; the hot melt drilling direction of the mounting hole of the present invention is consistent, that is, the reinforcement tube structure is consistent in the forward direction on the upper and lower surfaces of the upper frame tube, that is, consistent with the insertion direction of the tarpaulin rod, so that when hot melt drilling, the insertion of the tarpaulin rod will not be hindered by the formation of barbs at the port of the hot melt reinforcement structure, and the smooth insertion effect is better.

[0033] 10. The hot melt drilling process of the present invention can be processed by a multi-hole special machine, and all holes on the symmetrical surface of a pipe can be processed at one time. With the automatic loading and unloading device, full-automatic loading and unloading processing can be realized. The production efficiency is high and the production cost is greatly reduced.

[0034] 11. The vertical frame drainage holes and the reinforced corner piece drainage holes of the present invention are both arranged at the edges of the corresponding pipe openings. The edges are opened to enable the liquid to be discharged more smoothly. If a small drainage hole is opened in the middle, the edge will block the flow of liquid, or cause backflow, and the liquid cannot be completely discharged. The special structural setting of a series of drainage holes is designed for the right-angle welding process, which has the effect of further improving the performance of the right-angle welded flower railing.

[0035] In summary, the high-strength and energy-saving carriage flower guard frame of the present invention has excellent applicability and is suitable for carriages of various specifications. The overall processing efficiency can be increased by more than three times, the yield rate is increased by more than 70%, and the flower guard frame is stronger. Compared with the existing 45° bevel welding, under the same conditions, the tensile strength of the weld is increased by more than 120MPa. It is not easy to deform after repeated use, and the service life is extended by at least 3 years. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a front three-dimensional structural schematic diagram of a high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0037] Figure 2 for Figure 1 A magnified view of the welding corner;

[0038] Figure 3 This is a schematic diagram of the rear three-dimensional structure of a high-strength and energy-saving carriage fence of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0039] Figure 4 for Figure 3 A magnified view of the vertical drainage hole;

[0040] Figure 5 A front view of a high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0041] Figure 6 A top view of a high-strength and energy-saving carriage fence frame of a slatted truck or semi-trailer according to Embodiment 1 of the present invention;

[0042] Figure 7 for Figure 5 The cross-sectional view of the mounting holes and the reinforcement pipe structure on the AA surface;

[0043] Figure 8 for Figure 7 An enlarged view of the mounting holes and reinforcement pipe structure;

[0044] Fig. 9 A schematic diagram of the welding of a square frame of a high-strength and energy-saving carriage fence of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0045] Fig.10 for Fig. 9 A magnified view of the right-angle weld of the square frame;

[0046] Fig.11 A vertical frame schematic diagram of a high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0047] Fig.12A vertical schematic diagram of a high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0048] Fig.13 A schematic diagram of a reinforced corner piece of a high-strength and energy-saving carriage fence frame of a cargo truck or semi-trailer according to Embodiment 1 of the present invention;

[0049] Fig.14 A front view of a high-strength and energy-saving carriage fence frame of a shed-type truck or semi-trailer according to Embodiment 2 of the present invention;

[0050] Figure 1-14 In which: 1-upper frame, 1.1-upper frame mounting hole, 1.2-reinforcement pipe structure, 2-lower frame, 2.1-lower frame mounting hole, 3-vertical frame, 3.1-drainage hole I, 3.2-drainage hole II, 4-reinforced angle piece, 4.1-reinforced angle piece drainage hole, 5-vertical scale, 5.1-vertical scale drainage hole, 6-hinge, 7-door knife, 8-horizontal scale.

[0051] Fig.15 It is a front view of the welding seam of a square tube cut at a 45° angle in the prior art, wherein 1 is an upper frame and 3 is a vertical frame. DETAILED DESCRIPTION

[0052] The following is a combination of specific implementation cases and attached Figure 1-15 The present invention is further described below, but the present invention is not limited to these embodiments.

[0053] Example 1

[0054] According to the size of the top of a semi-trailer compartment, this embodiment uses a stainless steel hollow square tube as the base material to cut and manufacture the upper frame, lower frame and vertical frame of the flower fence. Both ends of the hollow square tube are cut straight, and 30 tubes are cut at the same time each time; the length of the upper frame and the lower frame is 4 meters, and the length of the vertical frame is 1.8 meters. The stainless steel sheet base material is directly processed and manufactured using a progressive die to manufacture an integrated fully enclosed reinforced corner piece.

