CN110733523B - End beam and lower hinged mounting base structure of low-floor tramcar floating car - Google Patents
End beam and lower hinged mounting base structure of low-floor tramcar floating car Download PDFInfo
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- CN110733523B CN110733523B CN201911025628.6A CN201911025628A CN110733523B CN 110733523 B CN110733523 B CN 110733523B CN 201911025628 A CN201911025628 A CN 201911025628A CN 110733523 B CN110733523 B CN 110733523B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F1/00—Underframes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/20—Communication passages between coaches; Adaptation of coach ends therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F1/00—Underframes
- B61F1/08—Details
- B61F1/10—End constructions
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Abstract
The invention discloses a low-floor tramcar floating end beam and lower hinged mounting seat structure, which comprises an end beam and a hinged mounting seat arranged in the center of the rear end of the end beam, wherein two bilaterally symmetrical workshop shock absorption mounting seats are arranged on the end beam, and bilaterally symmetrical rotation stop stops are arranged on two sides of the hinged mounting seat; the end beam is formed by welding a main section and an auxiliary section in front and back, the main section and the auxiliary section are both of hollow structures, and rib plates for increasing rigidity and strength are arranged in the main section and the auxiliary section; the hinged mounting seat is internally provided with a trapezoidal hollow part, and reinforcing ribs are arranged in the trapezoidal hollow part. The end beam and the lower hinged mounting seat of the low-floor tramcar floating car have the advantages of good structural strength performance, simple structure, convenience in manufacturing and maintenance and low cost, and the lightweight design of the structure is ensured on the premise of meeting the bearing capacity; the unique arrangement form of the end beam, the hinged mounting seat, the rotary stop and the workshop damping mounting seat meets the requirements of stability and comfort of vehicle operation.
Description
Technical Field
The invention relates to the field of low-floor tramcars, in particular to a floating end beam and lower hinged mounting base structure of a low-floor tramcar.
Background
In order to meet the requirement of passing through a small-radius curve, modern low-floor tramcars adopt the design scheme of short car body modules, and the modules are connected through a hinge mechanism. The end beam and the hinged mounting seat are required to bear longitudinal force, transverse force, vertical force and corresponding torsional load generated in the running process of the vehicle, and the forces are transmitted to another section of vehicle through the hinged mechanism. Meanwhile, the vehicle can smoothly and quickly pass through a small-radius curve by restraining and releasing the degree of freedom among vehicle modules, and the smooth and stable running of the vehicle is ensured, so that the end beam and the hinged mounting seat are key parts of the low-floor tramcar. The end beam and the hinged mounting seat are both carbon steel welding structures.
However, in the existing low-floor tramcar, the end beam of the mounting base for lifting and mounting the hinge mechanism bears the complex dynamic load of the hinge mechanism, the stress of the hinge mechanism is large, and the force is directly transmitted to the mounting base and the end beam of the hinge mechanism without a buffering energy-absorbing device, so that the stress of the mounting base and the end beam of the hinge mechanism is large. If the design of the installation seat and the end beam is unreasonable, the potential safety hazard that the end part of the vehicle body and the hinged seat are cracked until being damaged can be caused, so that the strong bearing capacity of the installation seat and the end beam is a condition which needs to be met.
In the running process of the vehicle, the axle weight of the vehicle is strictly required, so that under the condition of meeting the strength of the vehicle body, the end beam and the hinged mounting seat are required to be designed in a light weight mode, and meanwhile, the structure of the vehicle is required to be simple, the vehicle is convenient to manufacture, and the cost requirement is met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a structure of an end beam and a lower hinged mounting seat of a low-floor tramcar floating body, which can meet various load requirements generated when the low-floor tramcar runs, meet hinged connection, have light weight design and simple structure and are convenient to manufacture.
