A weight-reducing frame structure and processing technology

Abstract

The present invention discloses a weight-reducing frame structure and processing technology. The weight-reducing frame structure includes an upper cover assembly, a base assembly and a fuel tank assembly. The upper cover assembly is arranged above the base assembly, and the fuel tank assembly is located between the upper cover assembly and the base assembly. The base assembly includes a bottom bracket, a side bracket and a vertical support. The side bracket is arranged on the outside of the bottom bracket, the vertical support is arranged on the bottom bracket, and the fuel tank assembly is arranged on the bottom bracket and is confined within the vertical support. The bottom bracket includes a bottom side beam and a bottom main beam. Two of the bottom side beams are parallel, and a plurality of the bottom main beams are arranged in parallel in the two bottom side beams, and the bottom main beam is perpendicular to the bottom side beam. The bottom side beam is a square tube, and the bottom main beam is one or more of a square tube, an angle steel and a channel steel. The vertical support is one or both of a flat tube and a channel steel. The present invention reduces the weight of the frame, standardizes the production of the frame structure, and ensures the consistency of the frame structure.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding machines, and particularly relates to a weight-reducing frame structure and a processing technology. Background Art

[0002] An injection molding machine melts plastic pellets and applies high pressure to them, ejecting them into the mold cavity. One half of the mold is fixed to a stationary platen, and the other half to a movable platen. When the mold is closed, the mold cavity is formed. The melted plastic pellets are injected into the mold. After cooling under pressure, the movable platen moves to separate the mold, ejecting the product from the mold cavity and entering the next cycle.

[0003] The clamping mechanism, including the fixed and movable platens that secure the mold, as well as the injection molding mechanism that melts the plastic pellets and applies high pressure to eject them, all need to be mounted on the machine frame. The frame serves as a platform, bearing both weight and stability. Currently, the machine frame is typically welded together from a base, a top cover, and a fuel tank. Due to assembly requirements, the base, top cover, and fuel tank are typically fabricated separately and then welded together. This is particularly true given the complex shapes of the base and top cover, which complicates the fabrication process. Furthermore, the quality of the welded parts varies, making standardized production difficult.

[0004] For example, the waste oil tank on the upper cover needed to be bent and then welded, which consumed considerable production time, and poor welding could lead to oil leaks. During the base fabrication process, the complex shape of the connection between the crossbeam and the main beam increased processing time and required welding inside the steel part, preventing automated welding. Furthermore, the base's vertical supports were all made from bent steel sheets, which took a long time to process and impacted the production of the frame structure.

[0005] In summary, it is necessary to propose a new frame structure and corresponding processing technology. Summary of the Invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to provide a weight-reducing frame structure and processing technology to reduce the weight of the frame, standardize the production of the frame structure, and ensure the consistency of the frame structure.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0008] A weight-reducing frame structure comprises an upper cover assembly, a base assembly and an oil tank assembly, wherein the upper cover assembly is arranged above the base assembly, and the oil tank assembly is located between the upper cover assembly and the base assembly;

[0009] The base assembly includes a bottom bracket, a side bracket and a vertical support member, the side bracket is arranged on the outside of the bottom bracket, the vertical support member is arranged on the bottom bracket, and the fuel tank assembly is arranged on the bottom bracket and is confined in the vertical support member;

[0010] The bottom bracket includes a bottom side beam and a bottom main beam, the two bottom side beams are parallel, a plurality of bottom main beams are arranged in parallel in the two bottom side beams, and the bottom main beam is perpendicular to the bottom side beams, the bottom side beams are square tubes, the bottom main beams are one or more of square tubes, angle steels and channel steels, and the vertical supports are one or both of flat tubes and channel steels;

[0011] The upper cover assembly includes a top bracket and an upper cover plate, the upper cover plate is fixedly mounted on the top bracket, the top bracket includes a top side beam and a top main beam, the two top side beams are parallel, a plurality of top main beams are arranged in parallel in the two top side beams, and the top main beams are perpendicular to the top side beams, the bottom surface of the top side beams is fixedly connected to the vertical support, the top side beams are square tubes, and the top main beams are channel steels.

[0012] Preferably, the bottom main beam includes a first main beam and a second main beam, and the front and rear ends of the two bottom side beams are connected and fixed by the first main beam. Along the length direction of the bottom side beam, the bottom side beam is divided into a first part and a second part. In the first part of the bottom side beam, multiple first main beams are arranged in parallel, and in the second part of the bottom side beam, multiple second main beams are arranged in parallel, and the fuel tank assembly is arranged on the second main beam.

[0013] More preferably, the vertical support member includes a first vertical support and a second vertical support. Along the length direction of the bottom side beam member, in the first part of the bottom side beam member, multiple first vertical supports are vertically arranged on the top surface of the bottom side beam member, and along the length direction of the bottom side beam member, multiple second vertical supports are vertically arranged on the top surface of the bottom side beam member, and the fuel tank assembly is located between the second vertical supports.

[0014] More preferably, the fuel tank assembly includes a fuel tank body, which is placed between adjacent first upright supports and second upright supports, wherein the length of the fuel tank body is greater than the distance between adjacent first upright supports and second upright supports, and the width of the fuel tank body is greater than the distance between the second upright supports on both sides, the width of the fuel tank body is less than the distance between the first upright supports on both sides, and the width of the fuel tank body is greater than the minimum distance between the two bottom side beams.

