Aerial work platform chassis structure
By optimizing the chassis structure of the aerial work platform vehicle, increasing the installation space and designing the hydraulic and electrical components, the problem of insufficient space in the existing technology has been solved, achieving more efficient installation of hydraulic and electrical components and adaptability to complex road surfaces.
Patent Information
- Application Number
- CN202210554646.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2042-05-19
AI Technical Summary
The existing aerial work platform chassis has a small internal space, which makes it inconvenient to install hydraulic and electrical components, and it cannot meet the requirements of four-wheel drive, two-turn and swing.
A chassis structure for an aerial work platform vehicle was designed, including parallel longitudinal uprights of the frame, slewing support base plates, front and rear axle support plates, and transverse uprights, forming front and rear grooves and a central open groove, leaving ample installation space. A rear axle box is welded at the rear of the chassis to facilitate the installation of hydraulic electrical components and the walking assembly.
It improves the utilization rate of the chassis's internal space, facilitates the installation of hydraulic and electrical components, enhances the simplicity and strength of the chassis structure, and improves the vehicle's ability to pass through complex road surfaces.
Smart Images

Figure CN114906218B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of aerial work platforms, and particularly relates to a chassis structure of an aerial work platform. BACKGROUND
[0002] The aerial work platform is used to transport personnel, tools and materials to a designated position for work, and the existing chassis structure of the aerial work platform has a small internal space, which is inconvenient for installing hydraulic and electrical components, and the structure cannot meet the requirements of four-wheel drive and two-turning and swinging. In addition, the internal space of the chassis structure of the aerial work platform is small, which is inconvenient for installing hydraulic and electrical components. SUMMARY
[0003] The present application aims to solve the problems of the prior art, and provides a chassis structure of an aerial work platform.
[0004] In order to achieve the above-mentioned purpose, the following technical scheme is adopted: a chassis structure of an aerial work platform, comprising a chassis structure main body, the chassis structure main body comprising two parallel frame longitudinal upright plates, a rotary support seat plate connected to the top of the frame longitudinal upright plate, a rear axle support plate connected to the bottom of the frame longitudinal upright plate, a front axle bottom plate connected to the bottom of the frame longitudinal upright plate, and a frame transverse upright plate a, a frame transverse upright plate b, two frame transverse upright plates c and a frame transverse upright plate d located between the two frame longitudinal upright plates, the frame transverse upright plate a, the frame transverse upright plate b, the two frame transverse upright plates c and the frame transverse upright plate d being sequentially welded between the two frame longitudinal upright plates from front to back, the rotary support seat plate being located between the rear axle support plate and the front axle bottom plate, the frame transverse upright plate b, the frame transverse upright plate c, the front axle bottom plate and the two frame longitudinal upright plates forming a front recess, the front recess being used for connecting a swinging front axle, the two frame transverse upright plates c, the two frame longitudinal upright plates and the rotary support seat plate forming a middle recess with an open bottom surface, the rear axle support plate, the two frame longitudinal upright plates, the frame transverse upright plate c and the frame transverse upright plate d forming a rear recess, and a rear axle box being welded in the rear recess and used for placing a walking assembly to connect a driving wheel.
[0005] Three slots are provided on the frame longitudinal upright plate, which can fix the aerial vehicle during transportation, and can be used as a lifting point when hoisting is required.
[0006] The rotary support seat plate is used for connecting a lower vehicle and a rotary table, and is welded on the two frame longitudinal upright plates, a rotary bearing seat ring and a signal detection plate are welded above the rotary support seat plate, rotary table locking position plates are welded on the front and rear sides of the rotary support seat plate, a middle rotary fork and four rotary lower rib plates are welded on the bottom surface of the rotary support seat plate, screw holes for fixing a sealing plate are provided on the bottom of the rotary lower rib plate, and the rotary lower rib plate is welded between the frame longitudinal upright plate and the frame transverse upright plate c.