[0055] A high-strength energy-saving carriage fence frame for a cargo truck or semi-trailer, such as Figure 1-13 As shown, the flower fence frame includes an upper frame 1, a lower frame 2, a vertical frame 3, a reinforced corner piece 4, a vertical scale 5, a hinge 6 and a door knife 7;

[0056] The two ends of the upper frame 1 are respectively fixedly welded to the upper end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces; the two ends of the lower frame 2 are respectively fixedly welded to the lower end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces, forming a square frame body and forming four right-angle welding corners; the four reinforcing corner pieces 4 are welded at the four right-angle welding corners to strengthen the fixed connection of the right-angle welding corners; the seven vertical scales 5 are evenly distributed and fixed in the square frame to form a grid structure, and the two ends of the vertical scales 5 are respectively welded to the upper frame 1 and the lower frame 2; the hinge 6 is welded to the reinforcing corner piece 4; the door knife 7 is welded to the reinforcing corner piece 4;

[0057] The upper frame 1, the lower frame 2, the vertical frame 3 and the vertical frame 5 of this embodiment are all hollow square tubes, and both ends of the hollow square tubes are cut at right angles, that is, right-angle cutting;

[0058] Drain holes I3.1 and II3.2 are respectively provided at the welding surfaces between the two ends of the vertical frame 3 and the upper frame 1 and the lower frame 2. The opening positions of the drainage holes I3.1 and II3.2 are in the middle of the inner edge of the pipe opening of the corresponding upper frame 1 or lower frame 2; the drainage holes I3.1 and II3.2 are both arched holes, and the straight sides of the semicircular holes are in contact with the inner edge of the pipe opening of the upper frame 1 or lower frame 2; the drainage holes I3.1 and II3.2 are used to drain the liquid in the upper frame 1 or lower frame 2;

[0059] The opening size of the drainage hole I3.1 and the drainage hole II3.2 is: the hole diameter is 2 / 5 of the diameter of the pipe opening of the upper frame 1 or the lower frame 2;

[0060] The reinforced corner piece 4 is an integrated fully enclosed reinforced corner piece; a reinforced corner piece drainage hole 4.1 is provided at the right angle edge of the top surface of the reinforced corner piece 4, and the reinforced corner piece drainage hole 4.1 is a circular hole, and the opening position of the reinforced corner piece drainage hole 4.1 is at the right angle edge of the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is provided with a notch at the right angle edge of the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is used for draining liquid from the upper frame 1, the lower frame 2 and the vertical frame 3; a V-shaped notch is provided at the beveled edge of the top surface of the reinforced corner piece 4;

[0061] The reinforcing angle piece 4 is integrally formed, cut by die blanking or laser cutting, and then formed by a punch press or a bending machine; or directly processed by a progressive die;

[0062] Both ends of the vertical scale 5 are provided with vertical scale drainage holes 5.1, the opening position of the vertical scale drainage holes 5.1 is at the port of the vertical scale 5 pipe mouth, the vertical scale drainage holes 5.1 are V-shaped holes, and the vertical scale drainage holes 5.1 are used to drain the liquid in the vertical scale 5;

[0063] The upper frame 1 is provided with an upper frame mounting hole 1.1, which is a circular hole and an integrally penetrated hot-melt drilled hole. The hot-melt portion of the upper surface of the upper frame 1 is bent toward the inside of the upper frame 1, and the hot-melt portion of the lower surface of the upper frame 1 is bent toward the vertical pipe opening 5, forming an integrally formed upper and lower side reinforcing pipe structure 1.2 of the upper frame 1; the upper frame mounting hole 1.1 is used to insert the tarpaulin rod; the reinforcing pipe structure 1.2 is used to strengthen the bearing capacity of the upper frame mounting hole 1.1 after the tarpaulin rod is inserted;

[0064] The diameter of the upper frame mounting hole 1.1 is 4 / 5 of the width of the pipe diameter of the upper frame 1; the length of the reinforcing pipe structure 1.2 is 1 / 4 of the height of the pipe diameter of the upper frame 1;