[0015] More preferably, the bottom side beam is a square tube, the first main beam is a square tube, the second main beam is an angle steel and / or a channel steel, the first vertical support is a flat tube, and the second vertical support is a channel steel.

[0016] Preferably, a waste oil trough and a fuel tank hole are provided in the upper cover plate, the fuel tank hole is located above the fuel tank body, and the waste oil trough is formed by stamping.

[0017] A processing technology for a weight-reducing frame structure includes welding bottom side beams and vertical support members, as follows:

[0018] A positioning member is provided between the bottom side beam and the vertical support member. The positioning member includes a fixing portion and a pin. The fixing portion is in the shape of a rectangular parallelepiped. Two pins are vertically provided on the bottom surface of the fixing portion along the length direction of the bottom surface of the fixing portion. The length of the fixing portion is equal to the width or length of the horizontal cross section inside the vertical support member.

[0019] Along the length direction of the bottom side beam, a plurality of groups of main positioning holes are provided on the top surface of the bottom side beam. Each group of main positioning holes includes two through holes. On the same bottom side beam, the number of groups of main positioning holes is the same as the number of vertical supports on the bottom side beam. The through holes are connected to the internal space of the bottom side beam. The two through holes in each group of main positioning holes are adapted to the two pins of the positioning piece.

[0020] Before welding, insert multiple positioning pieces into the top surface of the bottom side beam in sequence, insert the vertical support pieces into the positioning pieces at the corresponding positions, and move the vertical support pieces until the positioning pieces abut against the inner side surfaces of the vertical support pieces to achieve positioning. Keep the vertical support pieces abutting against the positioning pieces and then weld them. Accurately confirm the positions of all vertical support pieces after welding, and finally remove the positioning pieces.

[0021] Preferably, a cross hole is provided on the side surface of the positioning member in the longitudinal direction, and the cross hole is formed by a transverse connecting hole and a longitudinal connecting hole.

[0022] More preferably, the processing technology further comprises welding the bottom side beam member to the bottom main beam member;

[0023] The locking mechanism comprises a locking block, a guide rod and a T-shaped positioning plate, the locking block is provided with a docking square hole that passes through horizontally, and the positioning square tube passes through the locking block, the T-shaped positioning plate comprises a first plate perpendicular to the bottom side beam and a second plate parallel to the bottom side beam. Along the length direction of the bottom side beam, the length of the first plate of the T-shaped positioning plate is greater than the minimum distance between the two bottom side beams, the length of the second plate of the T-shaped positioning plate is greater than the width of the bottom main beam, and the width of the second plate is less than the minimum distance between the two bottom side beams, the top ends of the multiple guide rods pass through the locking block from bottom to top and lock it. The bottom ends of the multiple guide rods are respectively fixedly connected to the front and rear ends of the second plate of the T-shaped positioning plate, the second plate of the T-shaped positioning plate is provided with two positioning blocks, the distance between the two positioning blocks is the same as the width of the bottom main beam, and the height of the positioning block is greater than the height of the bottom main beam;

[0024] First weld the bottom main beam, and then weld the vertical support parts, as follows:

[0025] When welding the bottom main beam, first place the two bottom side beams in parallel so that the distance between the two bottom side beams is close to the length of the first main beam, install positioning pieces on the two bottom side beams, put a locking block between the two opposite positioning pieces, and pass the positioning square tube through the positioning piece, the locking block and another positioning piece in sequence so that the locking block is above the two bottom side beams, move the T-shaped positioning plate and multiple guide rods upward from the bottom of the two bottom side beams, and make the multiple guide rods pass through the locking blocks respectively until the two ends of the T-shaped positioning plate abut against the bottom surfaces of the two bottom side beams, thereby limiting the further rise of the T-shaped positioning plate, and then lock the guide rods and the locking blocks;

[0026] Place the main beam between the two positioning blocks of the T-shaped positioning plate, adjust the two bottom side beams so that they are respectively in contact with the two ends of the first main beam, and then weld them; after welding is completed, remove the positioning square tube and locking mechanism, and then weld the vertical support parts.

[0027] Preferably, the processing technology further includes welding the top side beam and the top main beam as follows:

[0028] Multiple auxiliary rods are arranged between the two top side beams. Along the length direction of the top side beams, the top side beams have multiple groups of side positioning holes. Each group of side positioning holes includes four through holes, two of which are located on the outer side of the top side beams, and two of which are located on the inner side of the top side beams. The through holes on the inner and outer side surfaces are coaxially arranged in pairs. In the same group of positioning holes, the straight line where the two through holes located on the outer side or the inner side are located is parallel to the height direction of the top side beams. Every two auxiliary rods pass through a group of positioning holes in a top side beam. The auxiliary rods connect the two top side beams to form a whole, and then the inner side of the top main beam is pressed against the auxiliary rods to achieve positioning. The positions of the two top side beams are adjusted so that the top side beams abut against the top main beams, and then welding is performed. After welding is completed, the auxiliary rods are taken out from the top side beams.