[0007] Two front axle longitudinal plates are welded between the frame transverse upright plate a and the frame transverse upright plate b, the front axle longitudinal plate is perpendicular to the frame transverse upright plate a, the opposite sides of the frame transverse upright plate a and the frame transverse upright plate b are welded with the front axle reinforcing ring, the end of the frame transverse upright plate a and the frame transverse upright plate b is connected with the front axle rib plate between the frame longitudinal plate, and the bottom surface of the frame longitudinal plate between the frame transverse upright plate a and the frame transverse upright plate b is welded with the axle swing limiting plate.
[0008] The two frame transverse upright plates c and the frame transverse upright plate b are provided with a first square hole for hydraulic and electrical wiring, and eight round steels a are welded at the edge of the first square hole on the frame transverse upright plate b, and eight round steels b are welded at the edge of the first square hole on the frame transverse upright plate c; the two frame longitudinal plates are welded with a support plate baffle, the support plate baffle is welded on the front axle bottom plate, the top surface of the front axle bottom plate is welded with a support plate upright plate, the support plate upright plate is welded with a valve block mounting plate, the valve block mounting plate is welded with the front axle bottom plate, and the top of the frame longitudinal plate is welded with a plurality of cover plate mounting frames for mounting the fixed cover plate.
[0009] The rear axle box includes two rear axle box upright plates perpendicular to the frame longitudinal plate, the top of the rear axle box upright plate is welded with a rear axle box top plate and two rear axle box upper edge plates, the rear axle box top plate is located between the two rear axle box upper edge plates, and a gap is left between the rear axle box upper edge plate and the rear axle box top plate, the outer side of the rear axle box upper edge plate is welded with a rear axle box side plate, the rear axle box side plate is connected between the two rear axle box upright plates, the bottom of the rear axle box top plate is provided with a rear axle box bottom plate c, the rear axle box bottom plate c is welded between the two rear axle box upright plates, the left and right sides of the rear axle box bottom plate c are respectively connected with an inclined rear axle box bottom plate b, the outer side of the rear axle box bottom plate b is connected with a rear axle box bottom plate a, the two rear axle box bottom plates a, the two rear axle box bottom plates b and the rear axle box bottom plate c are connected to form the bottom of the rear axle box, the end of the rear axle box upright plate is located outside the chassis structure main body, and the rear axle box upright plate located outside the chassis structure main body is provided with a second square hole for convenient maintenance and maintenance.
[0010] The top surface of the rear axle box top plate is provided with a third square hole, and the edge of the third square hole is also welded with eight round steels a.
[0011] The bottom surface of the rear axle support plate is welded with two rear axle support plate reinforcing ribs, and the end of the rear axle support plate reinforcing rib is connected with the frame longitudinal plate.
[0012] 8 round steels a are installed at the edge of the first square hole of the transverse vertical plate b of the frame, and every 4 round steels are connected to form a square along the edge of the first square hole, and the two squares are welded on the two sides of the transverse vertical plate b of the frame respectively; 8 round steels b are installed at the edge of the first square hole of the transverse vertical plate c of the frame, and every 4 round steels are connected to form a square along the edge of the first square hole, and the two squares are welded on the two sides of the transverse vertical plate c of the frame respectively; 8 round steels a are installed at the edge of the third square hole of the top plate of the rear axle box, and every 4 round steels are connected to form a square along the edge of the third square hole, and the two squares are welded on the top surface and the bottom surface of the top plate of the rear axle box respectively.