In order to solve the technical problems, the invention is realized by the following technical scheme: a low-floor tramcar floating car end beam and lower part hinged mounting seat structure comprises an end beam and a hinged mounting seat arranged in the center of the rear end of the end beam, wherein a workshop damping mounting seat is respectively arranged on the left side and the right side of the hinged mounting seat on the end beam, the two workshop damping mounting seats are bilaterally symmetrical by taking the hinged mounting seat as the center, and two rotation stop gears which are bilaterally symmetrical by taking the center of the hinged mounting seat are arranged on the hinged mounting seat; the end beam is formed by welding a main section bar in a rectangular structure and an auxiliary section bar in a rectangular structure in a front-back splicing manner, wherein the main section bar and the auxiliary section bar are both aluminum sections; the main section bar is internally provided with a main pipe cavity communicated with the outside of the left end and the right end of the main section bar, the main pipe cavity is of a rectangular structure, the upper end of the corresponding main section bar forms a main upper cover plate, the lower end of the corresponding main section bar forms a main lower cover plate, the front end of the corresponding main section bar forms a front end beam plate, the rear end of the corresponding main section bar forms a rear end beam plate, the hinged mounting seat and the workshop damping mounting seat are riveted on the rear end beam plate, the front ends of the main upper cover plate and the main lower cover plate extend to the outside of the front end beam plate, and the extending ends; the auxiliary section bar is internally provided with an auxiliary tube cavity communicated with the outsides of the left end and the right end of the auxiliary section bar, the auxiliary tube cavity is of a rectangular structure, the upper end of the corresponding auxiliary section bar forms an auxiliary upper cover plate, the lower end of the auxiliary upper cover plate forms an auxiliary lower cover plate, the front end of the auxiliary upper cover plate forms a front end plate, the rear end of the auxiliary upper cover plate forms a rear end plate, the front ends of the auxiliary upper cover plate and the auxiliary lower cover plate extend to the outside of the front end plate, the extension ends form an auxiliary plug with the same structure as the main plug, the rear ends of the auxiliary upper cover plate and the auxiliary lower cover plate extend to the outside of the rear end plate, the extension ends form a plugging; the hinge mounting seat is made of carbon steel and consists of a front hinge mounting plate, a trapezoidal upper cover plate, a trapezoidal lower cover plate, an end plate and two side plates; the front hinged mounting plate and the end plate are same in height and are both rectangular structures, the end plate is vertically riveted on the back end beam plate, and the front hinged mounting plate is vertically parallel to the end plate and is aligned with the upper height and the lower height of the end plate; the upper end of the side plate is fixedly welded with the end part of the front hinged mounting plate, the rear end of the side plate is fixedly welded with the surface of the end plate, the two side plates are symmetrical to each other, the two rotation stopping steps are respectively riveted on the two side plates, and the hinged mounting seat consisting of the front hinged mounting plate, the trapezoidal upper cover plate, the trapezoidal lower cover plate and the two side plates internally forms a trapezoidal hollow.
Preferably, the center of the main cavity is vertically provided with a vertical rib plate along the left-right direction, the vertical rib plate divides the main cavity into a front independent cavity and a rear independent cavity, the center of the rear cavity is longitudinally provided with a longitudinal rib plate connecting the vertical rib plate and the rear end beam plate along the left-right direction, the longitudinal rib plate divides the rear cavity into an upper independent cavity and a lower independent cavity which are the same, and the formed front cavity and the upper cavity and the lower cavity are in an inverted-product-shaped structure; the front cavity, the upper cavity and the lower cavity are internally provided with main inclined ribs, the two main inclined ribs in the front cavity are vertically symmetrical and are of a structure in a shape of 'phi', the main inclined ribs in the upper cavity and the lower cavity are respectively provided with one main inclined rib, the main inclined ribs are vertically symmetrical and are of a structure in a shape of 'phi', and the four main inclined ribs in the front cavity, the upper cavity and the lower cavity form end faces of a diamond structure; the length and width of the main section bar are 326mm x 120mm, the thickness of the part, corresponding to the upper cavity, of the main upper cover plate is 10mm, the thickness of the part, corresponding to the front cavity, of the main upper cover plate is 8mm, the thickness of the part, corresponding to the lower cavity and the front cavity, of the main lower cover plate is 10mm, the thickness of the front-end beam plate is 5mm, the thickness of the rear-end beam plate is 13mm, the thickness of the vertical rib plate is 7mm, the longitudinal rib plate takes the joint with the main diagonal rib as a node, the thickness of the part, between the rear-end beam plate and the main diagonal rib, of the longitudinal rib plate is 10mm, the thickness of the part, between the main diagonal rib and the vertical rib plate, of the main diagonal rib is 3.
Preferably, two inner end plates which are parallel to the front end plate and the rear end plate are vertically arranged in the auxiliary pipe cavity along the left-right direction of the auxiliary pipe cavity, the auxiliary pipe cavity is divided into a front cavity, a middle cavity and a rear cavity by the inner end plates, auxiliary oblique ribs which are symmetrical to each other are arranged in the rear cavity and the middle cavity, and the two auxiliary oblique ribs form the end surface of a herringbone structure; the length and width dimension of vice section bar is 286mm 120mm, and wherein the thickness of front end plate, rear end plate and inner end plate is 5mm, the position thickness that corresponds back cavity and well cavity on the vice upper cover plate is 7mm, and the position thickness that corresponds preceding cavity is 6mm, the position thickness that corresponds back cavity and well cavity on the vice apron down is 7mm, and the position thickness that corresponds preceding cavity is 6mm, the thickness of vice diagonal rib is 3 mm.
Preferably, a transition plate is arranged at the bottom of the joint of the main lower cover plate and the trapezoidal lower cover plate, the thickness of the transition plate is 4mm, and the bottom of the hinged mounting seat and the bottom of the end beam are fixedly connected together through two rows of rivets.
Preferably, two triangular lightening holes with the same structure and size are arranged on the trapezoidal upper cover plate and the trapezoidal lower cover plate, wherein a rectangular lightening hole is further arranged between the two triangular lightening holes on the trapezoidal upper cover plate, the length and width of the rectangular lightening hole is 240mm x 100mm, the triangular lightening hole is in a right-angled triangular structure, and the length of two right-angled sides of the triangular lightening hole is 70mm x 90 mm.