[0065] The upper frame mounting holes 1.1 are arranged corresponding to the pipe openings of the vertical scale 5, and the number of the upper frame mounting holes 1.1 is 4;

[0066] In this embodiment, drainage holes I3.1 and drainage holes II3.2 are provided at the welding surfaces of the two ends of the vertical frame 3 and the upper frame 1 and the lower frame 2 to drain the liquid in the upper frame 1 and the lower frame 2; a reinforcement angle piece drainage hole 4.1 is provided on the top surface of the reinforcement angle piece 4 to drain the liquid in the upper frame 1, the lower frame 2 and the vertical frame 3; vertical scale drainage holes 5.1 are provided at both ends of the vertical scale 5 to drain the liquid in the vertical scale 5; all drainage holes are opened before welding and assembly.

[0067] The flower guard frame of this embodiment is used on the top of the semi-trailer, so a tarpaulin needs to be installed. The tarpaulin rod supporting the tarpaulin needs to be inserted into the flower guard frame for fixation. Therefore, four upper frame mounting holes 1.1 are provided on the upper frame 1. The upper frame mounting holes 1.1 are integrated through hot-melt drillings, and the hot-melt parts are bent toward the inside of the flower guard frame to form an integrally formed reinforcement pipe structure 1.2; all mounting holes are completed by hot-melt drilling before welding and assembly.

[0068] In this embodiment, a section of a flower fence is welded and assembled. There are 7 vertical bars inside the flower fence. In this embodiment, when preparing the upper frame, lower frame and vertical frame, 30 pipes are cut at right angles at the same time, which is better than the 45° cutting angle (such as Fig.15 The production efficiency of the product (as shown) is increased by 3 times, and the yield rate is 100%; compared with the existing 45° bevel welding, under the same conditions, the tensile strength of the right-angle weld is increased by 125MPa; the forward hot melt hole enables the tarpaulin rod to be smoothly inserted into the flower railing frame, and the fixing effect is very good, saving costs and manufacturing processes compared with the existing welding pipe method; during the trial process, the bearing capacity of the fully surrounded reinforced angle fittings is greatly improved, and the service life of the reinforced angle fittings is greatly extended; the right-angle welding combined with the fully surrounded reinforced angle fittings ensures that the flower railing frame does not deform, and the surrounded reinforced angle fittings protect the right-angle welding point from cracking; the drainage holes opened effectively slow down the internal corrosion of the hollow square tube, and the overall service life of the flower railing frame is extended by more than 3 years.

[0069] Example 2

[0070] According to the size of the top of a semi-trailer compartment, this embodiment uses a stainless steel hollow square tube as the base material to cut and manufacture the upper frame, lower frame and vertical frame of the flower fence. Both ends of the hollow square tube are cut straight, and 40 tubes are cut at the same time each time; the length of the upper frame and the lower frame is 4.5 meters, and the length of the vertical frame is 2 meters. The stainless steel sheet base material is directly processed and manufactured using a progressive die to manufacture an integrated fully enclosed reinforced corner piece.

[0071] A high-strength and energy-saving carriage fence frame for a warehouse-type truck or semi-trailer, the fence frame comprises an upper frame 1, a lower frame 2, a vertical frame 3, a reinforced corner piece 4, a vertical scale 5, a hinge 6, a door knife 7 and a horizontal scale 8; wherein the structure of a single-section fence frame is as shown in the accompanying drawings of the embodiment, and the structure of a two-section fence frame is as shown in the embodiment Fig.14 As shown;

[0072] The two ends of the upper frame 1 are respectively fixedly welded to the upper end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces; the two ends of the lower frame 2 are respectively fixedly welded to the lower end side surfaces of the two vertical frames 3, and the welding surfaces are right-angled surfaces, forming a square frame body and forming four right-angle welding corners; the four reinforcing angle pieces 4 are welded on the outside at the four right-angle welding corners to strengthen the fixed connection of the right-angle welding corners; the flower fence frame is a two-section structure, the horizontal scale 8 is horizontally arranged to pass through the butt welding ports of the upper and lower vertical scales 5, that is, each section of the vertical scale 5 is butt welded to the horizontal scale 8, and the two ends of the horizontal scale 8 are respectively welded to the two vertical frames 3, and the 14 vertical scales 5 are evenly distributed and fixed in the square frame, and the upper and lower 7 vertical scales 5 are symmetrically arranged to the horizontal scale 8 to form a two-section grille structure, and the two ends of the vertical scale 5 are respectively welded to the upper frame 1 and the lower frame 2; the hinge 6 is welded to the reinforcing angle piece 4; the door knife 7 is welded to the reinforcing angle piece 4;