[0013] The beneficial effects of the present application are: the rear axle box is welded at the tail of the chassis, which is convenient for placing the walking assembly; a large space is reserved in the chassis, which is convenient for installing hydraulic and electrical components; the overall structure is more simple and reasonable, which saves materials on the basis of meeting the strength requirements; the middle groove at the bottom of the chassis can avoid the high-altitude vehicle from being stuck when passing through the high-landform, and improve the adaptability of the whole vehicle to complex road conditions. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a structural schematic diagram of the present application;
[0015] Fig. 2 It is a bottom schematic diagram of the present application;
[0016] In the figure: 1 is a longitudinal vertical plate of the frame; 2 is a transverse vertical plate a of the frame; 3 is a front axle rib plate; 4 is a longitudinal vertical plate of the front axle; 5 is a transverse vertical plate b of the frame; 6 is a rotary support seat plate; 7 is a middle return fork; 8 is a rotary bearing seat ring; 9 is a transverse vertical plate c of the frame; 10 is a front axle bottom plate; 11 is a cover plate mounting frame; 12 is a rear axle box vertical plate; 13 is a rear axle box bottom plate a; 14 is a rear axle box side plate; 15 is a rear axle box top plate; 16 is a rear axle box upper edge plate; 17 is a round steel a; 18 is a transverse vertical plate d of the frame; 19 is a round steel b; 20 is a rotary lower rib plate; 21 is a signal detection plate; 22 is a valve block mounting plate; 23 is a front axle reinforcing ring; 24 is a swing oil cylinder mounting seat plate; 25 is a vehicle axle swing limiting plate; 26 is a stop block mounting plate; 27 is a stop block reinforcing rib; 28 is a support plate vertical plate; 29 is a rear axle support plate; 30 is a support plate baffle; 31 is a rear axle support plate reinforcing rib; 32 is a rear axle box bottom plate b; 33 is a rear axle box bottom plate c; 34 is a turntable locking position plate;
[0017] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION
[0018] The present application will be further described below in combination with the drawings and embodiments:
[0019] As Figs. 1-2As shown, a high-altitude vehicle chassis structure includes a chassis structure main body, the chassis structure main body includes two parallel frame longitudinal upright plates 1, a rotary support seat plate 6 connected to the top of the frame longitudinal upright plate 1, a rear axle support plate 29 connected to the bottom of the frame longitudinal upright plate 1, a front axle bottom plate 10 connected to the bottom of the frame longitudinal upright plate 1, and a frame transverse upright plate a2, a frame transverse upright plate b5, two frame transverse upright plates c9, and a frame transverse upright plate d18 located between the two frame longitudinal upright plates 1, the rotary support seat plate 6 is located between the rear axle support plate 29 and the front axle bottom plate 10, the structure of the chassis structure main body reserves a lot of space under the premise of ensuring strength, not only saves materials and reduces costs, but also improves production efficiency.
[0020] The frame transverse upright plate b5, the frame transverse upright plate c9, the front axle bottom plate 10 and the two frame longitudinal upright plates 1 form a front recess, the front recess is used to connect the swing front axle, the two frame transverse upright plates c9, the two frame longitudinal upright plates 1 and the rotary support seat plate 6 form a bottom opening middle recess, which can avoid the high-altitude vehicle from being stuck when passing through a raised terrain, and improve the adaptability of the whole vehicle to complex road conditions; the rear axle support plate 29, the two frame longitudinal upright plates 1, the frame transverse upright plate c9 and the frame transverse upright plate d18 form a rear recess, a rear axle box is welded in the rear recess, which is used to place a walking assembly to connect the drive wheels, and three slot holes are arranged on the frame longitudinal upright plate 1, which can fix the high-altitude vehicle during transportation, and also can be used as a lifting point when hoisting is needed.
[0021] The rotary support seat plate 6 is used to connect the lower vehicle and the rotary table, and is welded on the two frame longitudinal upright plates 1, the rotary support seat plate 6 is welded with a rotary bearing seat ring 8 and a signal detection plate 21 above, the rotary table can be installed and the rotary angle of the rotary table can be monitored; the rotary support seat plate 6 is welded with a rotary table locking plate 34 on the front and rear sides, which can fix the rotary table; the rotary support seat plate 6 is welded with a middle rotary fork 7 and four rotary lower rib plates 20 on the bottom surface, the four rotary lower rib plates 20 can disperse the force applied by the rotary table and telescopic arm of the high-altitude vehicle to the chassis of the high-altitude vehicle, so that the lower vehicle structure is simpler, the bottom of the rotary lower rib plate 20 is provided with a threaded hole for fixing the sealing plate, and the rotary lower rib plate 20 is welded between the frame longitudinal upright plate 1 and the frame transverse upright plate c9.