Preferably, two longitudinal reinforcing ribs which are vertically and symmetrically arranged are arranged in the trapezoidal hollow cavity of the hinged mounting seat, and a transverse reinforcing rib which is parallel to the trapezoidal upper cover plate and the trapezoidal lower cover plate and the end part of which is connected with the hinged mounting seat is arranged between the two longitudinal reinforcing ribs; the distance between the two longitudinal reinforcing ribs is 270mm, the thickness of the rib plate of the single longitudinal reinforcing rib is 10mm, the width of the transverse reinforcing rib is 20mm, and the thickness of the transverse reinforcing rib is 6 mm.
Preferably, the left end and the right end of the end plate symmetrically extend out of the two side plates, the top of the end plate extends upwards and is higher than the trapezoidal upper cover plate, and the thickness of the extending ends of the left end and the right end of the end plate is 10 mm; the connecting plate is arranged on the main upper cover plate and fixedly welded on the end plate, the connecting plate is perpendicular to the part, higher than the trapezoidal upper cover plate, of the end plate, five reinforcing ribs which are symmetrically arranged left and right are welded on the perpendicular part of the connecting plate and the end plate, the thickness of each reinforcing rib is 8mm, the connecting plate is connected with the end plate and the connecting plate, the thickness of each connecting plate is 10mm, the connecting plates are fixed on the main upper cover plate through four rows of rivets, two rows of bolt groups which are symmetrical up and down are arranged on the extending ends at the two ends of the end plate, and each row of bolt groups are formed by arranging three bolts M20 at equal intervals and are used for riveting the hinged mounting seats on.
Preferably, the thickness of the trapezoidal upper cover plate is 15mm, the thickness of the trapezoidal lower cover plate is 6mm, the thickness of the front hinge mounting plate is 15mm, the thickness of the end plate is 15mm, the thickness of the side plate is 4mm, and the base angles of the trapezoidal upper cover plate and the trapezoidal lower cover plate are both 60 °.
Preferably, the rotation stopper is a rectangular square tube with a hollow structure, the length and width of the end face of the square tube are 60mm x 60mm, the thickness of the tube wall is 4mm, the length of the center of the square tube is 203mm, the rotation stopper and the installation plane of the hinge installation seat form an angle of 70 degrees, and the distance between the rotation stopper and the left center and the right center of the end beam is 335 mm.
Preferably, the workshop damping mounting base is of a boss structure and consists of a rectangular base and two bosses which are arranged on the rectangular base in parallel up and down, the length and width of the end face of the rectangular base are 110mm x 130mm, the thickness of the end face of the rectangular base is 6mm, the length, width and height of each boss are 34mm, and the distance between each boss and the left center and the right center of an end beam is 1400 mm.
Compared with the prior art, the invention has the advantages that: the end beam of the low-floor tramcar floating end beam and lower hinged mounting base structure is composed of aluminum profiles with hollow sections and arranged internal reinforcing ribs, the structure is simple, the strength performance is good, the manufacture is convenient, the cost is low, and the lightweight design of the structure is ensured; the hinged mounting seat is of a trapezoidal hollow structure, is reasonable in stress, has the same shape as a load transfer path, is fine and strengthened in structural strength, is simple and reasonable in structure and convenient to maintain, and is provided with a plurality of lightening holes through the optimized design of the structure on the premise of meeting the bearing capacity, so that the dead weight is reduced; the unique arrangement form of the end beam, the hinged mounting seat, the rotary stop and the workshop damping mounting seat meets the requirements of stability and comfort of vehicle operation.
Drawings
FIG. 1 is a schematic view of the external structure of the end beam and lower hinged mounting base structure of a low-floor tramcar floating body according to the present invention;
FIG. 2 is a top structural view of a structure of an end beam and a lower hinged mounting base of a low-floor tramcar floating car according to the present invention;
FIG. 3 is a schematic side view of the end beam and lower hinged mounting base structure of a low-floor tramcar of the present invention;
FIG. 4 is a schematic side view of a first section bar in the end beam and lower hinged mounting base structure of a low-floor tramcar according to the present invention;
FIG. 5 is a schematic side view of a second profile of the end beam and lower hinge mount structure of a low-floor tram floating car according to the present invention.
In the figure: 1. an end beam; 11. a main section bar; 111. a main upper cover plate; 112. a main lower cover plate; 113. a rear end beam panel; 114. a front end beam panel; 115. a main lumen; 116. a vertical rib plate; 117. longitudinal rib plates; 118. a main diagonal rib; 119. a main plug; 12. a secondary section bar; 121. attaching a cover plate; 122. a sub-lower cover plate; 123. a rear end plate; 124. a front end plate; 125. a secondary lumen; 126. an interface; 127. an inner end plate; 128. an auxiliary diagonal rib; 129. a sub-plug; 2. a hinged mounting seat; 21. a front hinged mounting plate; 22. a trapezoidal upper cover plate; 221. triangular lightening holes; 222. rectangular lightening holes; 23. a trapezoidal lower cover plate; 24. a side plate; 25. an end plate; 3. stopping rotation; 4. a workshop damping mounting seat; 5. a transition plate; 6. a connecting plate; 7. and (5) reinforcing ribs.
Detailed Description
The invention is described in detail below with reference to the figures and the detailed description.