[0029] Beneficial effects:

[0030] The present invention reduces the weight of the frame, standardizes the production of the frame structure, and ensures the consistency of the frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is an overall schematic diagram of the weight-reducing frame structure of the present invention;

[0032] Figure 2 Shown is a schematic diagram of the base assembly of the present invention;

[0033] Figure 3 Shown is a schematic diagram of the upper cover assembly of the present invention;

[0034] Figure 4 Shown is a schematic diagram of the connection between the base assembly and the fuel tank body of the present invention;

[0035] Figure 5 Shown is a schematic diagram of the connection between the base assembly and the fuel tank body of the present invention from another angle;

[0036] Figure 6 Shown is a schematic diagram of the cooperation between the base assembly and the positioning member of the present invention;

[0037] Figure 7 Shown Figure 6 A magnified schematic diagram of point A in the middle;

[0038] Figure 8 Shown Figure 6 A magnified schematic diagram of point B in the middle;

[0039] Figure 9 Shown is a schematic diagram of a positioning member;

[0040] Figure 10 Shown is a schematic diagram of the cooperation between the positioning piece, the positioning square tube and the locking mechanism;

[0041] Figure 11 Shown is a schematic diagram of a T-type positioning plate.

[0042] Reference numerals: 1-base assembly, 2-upper cover assembly, 3-fuel tank assembly, 4-positioning member, 5-positioning square tube, 6-locking mechanism;

[0043] 11- bottom bracket, 12- side bracket, 111- bottom side beam, 112- bottom main beam, 113- vertical support, 1121- first main beam, 1122- second main beam, 1131- first vertical support, 1132- second vertical support;

[0044] 21-top bracket, 22-upper cover, 211-top side beam, 212-top main beam, 221-waste oil tank, 222-oil tank hole

[0045] 31- fuel tank body;

[0046] 41 - fixing portion, 42 - pin, 43 - horizontal communication hole, 44 - vertical communication hole;

[0047] 61-locking block, 62-T-type positioning plate, 63-guide rod, 64-positioning block. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0049] The present invention recognizes that the assembly and welding of existing frame structures require high-precision equipment to achieve truly standardized production, which greatly increases processing costs, while the use of common welding equipment cannot guarantee product consistency. Based on this, the present invention proposes a new frame structure that can achieve standardized production even under ordinary production conditions.

[0050] like Figure 1-11 As shown, the present invention proposes a weight-reducing frame structure, comprising an upper cover assembly 2, a base assembly 1, and a fuel tank assembly 3. The upper cover assembly 2 is disposed above the base assembly 1, and the fuel tank assembly 3 is located between the upper cover assembly 2 and the base assembly 1. The technical solution of the present invention is described in detail below using a specific structure.

[0051] like Figure 1-5 As shown, the base assembly 1 includes a bottom bracket 11, a side bracket 12 and a vertical support 113. The side bracket 12 is arranged on the outside of the bottom bracket 11, the vertical support 113 is arranged on the bottom bracket 11, the upper cover assembly 2 is fixedly arranged on the top of the vertical support assembly, and the fuel tank assembly 3 is arranged on the bottom bracket 11 and is confined in the vertical support 113.

[0052] The bottom bracket 11 includes a bottom side beam 111 and a bottom main beam 112. The two bottom side beams 111 are parallel to each other, and a plurality of bottom main beams 112 are arranged in parallel between the two bottom side beams 111. The bottom main beams 112 are perpendicular to the bottom side beams 111. In other words, the bottom bracket 11 has a ladder-like structure.

[0053] Furthermore, the bottom main beam 112 includes a first main beam 1121 and a second main beam 1122. The front and rear ends of the two bottom side beams 111 are connected and fixed by the first main beam 1121. Along the length direction of the bottom side beam 111, the bottom side beam 111 is divided into a first part and a second part. In the first part of the bottom side beam 111, multiple first main beams 1121 are arranged in parallel. In the second part of the bottom side beam 111, multiple second main beams 1122 are arranged in parallel. The fuel tank assembly 3 is arranged on the second main beam 1122.

[0054] The vertical support member 113 includes a first vertical support 1131 and a second vertical support 1132. Along the length direction of the bottom side beam 111, in the first part of the bottom side beam 111, multiple first vertical supports 1131 are vertically arranged on the top surface of the bottom side beam 111. Along the length direction of the bottom side beam 111, multiple second vertical supports 1132 are vertically arranged on the top surface of the bottom side beam 111, and the fuel tank assembly 3 is located between the second vertical supports 1132.

[0055] It is easy to understand that the first uprights 1131 are arranged on the two bottom side beams 111 in pairs, that is, Figure 2Similarly, the second uprights 1132 are also arranged in pairs on the two bottom beams 111 .

[0056] Preferably, in the present invention, bottom side beam 111 is a square tube, i.e., a square steel pipe; first main beam 1121 is a square tube; second main beam 1122 is angle steel and / or channel steel; first vertical support 1131 is a flat tube, i.e., a flat steel pipe; and second vertical support 1132 is a channel steel. The bottom bracket 11 of the present invention utilizes steel components such as square tubes, flat tubes, channel steel, and angle steel, which helps reduce the weight of the bottom bracket 11 and provides smooth connecting surfaces for easy welding.