[0073] The upper frame 1, the lower frame 2, the vertical frame 3 and the vertical frame 5 of this embodiment are all hollow square tubes, and both ends of the hollow square tubes are cut at right angles, that is, right-angle cutting;

[0074] Drain holes I3.1 and II3.2 are respectively provided at the welding surfaces between the two ends of the vertical frame 3 and the upper frame 1 and the lower frame 2. The opening positions of the drainage holes I3.1 and II3.2 are in the middle of the inner edge of the pipe opening of the corresponding upper frame 1 or lower frame 2; the drainage holes I3.1 and II3.2 are both arched holes, and the straight sides of the semicircular holes are in contact with the inner edge of the pipe opening of the upper frame 1 or lower frame 2; the drainage holes I3.1 and II3.2 are used to drain the liquid in the upper frame 1 or lower frame 2;

[0075] The opening size of the drainage hole I3.1 and the drainage hole II3.2 is: the hole diameter is 2 / 5 of the diameter of the pipe opening of the upper frame 1 or the lower frame 2;

[0076] The reinforced corner piece 4 is an integrated fully enclosed reinforced corner piece; a reinforced corner piece drainage hole 4.1 is provided at the right angle edge of the top surface of the reinforced corner piece 4, and the reinforced corner piece drainage hole 4.1 is a circular hole, and the opening position of the reinforced corner piece drainage hole 4.1 is at the right angle edge of the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is provided with a notch at the right angle edge of the tube opening of the vertical frame 3; the reinforced corner piece drainage hole 4.1 is used for draining liquid from the upper frame 1, the lower frame 2 and the vertical frame 3; a V-shaped notch is provided at the beveled edge of the top surface of the reinforced corner piece 4;

[0077] The reinforcing angle piece 4 is integrally formed, cut by die blanking or laser cutting, and then formed by a punch press or a bending machine; or directly processed by a progressive die;

[0078] Both ends of the vertical scale 5 are provided with vertical scale drainage holes 5.1, the opening position of the vertical scale drainage holes 5.1 is at the port of the vertical scale 5 pipe mouth, the vertical scale drainage holes 5.1 are V-shaped holes, and the vertical scale drainage holes 5.1 are used to drain the liquid in the vertical scale 5;

[0079] The upper frame 1 is provided with an upper frame mounting hole 1.1, which is a circular hole and an integrally penetrated hot-melt drilled hole. The hot-melt portion of the upper surface of the upper frame 1 is bent toward the inside of the upper frame 1, and the hot-melt portion of the lower surface of the upper frame 1 is bent toward the vertical pipe opening 5, forming an integrally formed upper and lower side reinforcing pipe structure 1.2 of the upper frame 1; the upper frame mounting hole 1.1 is used to insert the tarpaulin rod; the reinforcing pipe structure 1.2 is used to strengthen the bearing capacity of the upper frame mounting hole 1.1 after the tarpaulin rod is inserted;

[0080] The diameter of the upper frame mounting hole 1.1 is 4 / 5 of the width of the pipe diameter of the upper frame 1; the length of the reinforcing pipe structure 1.2 is 1 / 4 of the height of the pipe diameter of the upper frame 1;

[0081] The upper frame mounting holes 1.1 are arranged corresponding to the pipe openings of the vertical scale 5, and the number of the upper frame mounting holes 1.1 is 4;

[0082] In this embodiment, drainage holes I3.1 and drainage holes II3.2 are provided at the welding surfaces of the two ends of the vertical frame 3 and the upper frame 1 and the lower frame 2 to drain the liquid in the upper frame 1 and the lower frame 2; a reinforcement angle piece drainage hole 4.1 is provided on the top surface of the reinforcement angle piece 4 to drain the liquid in the upper frame 1, the lower frame 2 and the vertical frame 3; vertical scale drainage holes 5.1 are provided at both ends of the vertical scale 5 to drain the liquid in the vertical scale 5; all drainage holes are opened before welding and assembly.