In order to solve the above technical problems, as shown in fig. 1, fig. 2 and fig. 3, the present invention is implemented by the following technical solutions: a low-floor tramcar floating car end beam and lower part hinged mounting seat structure comprises an end beam 1 and a hinged mounting seat 2 arranged in the center of the rear end of the end beam 1, wherein a workshop damping mounting seat 4 is respectively arranged on the left side and the right side of the hinged mounting seat 2 on the end beam 1, the two workshop damping mounting seats 4 are bilaterally symmetrical by taking the hinged mounting seat 2 as the center, and two rotation stop gears 3 which are bilaterally symmetrical by taking the center of the hinged mounting seat 2 are arranged on the hinged mounting seat 2; the end beam 1 is formed by welding a main section bar 11 in a rectangular structure and an auxiliary section bar 12 in a rectangular structure in a front-back manner, wherein the main section bar 11 and the auxiliary section bar 12 are both aluminum sections; a main pipe cavity 115 communicated with the outside of the left end and the right end of the main section bar 11 is arranged in the main section bar 11, the main pipe cavity 115 is of a rectangular structure, the upper end of the corresponding main section bar 11 forms a main upper cover plate 111, the lower end of the corresponding main section bar forms a main lower cover plate 112, the front end of the corresponding main section bar forms a front end beam plate 114, the rear end of the corresponding main section bar 11 forms a rear end beam plate 113, the hinged mounting seat 2 and the workshop damping mounting seat 4 are riveted on the rear end beam plate 113, the front ends of the main upper cover plate 111 and the main lower cover plate 112 extend outside the front end beam plate 114, and the extending end forms a; an auxiliary pipe cavity 125 communicated with the outsides of the left end and the right end of the auxiliary section bar 12 is arranged in the auxiliary section bar 12, the auxiliary pipe cavity 125 is of a rectangular structure, the upper end of the corresponding auxiliary section bar 12 forms an auxiliary upper cover plate 121, the lower end of the corresponding auxiliary lower cover plate 122 forms an auxiliary lower cover plate 122, the front end of the corresponding auxiliary upper cover plate 124 and the rear end of the corresponding auxiliary lower cover plate 122 form a rear end plate 123, the front ends of the auxiliary upper cover plate 121 and the auxiliary lower cover plate 122 extend outside the front end plate 124, the extension ends form an auxiliary plug 129 with the same structure as the main plug 119, the rear ends of the auxiliary upper cover plate 121 and the auxiliary lower cover plate 122 extend outside the rear end plate 123, the extension ends form a plug port 126, and the main plug 119 on the main; the hinge mounting base 2 is made of carbon steel and consists of a front hinge mounting plate 21, a trapezoidal upper cover plate 22, a trapezoidal lower cover plate 23, an end plate 25 and two side plates 24; the front hinged mounting plate 21 and the end plate 25 are the same in height and are both rectangular structures, the end plate 25 is vertically riveted on the back end beam plate 113, and the front hinged mounting plate 21 is vertically parallel to the end plate 25 and is aligned with the upper and lower heights of the end plate 25; the upper trapezoidal cover plate 22 and the lower trapezoidal cover plate 23 are of isosceles trapezoid structures, the profile surfaces of the upper trapezoidal cover plate 22 and the lower trapezoidal cover plate 23 are the same, the upper bottoms of the upper trapezoidal cover plate 22 and the lower trapezoidal cover plate 23 are fixedly welded to the upper end and the lower end of the front hinge mounting plate 21 respectively, the lower bottoms of the upper trapezoidal cover plate 22 and the lower trapezoidal cover plate 23 are fixedly welded to the upper end and the lower end of the end plate 25 respectively, the left end and the right end between the upper end and the lower end of the upper trapezoidal cover plate 22 and the lower trapezoidal cover plate 23 are connected together through two side plates 24, the front ends of the side plates 24 are fixedly welded to the end part of the front hinge mounting plate 21, the rear ends of the side plates are fixedly welded to the surface of the end plate 25, the two side plates 24 are symmetrical to each other, the two rotation stoppers 3 are respectively riveted to the two side plates 24, and a; the hinged mounting seat 2 with the trapezoidal hollow structure is welded integrally, is stressed reasonably, and has the advantages of obviously enhanced performance, simple and reasonable structure, low manufacturing cost and convenient maintenance.