[0057] The first and second vertical supports 1131, 1132 are connected to the bottom side beam 111 by welding, and the first and second main beams 1121, 1122 are connected to the bottom side beam 111 by welding. To achieve standardization of the welding of the vertical supports 113 and consistency of welding quality, the present invention proposes corresponding positioning methods for the processing operation of the bottom bracket 11, as follows:

[0058] A positioning member 4 is arranged between the bottom side beam 111 and the first vertical support 1131, and a positioning member 4 is also arranged between the bottom side beam 111 and the second vertical support 1132. The positioning member 4 includes a fixing portion 41 and a pin 42. The fixing portion 41 is in the shape of a rectangular parallelepiped. Along the length direction of the bottom surface of the fixing portion 41, two pins 42 are vertically arranged on the bottom surface of the fixing portion 41. The length of the fixing portion 41 is equal to the width of the horizontal cross-section inside the first vertical support 1131. The width of the fixing portion 41 is smaller than the length of the horizontal cross-section inside the first vertical support 1131, and the length of the fixing portion 41 is smaller than the length of the horizontal cross-section inside the second vertical support 1132.

[0059] Along the length direction of the bottom side beam 111, a plurality of groups of main positioning holes are set on the top surface of the bottom side beam 111, and each group of main positioning holes includes two through holes. On the same bottom side beam 111, the number of groups of main positioning holes is the same as the total number of first vertical supports 1131 and second vertical supports 1132 on the bottom side beam 111. The through holes are connected to the internal space of the bottom side beam 111, and the two through holes of each group of main positioning holes are adapted to the two pins 42 of the positioning member 4.

[0060] On the top surface of the first part of the bottom side beam 111, the straight line where the two through holes are located is perpendicular to the length direction of the bottom side beam 111; on the top surface of the second part of the bottom side beam 111, the straight line where the two through holes are located is parallel to the length direction of the bottom side beam 111.

[0061] Before welding, multiple positioning members 4 are inserted into the top surface of the first part of the bottom side beam 111 in sequence. When the first vertical support 1131 needs to be welded, the first vertical support 1131 is inserted outside the positioning member 4 at the corresponding position, and the first vertical support 1131 is moved toward one end portion of the bottom side beam 111 until the positioning member 4 abuts against the side surface of the inner width of the first vertical support 1131, thereby achieving positioning. Since the length of the fixing portion 41 of the positioning member 4 is equal to the width of the horizontal cross-section inside the first vertical support 1131, the first vertical support 1131 can only move along the length direction of the bottom side beam 111. As long as the first vertical support 1131 is kept in abutment with the positioning member 4 and welding is performed, the position of all first vertical supports 1131 after welding can be accurately confirmed.

[0062] Since the first vertical support 1131 is flat, after the first vertical support 1131 is welded, the positioning member 4 is taken out from the top end of the first vertical support 1131 .

[0063] Similarly, before welding, multiple positioning members 4 are inserted into the top surface of the second part of the bottom side beam 111 in sequence. When the second vertical support 1132 needs to be welded, the second vertical support 1132 is inserted into the positioning member 4 at the corresponding position, and the position of the second vertical support 1132 is adjusted so that the length direction side surface of the positioning member 4 abuts against the length side surface of the second vertical support 1132, and the width direction side surface of the positioning member 4 abuts against the width side surface of one side of the second vertical support 1132, thereby achieving positioning. As long as the second vertical support 1132 is kept in abutment and positioning with the positioning member 4 before welding, the position of all second vertical supports 1132 after welding can be accurately confirmed.

[0064] Since the second vertical support 1132 is a channel steel, after the second vertical support 1132 is welded, the positioning member 4 is taken out from the side of the second vertical support 1132 .

[0065] Furthermore, in order to facilitate the removal of the positioning member 4 from the first vertical support 1131 and the second vertical support 1132, a cross hole is set on the side of the longitudinal direction of the positioning member 4 as a fulcrum for hooking. The cross hole is formed by a transverse connecting hole 43 and a longitudinal connecting hole 44. It is easy to understand that the transverse connecting hole 43 penetrates the fixing part 41 along the length direction of the fixing part 41, and the longitudinal connecting hole 44 penetrates the fixing part 41 along the width direction of the fixing part 41. The transverse connecting hole 43 and the longitudinal connecting hole 44 overlap in the middle part of the fixing part 41. For example, when it is necessary to take out the positioning member 4 in the first vertical support 1131, extend the pull rod with a hook-shaped end into the first vertical support 1131, and extend the hook-shaped end of the pull rod into the horizontal through hole of the cross hole of the positioning member 4, and then pull the positioning member 4 upward; when it is necessary to take out the positioning member 4 in the second vertical support 1132, select an insertion rod that is compatible with the longitudinal through hole of the cross hole of the positioning member 4, insert one end of the insertion rod into the longitudinal through hole of the positioning member 4, and then use the rest of the insertion rod as a force point to lift the positioning member 4 upward until the pin 42 of the positioning member 4 is separated from the bottom side beam 111, and then take the positioning member 4 out from the side of the second vertical support 1132.