[0022] Two front axle longitudinal plates 4 are welded between the frame transverse upright plate a2 and the frame transverse upright plate b5, the front axle longitudinal plate 4 is perpendicular to the frame transverse upright plate a2, the opposite sides of the frame transverse upright plate a2 and the frame transverse upright plate b5 are both welded with a front axle reinforcing ring 23, the end of the frame transverse upright plate a2 and the frame transverse upright plate b5 is connected with the frame longitudinal plate 1, the bottom surface of the frame longitudinal plate 1 between the frame transverse upright plate a2 and the frame transverse upright plate b5 is welded with a front axle swing limiting plate 25, and the two front axle swing limiting plates 25 are used for positioning the swing front axle together.
[0023] Two frame transverse upright plates c9 and the frame transverse upright plate b5 are both provided with a No. 1 square hole for hydraulic and electrical wiring, the edge of the No. 1 square hole on the frame transverse upright plate b5 is welded with eight round steels a17, and the edge of the No. 1 square hole on the frame transverse upright plate c9 is welded with eight round steels b19; two support plate baffles 30 are welded between the two frame longitudinal plates 1, the support plate baffle 30 is welded on the front axle bottom plate 10, the top surface of the front axle bottom plate 10 is welded with a support plate upright plate 28, the support plate upright plate 28 is welded with a valve block mounting plate 22, the valve block mounting plate 22 is provided with a traveling valve, the valve block mounting plate 22 is welded with the front axle bottom plate 10, and the top of the frame longitudinal plate 1 is welded with a plurality of cover plate mounting racks 11 for mounting the fixed cover plate.
[0024] The rear axle box includes two rear axle box upright plates 12 which are perpendicular to the frame longitudinal plate 1, the top of the rear axle box upright plate 12 is welded with a rear axle box top plate 15 and two rear axle box upper edge plates 16, the rear axle box top plate 15 is located between the two rear axle box upper edge plates 16, and a gap is left between the rear axle box upper edge plate 16 and the rear axle box top plate 15, the front side of the frame longitudinal plate 1 is provided with a square hole, and the swing oil cylinder mounting seat plate 24 is mounted at the square hole, and the swing oil cylinder mounting seat plate 24 is used for mounting the swing oil cylinder; the front inner side of the frame longitudinal plate 1 is connected with a stop block mounting plate 26, the stop block mounting plate 26 is welded with a stop block reinforcing rib 27, the outer side of the rear axle box upper edge plate 16 is welded with a rear axle box side plate 14, the rear axle box side plate 14 is connected between the two rear axle box upright plates 12, the bottom of the rear axle box top plate 15 is provided with a rear axle box bottom plate c33, the rear axle box bottom plate c33 is welded between the two rear axle box upright plates 12, the left and right sides of the rear axle box bottom plate c33 are respectively connected with an inclined rear axle box bottom plate b32, the outer side of the rear axle box bottom plate b32 is connected with a rear axle box bottom plate a13, the two rear axle box bottom plates a13, the two rear axle box bottom plates b32 and the rear axle box bottom plate c33 are connected to form the bottom of the rear axle box, the end of the rear axle box upright plate 12 is located outside the chassis structure main body, and the rear axle box upright plate 12 located outside the chassis structure main body is provided with a No. 2 square hole for convenient maintenance and repair.
[0025] The top surface of the rear axle box top plate 15 is provided with a No. 3 square hole, and the edge of the No. 3 square hole is also welded with eight round steels a17.
[0026] The bottom surface of the rear axle support plate 29 is welded with two rear axle support plate reinforcing ribs 31, and the end of the rear axle support plate reinforcing rib 31 is connected with the longitudinal vertical plate 1 of the frame.