In order to meet the strength requirement of the end beam 1, as shown in fig. 4, a vertical rib plate 116 is vertically arranged in the center of the main cavity 115 along the left-right direction of the main cavity, the vertical rib plate 116 divides the main cavity 115 into a front independent cavity and a rear independent cavity, wherein a longitudinal rib plate 117 connecting the vertical rib plate 116 and the rear end beam plate 113 is longitudinally arranged in the center of the rear cavity along the left-right direction of the rear cavity, the longitudinal rib plate 117 divides the rear cavity into an upper independent cavity and a lower independent cavity which are the same, and the formed front cavity and the upper cavity and the lower cavity are in an inverted 'product' -shaped structure; the front cavity, the upper cavity and the lower cavity are internally provided with main inclined ribs 118, the main inclined ribs 118 in the front cavity are provided with two main inclined ribs which are symmetrical up and down and have a structure of ">", the main inclined ribs 118 in the upper cavity and the lower cavity are respectively provided with one main inclined rib and are symmetrical up and down and have a structure of "<", and the four main inclined ribs 118 in the front cavity, the upper cavity and the lower cavity form the end surface of a diamond structure; the length and width of the main section bar 11 is 326mm x 120mm, wherein the thickness of the part of the main upper cover plate 111 corresponding to the upper cavity is 10mm, the thickness of the part of the main upper cover plate corresponding to the front cavity is 8mm, the thickness of the part of the main lower cover plate 112 corresponding to the lower cavity and the front cavity is 10mm, the thickness of the front end beam plate 114 is 5mm, the thickness of the rear end beam plate 113 is 13mm, the thickness of the vertical rib plate 116 is 7mm, the joint of the longitudinal rib plate 117 and the main diagonal rib 118 is a node, the thickness of the part of the longitudinal rib plate 117 between the rear end beam plate 113 and the main diagonal rib 118 is 10mm, the thickness of the part of the longitudinal rib plate 118 between the main diagonal rib 118 and the vertical rib 116 is 7mm, and the thickness of the main diagonal rib 118 is 3 mm. As shown in fig. 5, two inner end plates 127 parallel to the front end plate 124 and the rear end plate 123 are vertically arranged in the secondary cavity 125 along the left-right direction, the secondary cavity 125 is divided into a front cavity, a middle cavity and a rear cavity by the inner end plates 127, wherein the rear cavity and the middle cavity are internally provided with secondary oblique ribs 128 which are symmetrical to each other, and the two secondary oblique ribs 128 form an end face of a herringbone structure; the length and width of the auxiliary section bar 12 is 286mm x 120mm, the thickness of the front end plate 124, the rear end plate 123 and the inner end plate 127 is 5mm, the thickness of the part corresponding to the rear cavity and the middle cavity on the auxiliary upper cover plate 121 is 7mm, the thickness of the part corresponding to the front cavity is 6mm, the thickness of the part corresponding to the rear cavity and the middle cavity on the auxiliary lower cover plate 122 is 7mm, the thickness of the part corresponding to the front cavity is 6mm, and the thickness of the auxiliary inclined rib 128 is 3 mm. Above-mentioned end beam structure has alleviateed the dead weight of end beam 1, and different gusset in aluminum alloy section cross-section have adopted different thickness according to structural strength, rigidity and intensive needs, and simultaneously in order to satisfy the manufacturability requirement, main upper cover plate 111 and main lower cover plate 112 thickness of end beam 1 are inequality, and such design can be under the prerequisite that satisfies end beam 1 intensity and rigidity, realizes the lightweight requirement of end beam 1.
In order to maximally disperse the operation load transmitted by the hinged installation seat 2 and meet the strength requirement of the end beam 1, a transition plate 5 is arranged at the bottom of the joint of the main lower cover plate 112 and the trapezoidal lower cover plate 23, the thickness of the transition plate 5 is 4mm, and the bottom of the hinged installation seat 2 and the bottom of the end beam 1 are fixedly connected through two rows of rivets.
In order to meet the bearing capacity of the hinged mounting seat 2 and simultaneously facilitate the reduction of the weight of the whole structure and achieve the requirement of light weight of products, two triangular lightening holes 221 with the same structure and size are respectively arranged on the trapezoidal upper cover plate 22 and the trapezoidal lower cover plate 23, wherein a rectangular lightening hole 222 is also arranged between the two triangular lightening holes 221 on the trapezoidal upper cover plate 22, the length and width of the rectangular lightening hole 222 are 240mm x 100mm, the triangular lightening hole 221 is in a right-angled triangular structure, and the lengths of two right-angled sides of the triangular lightening hole 221 are 70mm x 90 mm.
In order to ensure that the load generated by the hinging mechanism during the running of the vehicle is uniformly distributed in the hinging mounting seat 2 as much as possible so as to improve the bearing capacity of the hinging mounting seat 2, namely the strength and rigidity requirements of the hinging mounting seat 2 are improved, two longitudinal reinforcing ribs which are vertically and symmetrically arranged are arranged in the trapezoidal hollow cavity of the hinging mounting seat 2, and a transverse reinforcing rib which is parallel to the trapezoidal upper cover plate 22 and the trapezoidal lower cover plate 23 and the end part of which is connected with the hinging mounting seat 2 is arranged between the two longitudinal reinforcing ribs; the distance between the two longitudinal reinforcing ribs is 270mm, the thickness of the rib plate of the single longitudinal reinforcing rib is 10mm, the width of the transverse reinforcing rib is 20mm, and the thickness of the transverse reinforcing rib is 6 mm.
In order to meet the riveting installation and strength requirements of the hinge installation base 2 with a trapezoid structure, the left end and the right end of the end plate 25 symmetrically extend out of the two side plates 24, the top of the end plate extends upwards and is higher than the trapezoid upper cover plate 22, and the thickness of the extending end of the left end and the right end of the end plate 25 is 10 mm; the main upper cover plate 111 is provided with a connecting plate 6, the connecting plate 6 is fixedly welded on the end plate 25 and is perpendicular to the part of the end plate 25 higher than the trapezoidal upper cover plate 22, five reinforcing ribs 7 which are symmetrically arranged left and right are welded on the perpendicular part of the connecting plate 6 and the end plate 25, the thickness of each reinforcing rib 7 is 8mm, the reinforcing ribs are connected with the end plate 25 and the connecting plate 6, the thickness of the connecting plate 6 is 10mm and is fixed on the main upper cover plate 111 through four rows of rivets, two rows of bolt groups which are symmetrical up and down are arranged on the extending ends of the two ends of the end plate 25, and each row of bolt groups are formed by arranging three M20 bolts at equal intervals to rivet the hinge mounting seat 2 on the end beam 1; the above structure can maximally disperse the hinge mount 2.