[0066] In order to achieve the standardization of the welding of the first main beam 1121 and the second main beam 1122 and the consistency of the welding quality, a positioning square tube 5 and a locking mechanism 6 are set between the two bottom side beams 111. The transverse connecting hole 43 and the longitudinal connecting hole 44 of the positioning member 4 are both square holes and are adapted to the shape of the positioning square tube 5. The positioning square tube 5 is inserted into the two corresponding positioning members 4 of the two bottom side beams 111, so that the positioning square tube 5 is stably located above the two bottom side beams 111. The locking mechanism 6 includes a locking block 61, a guide rod 63 and a T-shaped positioning plate 62. Figure 11 As shown, the locking block 61 is provided with a horizontally penetrating docking square hole, the positioning square tube 5 passes through the locking block 61, the locking block 61 is provided with a plurality of vertical guide holes, and the plurality of vertical guide holes are respectively located in front and behind the positioning square tube 5, and a plurality of guide rods 63 respectively pass through the guide holes, and each guide hole is provided with a locking screw to lock the guide rod 63 and the locking block 61, and the T-shaped positioning plate 62 includes a first plate perpendicular to the bottom side beam 111 and a second plate parallel to the bottom side beam 111. Along the length direction of the bottom side beam 111, the first plate of the T-shaped positioning plate 62 is perpendicular to the bottom side beam 111. The length of one plate is greater than the minimum distance between the two bottom side beams 111, the length of the second plate of the T-shaped positioning plate 62 is greater than the width of the bottom main beam 112, the width of the second plate is less than the minimum distance between the two bottom side beams 111, and the bottom ends of multiple guide rods 63 are respectively fixedly connected to the front and rear ends of the second plate of the T-shaped positioning plate 62, and two positioning blocks 64 are set on the second plate of the T-shaped positioning plate 62. The distance between the two positioning blocks 64 is the same as the width of the bottom main beam 112, and the height of the positioning blocks 64 is greater than the height of the bottom main beam 112.

[0067] The locking screw is inserted from the outside of the locking block 61 to the side of the corresponding guide hole, and locks the guide rod 63 in the locking block 61 through the thread structure.

[0068] It is easy to understand that when cooperating with the positioning member 4 of the first part of the bottom side beam 111, the positioning square tube 5 passes through the positioning member 4 along the transverse through hole of the positioning member 4, and the distance between the two positioning blocks 64 on the T-shaped positioning plate 62 is the same as the width of the first main beam 1121; when cooperating with the positioning member 4 of the second part of the bottom side beam 111, the positioning square tube 5 passes through the positioning member 4 along the longitudinal through hole of the positioning member 4, and the distance between the two positioning blocks 64 on the T-shaped positioning plate 62 is the same as the width of the second main beam 1122.

[0069] More preferably, the transverse through holes are arranged along the axis of the length direction of the fixing portion 41 , and the longitudinal through holes are arranged along the axis of the width direction of the fixing portion 41 .

[0070] First weld the bottom main beam 112, and then weld the vertical support 113. Take welding a first main beam 1121 as an example. The cooperation method of the positioning plate and the positioning member 4 is: when welding the bottom main beam 112, first place the two bottom side beams 111 in parallel, so that the distance between the two bottom side beams 111 is close to the length of the first main beam 1121, install the positioning members 4 on the two bottom side beams 111, put the locking block 61 between the two opposite positioning members 4, and pass the positioning square tube 5 through the positioning member 4, the locking block 61 and the other positioning member 4 in turn, so that the locking block 61 is above the two bottom side beams 111, and the T-shaped positioning plate 62 is placed with the positioning member 4. And multiple guide rods 63 move upward from the bottom of the two bottom side beams 111, so that the multiple guide rods 63 are respectively inserted into the guide holes of the locking block 61 until the two ends of the T-shaped positioning plate 62 abut against the bottom surfaces of the two bottom side beams 111, limiting the T-shaped positioning plate 62 from continuing to rise, and then lock the guide rods 63 and the locking block 61; place the first main beam 1121 between the two positioning blocks 64 of the T-shaped positioning plate 62, adjust the two bottom side beams 111 so that the two bottom side beams 111 abut against the two ends of the first main beam 1121, and then weld them; after welding is completed, remove the positioning square tube 5 and the locking mechanism 6, and then weld the vertical support 113.

[0071] It is easy to understand that the welding operation of the bottom bracket 11 is generally carried out on a bench, that is, there is still space under the bottom surface of the bottom bracket 11. The T-shaped positioning plate 62 actually provides a plane for placing the bottom main beam 112. Since the position of the T-shaped positioning plate 62 between the bottom side beams 111 is fixed, after the bottom main beam 112 is placed between the two positioning blocks 64, the position of the bottom main beam 112 between the two bottom side beams 111 is also uniquely determined. Therefore, in the present invention, the structure formed by the connection between the bottom main beam 112 and the bottom side beam 111 is uniquely determined, thereby realizing standardized production of the bottom bracket 11.

[0072] When the second main beam 1122 is an angle steel, since the height of the positioning block 64 of the T-shaped positioning plate 62 is greater than the height of the angle steel, the angle steel can be positioned between the two positioning blocks 64 without tilting the angle steel.