[0027] 8 round steels a17 are installed at the edge of the first square hole of the frame transverse vertical plate b5, and every 4 round steels are connected to form a square distributed along the edge of the first square hole, and the two squares are welded on the two sides of the frame transverse vertical plate b5 respectively; 8 round steels b19 are installed at the edge of the first square hole of the frame transverse vertical plate c9, and every 4 round steels are connected to form a square distributed along the edge of the first square hole, and the two squares are welded on the two sides of the frame transverse vertical plate c9 respectively; 8 round steels a17 are installed at the edge of the third square hole of the rear axle box top plate 15, and every 4 round steels are connected to form a square distributed along the edge of the third square hole, and the two squares are welded on the top surface and the bottom surface of the rear axle box top plate 15 respectively.
[0028] The rear axle box is welded at the tail of the chassis, and the walking assembly is conveniently placed; a large space is left in the chassis, and hydraulic and electrical components are conveniently installed; the overall structure is more simple and reasonable, material is saved on the basis of meeting the strength requirement; the middle groove of the chassis bottom can avoid the high-altitude vehicle from being stuck when passing through the high-landform, and the adaptability of the whole vehicle to complex road conditions is improved. The overall design structure of the present application is simple, which not only saves materials and reduces costs, but also improves production efficiency.
[0029] In the present application, "No. 1", "No. 2", etc. are only used to distinguish the names of different parts, and do not represent their specifications, nor do they represent their installation order.
[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0031] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0032] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0034] The present application has been described above in conjunction with the accompanying drawings, and it is obvious that the specific implementation of the present application is not limited by the above manner. Any improvement or direct application to other occasions by using the method concept and technical solution of the present application are within the protection scope of the present application.
Claims
1. A chassis structure for an aerial work platform vehicle, characterized in that, The chassis structure includes two parallel longitudinal frame plates (1), a slewing support plate (6) connected to the top of the longitudinal frame plates (1), a rear axle support plate (29) connected to the bottom of the longitudinal frame plates (1), a front axle base plate (10) connected to the bottom of the longitudinal frame plates (1), and a transverse frame plate a (2), a transverse frame plate b (5), two transverse frame plates c (9), and a transverse frame plate d (18) located between the two longitudinal frame plates (1). The transverse frame plates a (2), b (5), c (9), and d (18) are welded from front to back to the two longitudinal frame plates. Between the plates (1), the slewing support plate (6) is located between the rear axle support plate (29) and the front axle bottom plate (10). A front groove is formed between the frame transverse upright plate b (5), the frame transverse upright plate c (9), the front axle bottom plate (10) and the two frame longitudinal upright plates (1). The front groove is used to connect the swing front axle. A middle groove with a bottom opening is formed between the two frame transverse upright plates c (9), the two frame longitudinal upright plates (1) and the slewing support plate (6). A rear groove is formed between the rear axle support plate (29), the two frame longitudinal upright plates (1), the frame transverse upright plate c (9) and the frame transverse upright plate d (18). A rear axle box is welded in the rear groove to place the walking assembly to connect the drive wheels. The slewing support plate (6) is used to connect the lower vehicle and the turntable. It is welded to the two longitudinal upright plates (1) of the frame. The slewing support plate (6) is welded with a slewing support ring (8) and a signal detection plate (21) on the top. The slewing support plate (6) is welded with a turntable locking plate (34) on both the front and rear sides. The bottom surface of the slewing support plate (6) is welded with a center return fork (7) and four slewing lower stiffeners (20). The bottom of the slewing lower stiffeners (20) is provided with threaded holes for fixing the sealing plate. The slewing lower stiffeners (20) are welded between the longitudinal upright plate (1) of the frame and the transverse upright plate c (9) of the frame. Two front axle longitudinal plates (4) are welded between the transverse upright plate a (2) and the transverse upright plate b (5) of the frame. The front axle longitudinal plate (4) is perpendicular to the transverse upright plate a (2) of the frame. Front axle reinforcing rings (23) are welded to the opposite sides of the transverse upright plate a (2) and the transverse upright plate b (5) of the frame. Front axle stiffeners (3) are connected between the ends of the transverse upright plate a (2) and the transverse upright plate b (5) of the frame and the longitudinal upright plate (1) of the frame. An axle swing limiting plate (25) is welded to the bottom surface of the longitudinal upright plate (1) of the frame located between the transverse upright plate a (2) and the transverse upright plate b (5) of the frame. Two transverse uprights c (9) and b (5) of the frame are provided with No. 1 square holes for hydraulic and electrical wiring. Eight round steel bars a (17) are welded to the edge of the No. 1 square hole on the transverse upright b (5) of the frame, and eight round steel bars b (19) are welded to the edge of the No. 1 square hole on the transverse upright c (9) of the frame. A support plate baffle (30) is welded between the two longitudinal uprights (1) of the frame. The support plate baffle (30) is welded to the front axle base plate (10). A support plate upright (28) is welded to the top surface of the front axle base plate (10). A valve block mounting plate (22) is welded to the support plate upright (28). The valve block mounting plate (22) is welded to the front axle base plate (10). Several cover plate mounting brackets (11) for installing and fixing cover plates are welded to the top of the longitudinal uprights (1) of the frame. The rear axle housing includes two rear axle housing uprights (12) perpendicular to the longitudinal uprights (1) of the frame. A rear axle housing top plate (15) and two rear axle housing upper side plates (16) are welded to the top of the rear axle housing uprights (12). A rear axle housing side plate (14) is welded to the outer side of the rear axle housing upper side plate (16). The rear axle housing side plate (14) is connected between the two rear axle housing uprights (12). A rear axle housing bottom plate c (33) is provided below the rear axle housing top plate (15). The rear axle housing bottom plate c (33) is welded between the two rear axle housing uprights (12). The rear axle box bottom plate c (33) is connected to an inclined rear axle box bottom plate b (32) on each side. The rear axle box bottom plate b (32) is connected to the outer side of the rear axle box bottom plate a (13). The two rear axle box bottom plates a (13), the two rear axle box bottom plates b (32) and the rear axle box bottom plate c (33) are connected to form the bottom of the rear axle box. The end of the rear axle box vertical plate (12) is located on the outer side of the chassis structure body, and the rear axle box vertical plate (12) located on the outer side of the chassis structure body is provided with a No. 2 square hole for easy inspection and maintenance.
2. The aerial work platform chassis structure according to claim 1, characterized in that, The longitudinal upright plate (1) of the frame has three slots.
3. The aerial work platform chassis structure according to claim 1, characterized in that, The rear axle box top plate (15) is located between the two rear axle box upper side plates (16), and there is a gap between the rear axle box upper side plate (16) and the rear axle box top plate (15).
4. The aerial work platform chassis structure according to claim 3, characterized in that, The top surface of the rear axle box top plate (15) is provided with a No. 3 square hole, and 8 round steel bars a (17) are also welded to the edge of the No. 3 square hole.
5. The aerial work platform chassis structure according to claim 1, characterized in that, Two rear axle support plate reinforcing ribs (31) are welded to the bottom surface of the rear axle support plate (29), and the ends of the rear axle support plate reinforcing ribs (31) are connected to the longitudinal upright plate (1) of the frame.
6. The aerial work platform chassis structure according to claim 5, characterized in that, Eight round steel bars a (17) installed at the edge of the first square hole on the transverse upright plate b (5) of the frame are connected end to end to form a square distributed along the edge of the first square hole, and the two squares formed are welded to the two sides of the transverse upright plate b (5) of the frame respectively; eight round steel bars b (19) installed at the edge of the first square hole on the transverse upright plate c (9) of the frame are connected end to end to form a square distributed along the edge of the first square hole, and the two squares formed are welded to the two sides of the transverse upright plate c (9) of the frame respectively; eight round steel bars a (17) installed at the edge of the third square hole on the top plate of the rear axle box (15) are connected end to end to form a square distributed along the edge of the third square hole, and the two squares formed are welded to the top and bottom surfaces of the top plate of the rear axle box (15) respectively.
Citation Information
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A type of frame
CN209159806U
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