For the obvious reinforcing of articulated mount pad 2's performance, satisfy the transmission of various loads in the vehicle operation process simultaneously, trapezoidal upper cover plate 22's thickness is 15mm, and trapezoidal lower cover plate 23's thickness is 6mm, and preceding articulated mounting panel 21's thickness is 15mm, and end plate 25's thickness is 15mm, and curb plate 24's thickness is 4mm, trapezoidal upper cover plate 22 and trapezoidal lower cover plate 23's base angle are 60.
In order to meet the requirements of normal running of a vehicle and the running stability of the vehicle, and simultaneously ensure that the rotary stop 3 and the workshop damping mounting seat 4 are simple in structure and convenient to manufacture, and meet the requirements of strength, rigidity and light weight when the vehicle runs, the rotary stop 3 is a rectangular square tube with a hollow structure, the length and width of the end surface of the square tube are 60mm x 60mm, the thickness of the tube wall is 4mm, the center length is 203mm, the rotary stop 3 and the mounting plane of the hinged mounting seat 2 form an angle of 70 degrees, and the distance between the rotary stop 3 and the left center and the right center of the end beam 1 is 335 mm; workshop shock attenuation mount pad 4 is the boss structure, and it comprises rectangle basement and two upper and lower bosses that set up on the rectangle basement side by side, rectangle basement terminal surface length and width size is 110mm 130mm, and thickness is 6mm, the size that the boss length and width is high is 34mm, and its distance apart from the center about end beam 1 is 1400 mm.
The end beam 1 of the low-floor tramcar floating end beam and lower hinged mounting base structure is composed of aluminum profiles with hollow sections and arranged internal reinforcing ribs, the structure is simple, the strength performance is good, the manufacture is convenient, the cost is low, and the lightweight design of the structure is ensured; the hinged mounting seat 2 is of a trapezoidal hollow structure, is reasonable in stress, has the same whole shape as a load transfer path, is fine and strengthened in structural strength, is simple and reasonable in structure and convenient to maintain, and is provided with a plurality of lightening holes through the optimized design of the structure on the premise of meeting the bearing capacity, so that the dead weight is reduced; the unique arrangement forms of the end beam 1, the hinged installation seat 2, the rotary stop 3 and the workshop damping installation seat 4 meet the requirements of stability and comfort of vehicle operation.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a low-floor tram floats end beam and articulated mount pad structure of lower part, includes end beam (1) and sets up at articulated mount pad (2) at end beam (1) rear end center, its characterized in that: the end beam (1) is provided with a workshop damping mounting seat (4) on the left side and the right side of the hinged mounting seat (2), the two workshop damping mounting seats (4) are bilaterally symmetrical by taking the hinged mounting seat (2) as a center, and the hinged mounting seat (2) is provided with two rotation stop gears (3) which are bilaterally symmetrical by taking the center; the end beam (1) is formed by welding a main section bar (11) in a rectangular structure and an auxiliary section bar (12) in a rectangular structure in a front-back manner, wherein the main section bar (11) and the auxiliary section bar (12) are both aluminum sections; the main section bar (11) is internally provided with a main pipe cavity (115) communicated with the outside of the left end and the right end of the main section bar (11), the main pipe cavity (115) is of a rectangular structure, the upper end of the corresponding main section bar (11) forms a main upper cover plate (111), the lower end of the corresponding main section bar forms a main lower cover plate (112), the front end of the corresponding main section bar forms a front end beam plate (114), the rear end of the corresponding main section bar forms a rear end beam plate (113), the hinged mounting seat (2) and the workshop damping mounting seat (4) are riveted on the rear end beam plate (113), the front ends of the main upper cover plate (111) and the main lower cover plate (112) extend to the outside of the front end beam plate (114), and the extending; an auxiliary tube cavity (125) communicated with the outside of the left end and the right end of the auxiliary section bar (12) is arranged in the auxiliary section bar (12), the auxiliary tube cavity (125) is of a rectangular structure, the upper end of the corresponding auxiliary section bar (12) forms an auxiliary upper cover plate (121), the lower end of the corresponding auxiliary section bar forms an auxiliary lower cover plate (122), the front end of the front end plate (124) forms a rear end plate (123), the front ends of the auxiliary upper cover plate (121) and the auxiliary lower cover plate (122) extend to the outside of the front end plate (124), the extending ends form an auxiliary plug (129) with the same structure as the main plug (119), the rear ends of the auxiliary upper cover plate (121) and the auxiliary lower cover plate (122) extend to the outside of the rear end plate (123), the extending ends form a plug port (126), and the main plug (119) on the main section bar (11) is plugged in the plug port (; the hinge mounting base (2) is made of carbon steel and consists of a front hinge mounting plate (21), a trapezoidal upper cover plate (22), a trapezoidal lower cover plate (23), an end plate (25) and two side plates (24); the front hinged mounting plate (21) and the end plate (25) are the same in height and are of rectangular structures, the end plate (25) is vertically riveted on the