[0073] It is easy to understand that gaps are left between the short sides of the T-shaped positioning plate 62 and the bottom side beams 111 on both sides to facilitate welding of the bottom main beam 112 and the bottom side beams 111 .

[0074] In the present invention, the side bracket 12 is formed by independent welding, and then aligned with one end of the bottom bracket 11 and the two are welded and fixed. The present invention does not limit the production of the side bracket 12.

[0075] like Figure 4-5 As shown, the fuel tank assembly 3 includes a fuel tank body 31, which is positioned between adjacent first and second upright supports 1131, 1132. The length of the fuel tank body 31 is greater than the distance between adjacent first and second upright supports 1131, 1132, and the width of the fuel tank body 31 is greater than the distance between the adjacent second upright supports 1132. The width of the fuel tank body 31 is less than the distance between the adjacent first upright supports 1131, and the width of the fuel tank body 31 is greater than the minimum distance between the two bottom side beams 111. In other words, the fuel tank body 31 is supported by the bottom side beam 111 and the bottom main beam 112 and restrained by the first upright supports 1131. The fuel tank body 31 can be pulled outward or inward along the bottom side beam 111 along the first portion of the bottom side beam 111. Therefore, during manufacturing, the fuel tank body 31 does not need to be welded to the base assembly 1, which facilitates a weight-saving design for the frame structure.

[0076] Furthermore, along the length direction of the tank body 31, pull rings are provided on the front and rear sides of the tank body 31 to facilitate pulling the tank in between the base assembly 1 and the upper cover assembly 2 and pulling the tank out from between the base assembly 1 and the upper cover assembly 2.

[0077] It is easy to understand that the first main beam 1121 , the second main beam 1122 and the top surface of the bottom side beam 111 are in the same plane, thereby providing sufficient support for the tank body 31 .

[0078] As shown in the figure, the upper cover assembly 2 includes a top bracket 21 and an upper cover plate 22. The upper cover plate 22 is fixedly mounted on the top bracket 21. The top bracket 21 includes a top side beam 211 and a top main beam 212. The two top side beams 211 are parallel, and multiple top main beams 212 are arranged parallel to the two top side beams 211, and the top main beams 212 are perpendicular to the top side beams 211. The bottom surface of the top side beam 211 is welded to the vertical support 113 of the base assembly 1.

[0079] In order to achieve standardized production of the top bracket 21, the present invention proposes a corresponding positioning method for the processing operation of the top bracket 21, which is as follows:

[0080] The top main beam 212 is a channel steel, and the top side beam 211 is a square tube; multiple auxiliary rods are arranged between the two top side beams 211, and multiple groups of side positioning holes are opened on the top side beam 211 along the length direction of the top side beam 211, and each group of side positioning holes includes four through holes, two of which are on the outer side of the top side beam 211, and two through holes are on the inner side of the top side beam 211, and the through holes on the inner and outer sides are coaxially arranged in pairs. In the same group of positioning holes, the straight line where the two through holes on the outer side or the inner side are located is parallel to the height direction of the top side beam 211, and every two auxiliary rods pass through a group of positioning holes in a top side beam 211. The auxiliary rods connect the two top side beams 211 to form a whole, and then the inner side of the top main beam 212 is pressed against the auxiliary rod to achieve positioning, and the positions of the two top side beams 211 are adjusted so that the top side beam 211 is abutted against the top main beam 212, and then welding is performed. After welding is completed, the auxiliary rod can be taken out from the top side beam 211.

[0081] It is easy to understand that in the same top side beam 211 , the number of groups of positioning holes is the same as the number of top main beams 212 , and the number of auxiliary rods is twice the number of top main beams 212 .

[0082] Since the top main beam 212 is a channel steel, its inner side has three surfaces, and the side opening of the top main beam 212 is consistent with the length direction of the top side beam 211, the top main beam 212 can be positioned by clinging to the two auxiliary rods on the side.

[0083] Furthermore, an auxiliary block is provided between the two top side beams 211. When the auxiliary rod passes through the two top side beams 211, it also passes through the auxiliary block located between the two top side beams 211. At this point, the inner wall of the top main beam 212 abuts against the auxiliary block, and the top surface of the portion of the top main beam 212 above the auxiliary block is flush with the top surface of the top side beams 211. The auxiliary block assists in securing the top main beam 212. After welding the top bracket 21, the auxiliary rod is removed, and at the same time, the auxiliary block is separated from the top main beam 212.

[0084] The top main beam 212 and the top side beam 211 are provided with a plurality of wiring members along their length direction. The wiring members are angle steels and are welded and fixed to the top main beam 212 or the top side beam 211 .

[0085] The top bracket 21 and the base assembly 1 are positioned by aligning the top bracket 21 with one end of the bottom bracket 11 , and then welding the top bracket 21 to the top end of the vertical support 113 to fix them.

[0086] A waste oil tank 221 and a fuel tank hole 222 are provided in the upper cover plate 22 . The fuel tank hole 222 is located above the fuel tank body 31 . The waste oil tank 221 is formed by stamping to avoid the risk of oil leakage.

[0087] The upper cover plate 22 and the top bracket 21 are fixed by bolt structure or by welding. When the upper cover plate 22 and the top bracket 21 are fixed by bolt structure, the upper cover plate 22 and the top main beam 212 of the top bracket 21 are fixed by bolt structure.