[0083] The flower guard frame of this embodiment is used on the top of the semi-trailer, so a tarpaulin needs to be installed. The tarpaulin rod supporting the tarpaulin needs to be inserted into the flower guard frame for fixation. Therefore, four upper frame mounting holes 1.1 are provided on the upper frame 1. The upper frame mounting holes 1.1 are integrated through hot-melt drillings, and the hot-melt parts are bent toward the inside of the flower guard frame to form an integrally formed reinforcement pipe structure 1.2; all mounting holes are completed by hot-melt drilling before welding and assembly.

[0084] In this embodiment, two sections of flower fences are welded and assembled, and there are 14 vertical bars inside the flower fences. In this embodiment, when preparing the upper frame, lower frame and vertical frame, 40 pipes are cut at right angles at the same time, which is better than the 45° cutting angle (such as Fig.15 The production efficiency of the right-angle welded steel pipe (as shown in the figure) is increased by 4 times, and the yield rate is 100%. Compared with the existing 45° bevel welding, under the same conditions, the tensile strength of the right-angle weld is increased by 130MPa; the forward hot melt hole enables the tarpaulin rod to be smoothly inserted into the flower fence frame, and the fixing effect is very good, saving costs and manufacturing processes compared with the existing welding pipe method; during the trial, the bearing capacity of the fully enclosed reinforced corner pieces is greatly improved, and it can bear the heavier two-section flower fence frame, and the service life of the reinforced corner pieces is greatly extended; the right-angle welding combined with the fully enclosed reinforced corner pieces ensures that the flower fence frame does not deform, and the enclosed reinforced corner pieces protect the right-angle welding from cracking; the drainage holes are opened to slow down the internal corrosion of the hollow square tube. Compared with the existing 45° bevel welded two-layer flower fence frame, the two-layer flower fence frame of this embodiment has improved bearing capacity, corrosion resistance, and an overall service life of more than 4 years.

Claims

1. A high-strength and energy-saving carriage fence for a cargo truck or semi-trailer, characterized in that: The flower fence frame comprises an upper frame (1), a lower frame (2), a vertical frame (3), a reinforced corner piece (4) and a vertical scale (5); The two ends of the upper frame (1) are respectively fixedly welded to the upper end side surfaces of the two vertical frames (3), and the welding surfaces are right-angled surfaces; the two ends of the lower frame (2) are respectively fixedly welded to the lower end side surfaces of the two vertical frames (3), and the welding surfaces are right-angled surfaces, forming a square frame body and forming four right-angle welding corners; the four reinforcing corner pieces (4) are externally welded at the four right-angle welding corners to strengthen the fixed connection of the right-angle welding corners; N vertical scales (5) are evenly distributed and fixed in the square frame body, N ≥ 2, to form a grid structure, and the two ends of the vertical scales (5) are respectively welded to the upper frame (1) and the lower frame (2); The upper frame (1), the lower frame (2), the vertical frame (3) and the vertical scale (5) are all hollow square tubes or rectangular tubes, and both ends of the hollow square tube or rectangular tube are cut at right angles, that is, right-angle cutting; A drainage hole I (3.1) and a drainage hole II (3.2) are respectively provided at the welding surfaces between the two ends of the vertical frame (3) and the upper frame (1) and the lower frame (2), and the opening positions of the drainage holes I (3.1) and the drainage holes II (3.2) are located at the middle position of the inner edge of the pipe opening of the corresponding upper frame (1) or lower frame (2); The reinforced corner piece (4) is an integrated fully enclosed reinforced corner piece; a reinforced corner piece drainage hole (4.1) is provided at a right angle edge of the top surface of the reinforced corner piece (4); the reinforced corner piece drainage hole (4.1) is a circular hole, and the opening position of the reinforced corner piece drainage hole (4.1) is at a right angle edge of the pipe opening of the corresponding vertical frame (3); a notch is provided at the right angle edge of the drainage hole (4.1) corresponding to the pipe opening of the vertical frame (3); the reinforced corner piece drainage hole (4.1) is used for draining liquid from the upper frame (1), the lower frame (2) and the vertical frame (3); a V-shaped notch is provided at the beveled edge of the top surface of the reinforced corner piece (4); The upper frame (1) is provided with an upper frame mounting hole (1.1), the upper frame mounting hole (1.1) is a circular hole, the upper frame mounting hole (1.1) is an integrally penetrated hot-melt drilled hole, the hot-melt portion of the upper surface of the upper frame (1) is bent toward the inside of the upper frame (1), and the hot-melt portion of the lower surface of the upper frame (1) is bent toward the vertical pipe opening (5), so as to form an integrally formed upper frame (1) upper and lower sides in the same direction reinforcing tube structure (1.2); the upper frame mounting hole (1.1) is used to insert a tarpaulin rod; the reinforcing tube structure (1.2) is used to strengthen the bearing capacity of the upper frame mounting hole (1.1) after the tarpaulin rod is inserted; The diameter of the upper frame mounting hole (1.1) is (3-4) / 5 of the width of the pipe diameter of the upper frame (1); the length of the reinforcing pipe structure (1.2) is (1-3) / 6 of the height of the pipe diameter of the upper frame (1); and the upper frame mounting hole (1.1) is arranged corresponding to the pipe opening of the vertical scale (5).