rear end beam plate (113), and the front hinged mounting plate (21) is vertically parallel to the end plate (25) and is aligned with the upper and lower heights of the end plate (25); the upper trapezoidal cover plate (22) and the lower trapezoidal cover plate (23) are of isosceles trapezoid structures, the outline surfaces of the upper trapezoidal cover plate (22) and the lower trapezoidal cover plate (23) are the same, the upper bottoms of the upper trapezoidal cover plate (22) and the lower trapezoidal cover plate (23) are fixedly welded to the upper end and the lower end of the front hinged mounting plate (21), the lower bottoms of the upper trapezoidal cover plate (22) and the lower trapezoidal cover plate (23) are fixedly welded to the upper end and the lower end of the end plate (25), the left end and the right end between the upper portion and the lower portion of the upper trapezoidal cover plate (22) and the lower trapezoidal cover plate (23) are connected together through the two side plates (24), the front ends of the side plates (24) are fixedly welded to the end portions of the front hinged mounting plate (21), the rear ends of the side plates are fixedly welded to the surface of the end plate (25), the two side plates (24) are symmetrical to each other, the two rotation stopping blocks (3) are respectively, The hinged mounting seat (2) formed by the end plate (25) and the two side plates (24) forms a trapezoidal hollow inside.
2. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: a vertical rib plate (116) is vertically arranged in the center of the main cavity (115) along the left-right direction of the main cavity, the main cavity (115) is divided into a front independent cavity and a rear independent cavity by the vertical rib plate (116), wherein a longitudinal rib plate (117) for connecting the vertical rib plate (116) with a rear end beam plate (113) is longitudinally arranged in the center of the rear cavity along the left-right direction of the rear cavity, the rear cavity is divided into an upper independent cavity and a lower independent cavity by the longitudinal rib plate (117), and the formed front cavity and the upper cavity and the lower cavity are of an inverted-product-shaped structure; the front cavity, the upper cavity and the lower cavity are internally provided with main inclined ribs (118), the two main inclined ribs (118) in the front cavity are vertically symmetrical and have a structure of 'phi', the main inclined ribs (118) in the upper cavity and the lower cavity are respectively provided with one main inclined rib and are vertically symmetrical and have a structure of 'phi', and the four main inclined ribs (118) in the front cavity, the upper cavity and the lower cavity form the end surface of a diamond structure; the length and width of the main section bar (11) are 326mm x 120mm, the thickness of the part, corresponding to the upper cavity, of the main upper cover plate (111) is 10mm, the thickness of the part, corresponding to the front cavity, of the main lower cover plate (112) is 8mm, the thickness of the part, corresponding to the lower cavity and the front cavity, of the main lower cover plate is 10mm, the thickness of the front end beam plate (114) is 5mm, the thickness of the rear end beam plate (113) is 13mm, the thickness of the vertical rib plate (116) is 7mm, the longitudinal rib plate (117) takes the joint with the main diagonal rib (118) as a node, the thickness of the part, between the rear end beam plate (113) and the main diagonal rib (118), of the part, between the main diagonal rib (118) and the vertical rib plate (116), is 7mm, and the thickness of the main diagonal rib (118) is 3 mm.
3. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: two inner end plates (127) which are parallel to the front end plate (124) and the rear end plate (123) are vertically arranged in the auxiliary cavity (125) along the left-right direction of the auxiliary cavity, the auxiliary cavity (125) is divided into a front cavity, a middle cavity and a rear cavity by the inner end plates (127), auxiliary oblique ribs (128) which are symmetrical to each other are arranged in the rear cavity and the middle cavity, and the two auxiliary oblique ribs (128) form an end face of a herringbone structure; the length and width of vice section bar (12) is 286mm 120mm, and wherein the thickness of front end plate (124), rear end plate (123) and interior end plate (127) is 5mm, the position thickness that corresponds back cavity and well cavity on vice upper cover plate (121) is 7mm, and the position thickness that corresponds preceding cavity is 6mm, the position thickness that corresponds back cavity and well cavity on vice apron (122) is 7mm, and the position thickness that corresponds preceding cavity is 6mm, the thickness of vice diagonal rib (128) is 3 mm.
4. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: the bottom of the joint of the main lower cover plate (112) and the trapezoidal lower cover plate (23) is provided with a transition plate (5), the thickness of the transition plate (5) is 4mm, and the bottom of the hinged mounting seat (2) and the bottom of the end beam (1) are fixedly connected together through two rows of rivets.
5. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: two triangular lightening holes (221) with the same structure and size are formed in the trapezoidal upper cover plate (22) and the trapezoidal lower cover plate (23), a rectangular lightening hole (222) is further formed between the two triangular lightening holes (221) in the trapezoidal upper cover plate (22), the length and the width of the rectangular lightening hole (222) are 240mm x 100mm, the triangular lightening hole (221) is of a right-angled triangular structure, and the length of two right-angled sides of the triangular lightening hole is 70mm x 90 mm.
6. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: two longitudinal reinforcing ribs which are vertically and symmetrically arranged are arranged in the trapezoidal hollow cavity of the hinged mounting seat (2), and a transverse reinforcing rib which is parallel to the trapezoidal upper cover plate (22) and the trapezoidal lower cover plate (23) and the end part of which is connected with the hinged mounting seat (2) is arranged between the two longitudinal reinforcing ribs; the distance between the two longitudinal reinforcing ribs is 270mm, the thickness of the rib plate of the single longitudinal reinforcing rib is 10mm, the width of the transverse reinforcing rib is 20mm, and the thickness of the transverse reinforcing rib is 6 mm.
7. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: the left end and the right end of the end plate (25) symmetrically extend out of the two side plates (24), the top of the end plate extends upwards and is higher than the trapezoidal upper cover plate (22), and the thickness of the extending ends of the left end and the right end of the end plate (25) is 10 mm; the connecting plate is characterized in that a connecting plate (6) is arranged on the main upper cover plate (111), the connecting plate (6) is fixedly welded on the end plate (25), the position of the connecting plate, which is higher than the trapezoidal upper cover plate (22), is perpendicular to the end plate (25), five reinforcing ribs (7) which are symmetrically arranged left and right are welded on the perpendicular position of the connecting plate (6) and the end plate (25), the thickness of each reinforcing rib (7) is 8mm, the reinforcing ribs are connected with the end plate (25) and the connecting plate (6), the thickness of the connecting plate (6) is 10mm, the connecting plate is fixed on the main upper cover plate (111) through four rows of rivets, two rows of bolt sets which are symmetrical up are arranged on the extending ends of the two ends of the end plate (25), and each row of bolt sets are formed by arranging three bolts of M20 at equal intervals and are used for riveting the hinged mounting seats.
8. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: the thickness of trapezoidal upper cover plate (22) is 15mm, and the thickness of trapezoidal lower cover plate (23) is 6mm, and the thickness of preceding articulated mounting panel (21) is 15mm, and the thickness of end plate (25) is 15mm, and the thickness of curb plate (24) is 4mm, the base angle of trapezoidal upper cover plate (22) and trapezoidal lower cover plate (23) is 60.
9. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: rotatory backstop (3) are hollow structure's rectangle side pipe, and its terminal surface length and width size is 60mm, and the wall thickness is 4mm, and central length is 203mm, rotatory backstop (3) and articulated mount pad (2) mounting plane become 70 jiaos, and its distance apart from the center about end beam (1) is 335 mm.
10. The low-floor tram end beam and lower hinge mount structure of claim 1, wherein: workshop shock attenuation mount pad (4) are the boss structure, and it comprises rectangle basement and two bosses that set up on the rectangle basement side by side from top to bottom, rectangle basement terminal surface length and width size is 110mm 130mm, and thickness is 6mm, the size that the boss length and width is high is 34mm, and its distance apart from the center about end beam (1) is 1400 mm.
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| CN201911025628.6A CN110733523B (en) | 2019-10-25 | 2019-10-25 | End beam and lower hinged mounting base structure of low-floor tramcar floating car |
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| CN201911025628.6A CN110733523B (en) | 2019-10-25 | 2019-10-25 | End beam and lower hinged mounting base structure of low-floor tramcar floating car |
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| CN110733523B true CN110733523B (en) | 2020-09-01 |
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| CN110667628B (en) * | 2019-10-28 | 2020-09-18 | 中铁高新工业股份有限公司 | Car body chassis and have its tram |
| CN112249073A (en) * | 2020-09-24 | 2021-01-22 | 中车南京浦镇车辆有限公司 | Energy absorption structure of metro vehicle cab |
| CN112171095B (en) * | 2020-09-24 | 2021-12-14 | 中车长春轨道客车股份有限公司 | Shape and position deformation control welding method for underframe floor of motor train unit |
| CN112599904B (en) * | 2020-12-21 | 2023-05-05 | 上海捷新动力电池系统有限公司 | Anti-collision tray frame beam structure of power battery energy storage system and production method thereof |
| CN115158379B (en) * | 2022-08-04 | 2023-05-26 | 中车大连机车车辆有限公司 | Tram steel aluminium mixes ceiling |
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| US6305298B1 (en) * | 1997-06-30 | 2001-10-23 | Amsted Industries Incorporated | Light weight draft sill |
| JP5073979B2 (en) * | 2006-07-13 | 2012-11-14 | 株式会社日立製作所 | Energy absorbing member |
| CN104057969B (en) * | 2014-06-27 | 2016-11-23 | 成都市新筑路桥机械股份有限公司 | A kind of 100% modern city tramcar floats car vehicle body bottom frame |
| CN104787072B (en) * | 2015-03-27 | 2017-05-24 | 中车青岛四方机车车辆股份有限公司 | Low-floor railway vehicle chassis structure |
| CN207579872U (en) * | 2017-11-28 | 2018-07-06 | 通号轨道车辆有限公司 | A kind of modern tram end beam of underframe thereof profile structure and chassis |
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