[0088] In the present invention, other components of the frame structure, such as the lifting ears, are directly welded and fixed, and the present invention does not impose any limitation thereto.

[0089] It should be noted that the through holes of the base assembly 1 and the upper cover assembly 2 of the present invention are accurately punched by equipment, so when combined with the corresponding positioning parts 4 or auxiliary rods, consistency of welding positions and standardized production can be achieved.

[0090] The present invention makes extensive use of steel components such as square tubes, flat tubes, channel steels, angle steels, etc., which effectively reduces the weight of the frame structure to achieve a weight reduction effect.

[0091] The present invention is suitable for manual welding and also for automatic welding by a robot. For example, when welding the base assembly 1, after the top main beam 212 and the vertical support 113 are positioned by the positioning member 4 and the locking mechanism 6, automatic welding is performed by a robot.

[0092] The embodiments provided by the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A processing technology for a weight-reducing frame structure, characterized in that: The weight-reducing frame structure comprises an upper cover assembly (2), a base assembly (1) and an oil tank assembly (3), wherein the upper cover assembly (2) is arranged above the base assembly (1), and the oil tank assembly (3) is located between the upper cover assembly (2) and the base assembly (1); The base assembly (1) comprises a bottom bracket (11), a side bracket (12) and a vertical support (113); the side bracket (12) is arranged on the outside of the bottom bracket (11); the vertical support (113) is arranged on the bottom bracket (11); and the fuel tank assembly (3) is arranged on the bottom bracket (11) and is confined within the vertical support (113); The bottom bracket (11) comprises a bottom side beam (111) and a bottom main beam (112), the two bottom side beams (111) are parallel, a plurality of bottom main beams (112) are arranged in parallel in the two bottom side beams (111), and the bottom main beam (112) is perpendicular to the bottom side beam (111), the bottom side beam (111) is a square tube, the bottom main beam (112) is one or more of a square tube, an angle steel and a channel steel, and the vertical support (113) is one or both of a flat tube and a channel steel; The upper cover assembly (2) includes a top bracket (21) and an upper cover plate (22), the upper cover plate (22) is fixedly sleeved on the top bracket (21), the top bracket (21) includes a top side beam (211) and a top main beam (212), the two top side beams (211) are parallel, a plurality of top main beams (212) are arranged in parallel in the two top side beams (211), and the top main beams (212) are perpendicular to the top side beams (211), the bottom surface of the top side beam (211) is fixedly connected to the vertical support (113), the top side beam (211) is a square tube, and the top main beam (212) is a channel steel; The processing technology includes welding the bottom side beam (111) and the vertical support (113) as follows: A positioning member (4) is provided between the bottom side beam member (111) and the vertical support member (113), the positioning member (4) comprising a fixing portion (41) and a pin (42), the fixing portion (41) being in the shape of a rectangular parallelepiped, two pins (42) being vertically provided on the bottom surface of the fixing portion (41) along the length direction of the bottom surface of the fixing portion (41), the length of the fixing portion (41) being equal to the width or length of the horizontal cross section inside the vertical support member (113), a cross hole being provided on the side surface in the length direction of the positioning member (4), the cross hole being formed by a transverse connecting hole (43) and a longitudinal connecting hole (44); Along the length direction of the bottom side beam (111), a plurality of groups of main positioning holes are provided on the top surface of the bottom side beam (111), each group of main positioning holes includes two through holes, and on the same bottom side beam (111), the number of groups of main positioning holes is the same as the number of vertical support members (113) on the bottom side beam (111), and the through holes are connected to the internal space of the bottom side beam (111), and the two through holes of each group of main positioning holes are adapted to the two pins (42) of the positioning member (4); Before welding, a plurality of positioning members (4) are sequentially inserted into the top surface of the bottom side beam member (111), and the vertical support members (113) are inserted outside the positioning members (4) at corresponding positions, and the vertical support members (113) are moved until the positioning members (4) abut against the inner side surfaces of the vertical support members (113) to achieve positioning, and welding is performed after the vertical support members (113) and the positioning members (4) are kept in abutment and positioned, and the positions of all the vertical support members (113) after welding are accurately confirmed, and finally the positioning members (4) are removed; The processing technology also includes welding the bottom side beam (111) and the bottom main beam (112); A positioning square tube (5) and a locking mechanism (6) are provided between the two bottom side beams (111); the transverse communicating hole (43) and the longitudinal communicating hole (44) of the positioning member (4) are both square holes and are adapted to the shape of the positioning square tube (5); the locking mechanism (6) comprises a locking block (61), a guide rod (63) and a T-shaped positioning plate (62); the locking block (61) is provided with a horizontally penetrating docking square hole; the positioning square tube (5) penetrates the locking block (61); the T-shaped positioning plate (62) comprises a first plate perpendicular to the bottom side beam (111) and a second plate parallel to the bottom side beam (111); along the length direction of the bottom side beam (111), the first plate of the T-shaped positioning plate (62) The length is greater than the minimum distance between the two bottom side beams (111); the length of the second plate of the T-shaped positioning plate (62) is greater than the width of the bottom main beam (112); the width of the second plate is less than the minimum distance between the two bottom side beams (111); the top ends of the plurality of guide rods (63) pass through the locking block (61) from bottom to top and are locked; the bottom ends of the plurality of guide rods (63) are respectively fixedly connected to the front and rear ends of the second plate of the T-shaped positioning plate (62); the second plate of the T-shaped positioning plate (62) is provided with two positioning blocks (64); the distance between the two positioning blocks (64) is the same as the width of the bottom main beam (112); and the height of the positioning blocks (64) is greater than the height of the bottom main beam (112); The bottom main beam (112) is welded first, and then the vertical support (113) is welded as follows: When the bottom main beam (112) needs to be welded, the two bottom side beams (111) are first placed in parallel so that the distance between the two bottom side beams (111) is close to the length of the first main beam (1121), the positioning pieces (4) are installed on the two bottom side beams (111), and the locking block (61) is placed between the two opposite positioning pieces (4), the positioning square tube (5) passes through the positioning piece (4), the locking block (61) and another positioning piece (4) in sequence so that the locking block (61) is located above the two bottom side beams (111), the T-shaped positioning plate (62) and the plurality of guide rods (63) are moved upward from the bottom of the two bottom side beams (111), so that the plurality of guide rods (63) respectively pass through the locking block (61) until the two ends of the T-shaped positioning plate (62) abut against the bottom surfaces of the two bottom side beams (111), thereby limiting the T-shaped positioning plate (62) from continuing to rise, and then the guide rods (63) and the locking block (61) are locked; The main beam is placed between the two positioning blocks (64) of the T-shaped positioning plate (62), and the two bottom side beams (111) are adjusted so that the two bottom side beams (111) are respectively in contact with the two ends of the first main beam (1121), and then welding is performed; after welding is completed, the positioning square tube (5) and the locking mechanism (6) are removed, and then the vertical support member (113) is welded; The processing technology also includes welding the top side beam (211) and the top main beam (212) as follows: A plurality of auxiliary rods are arranged between the two top side beams (211), and a plurality of side positioning holes are provided on the top side beams (211) along the length direction of the top side beams (211). Each group of side positioning holes includes four through holes, wherein two through holes are located on the outer side of the top side beams (211), and two through holes are located on the inner side of the top side beams (211). The through holes on the inner and outer side are coaxially arranged in pairs. In the same group of positioning holes, the straight line between the two through holes located on the outer side or the inner side is aligned with the top side beam. The height direction of the top beam (211) is parallel, and each two auxiliary rods pass through a group of positioning holes in a top beam (211). The auxiliary rods connect the two top beams (211) to form a whole. Then, one side of the top main beam (212) is pressed against the auxiliary rods to achieve positioning. The positions of the two top beams (211) are adjusted so that the top beam (211) and the top main beam (212) are abutted. Then, welding is performed. After welding is completed, the auxiliary rods are taken out from the top beam (211).