2. A high-strength and energy-saving carriage fence frame for a shed-type truck or semi-trailer according to claim 1, characterized in that: The flower fence frame also includes a hinge (6), and the hinge (6) is welded to the reinforcing corner piece (4).

3. The high-strength and energy-saving carriage fence frame for a shed-type truck or semi-trailer according to claim 1, characterized in that: The flower fence frame also includes a door knife (7), and the door knife (7) is welded to the reinforcing angle piece (4).

4. The high-strength and energy-saving carriage fence frame for a shed-type truck or semi-trailer according to claim 1, characterized in that: The drainage hole I (3.1) and the drainage hole II (3.2) are both semicircular holes or arched holes, and the straight sides of the semicircular holes are in contact with the inner edge of the pipe opening of the upper frame (1) or the lower frame (2); the drainage hole I (3.1) and the drainage hole II (3.2) are used to drain the liquid in the upper frame (1) or the lower frame (2).

5. The high-strength and energy-saving carriage fence frame for a shed-type truck or semi-trailer according to claim 4, characterized in that: The opening dimensions of the drainage hole I (3.1) and the drainage hole II (3.2) are as follows: the hole diameter is (1-2) / 5 of the diameter of the pipe opening of the upper frame (1) or the lower frame (2).

6. The high-strength and energy-saving carriage fence frame for a cargo truck or semi-trailer according to claim 1, characterized in that: The reinforcing angle piece (4) is integrally formed, cut by die blanking or laser cutting, and then formed by a punch press or a bending machine; or directly processed by a progressive die.

7. The high-strength and energy-saving carriage fence frame for a cargo truck or semi-trailer according to claim 1, characterized in that: Vertical scale drainage holes (5.1) are provided at both ends of the vertical scale (5); the opening position of the vertical scale drainage holes (5.1) is at the port of the vertical scale (5) pipe mouth; the vertical scale drainage holes (5.1) are V-shaped holes; and the vertical scale drainage holes (5.1) are used to drain the liquid in the vertical scale (5).

8. The high-strength and energy-saving carriage fence frame for a cargo truck or semi-trailer according to claim 1, characterized in that: The number of the upper frame mounting holes (1.1) is less than or equal to the number of the vertical scales (5).

9. The high-strength and energy-saving carriage fence frame for a cargo truck or semi-trailer according to claim 1, characterized in that: The flower fence frame is an M-section structure, M≥1; when M>1, the flower fence frame also includes a horizontal scale (8), and the horizontal scale (8) is horizontally arranged to pass through the butt welding ports of the upper and lower vertical scales (5), that is, each section of the vertical scale (5) is butt welded to the horizontal scale (8), and the two ends of the horizontal scale (8) are respectively welded to the two vertical frames (3), and the number of the horizontal scale (8) is ≥1; forming an M-section grid structure.

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