2. The processing technology of the weight-reducing frame structure according to claim 1 is characterized in that: The bottom main beam (112) comprises a first main beam (1121) and a second main beam (1122); the front and rear ends of the two bottom side beams (111) are connected and fixed by the first main beam (1121); along the length direction of the bottom side beam (111), the bottom side beam (111) is divided into a first part and a second part; in the first part of the bottom side beam (111), a plurality of first main beams (1121) are arranged in parallel; in the second part of the bottom side beam (111), a plurality of second main beams (1122) are arranged in parallel; and the oil tank assembly (3) is arranged on the second main beam (1122).

3. The processing technology of the weight-reducing frame structure according to claim 2, characterized in that: The vertical support member (113) includes a first vertical support member (1131) and a second vertical support member (1132). Along the length direction of the bottom side beam member (111), in the first part of the bottom side beam member (111), a plurality of first vertical supports (1131) are vertically arranged on the top surface of the bottom side beam member (111); along the length direction of the bottom side beam member (111), a plurality of second vertical supports (1132) are vertically arranged on the top surface of the bottom side beam member (111); and the oil tank assembly (3) is located between the second vertical supports (1132).

4. The processing technology of the weight-reducing frame structure according to claim 3, characterized in that: The oil tank assembly (3) includes an oil tank body (31), and the oil tank body (31) is placed between adjacent first upright supports (1131) and second upright supports (1132), wherein the length of the oil tank body (31) is greater than the distance between the adjacent first upright supports (1131) and second upright supports (1132), and the width of the oil tank body (31) is greater than the distance between the second upright supports (1132) on both sides, the width of the oil tank body (31) is less than the distance between the first upright supports (1131) on both sides, and the width of the oil tank body (31) is greater than the minimum distance between the two bottom side beams (111).

5. The processing technology of the weight-reducing frame structure according to claim 3, characterized in that: The bottom side beam (111) is a square tube, the first main beam (1121) is a square tube, the second main beam (1122) is an angle steel and / or a channel steel, the first vertical support (1131) is a flat tube, and the second vertical support (1132) is a channel steel.

6. The processing technology of the weight-reducing frame structure according to claim 1, characterized in that: A waste oil tank (221) and an oil tank hole (222) are provided in the upper cover plate (22); the oil tank hole (222) is located above the oil tank body (31); and the waste oil tank (221) is formed by stamping.

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