CN214396948U - Heavy mining vehicle flexible bearing system and heavy mining vehicle - Google Patents
Heavy mining vehicle flexible bearing system and heavy mining vehicle Download PDFInfo
- Publication number
- CN214396948U CN214396948U CN202022810139.6U CN202022810139U CN214396948U CN 214396948 U CN214396948 U CN 214396948U CN 202022810139 U CN202022810139 U CN 202022810139U CN 214396948 U CN214396948 U CN 214396948U
- Authority
- CN
- China
- Prior art keywords
- balance shaft
- thrust rod
- mining vehicle
- frame
- heavy mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The utility model discloses a flexible bearing system of heavy mining vehicle and heavy mining vehicle, the bearing system includes: a frame; a suspension assembly mounted below the frame; the frame includes: the two longitudinal beams are arranged at intervals; the cross beams are arranged at intervals; and the U-shaped beams are arranged at the bottom of one end of the longitudinal beam. A heavy mining vehicle comprises the aforementioned load bearing system. The utility model provides a frame bearing capacity of mine car among the prior art little, the dismouting degree of difficulty is big, the not enough technical problem of suspension subassembly stability.
Description
Technical Field
The utility model relates to a mining car technical field especially relates to a flexible system of bearing of heavy mining car and heavy mining car.
Background
The existing domestic heavy fuel oil mining vehicle is basically 13L or less engine, the tonnage is about 100T, the rigid bearing system has lower operating efficiency and poor bending resistance and torsion resistance. Along with the environmental protection intensification, mine equipment tends to be large-scale, and excavation, loading and transportation coordination and matching are achieved for better matching with a large excavator, and domestic large-tonnage mining transportation equipment is lacked. The pain points of mine users are: the personnel expense is high; the cost of the oil auxiliary materials is high; the vehicle is difficult to operate in time; the earthwork is collected downwards; mechanical equipment is matched and cooperated; low operation efficiency, etc. The same significant challenges are faced by mine car host plants: like severe materialization competition, low gross benefit rate of products, poor driving comfort of products and the like.
The existing mining vehicle is heavy in total, long in continuous working time and complex in working environment, and the frame of the existing mining vehicle is used as a bearing carrier and bears all loads from goods and the ground. When the road surface jolts, the frame not only needs to bear the load in the vertical direction, but also has the load from the longitudinal direction and the transverse direction, so that the frame has the risks of distortion, tearing and damage, and once the frame is damaged, serious accidents are caused. The existing large-tonnage mining truck frame is basically a rigid frame which is welded completely or partially, and is characterized by strong vertical bearing capacity and large rigidity, but has a plurality of defects, such as heavy weight, high welding technical requirement and poor bending resistance and torsion resistance, and is not convenient for transportation and assembly in different places due to the welded frame. Most rear balanced suspension systems mainly adopt the forms of transverse pushing, direct pushing, upper four rods, lower four rods or upper two rods and lower four rods, the upper rods and the lower rods are not completely arranged in a parallelogram mode, the rod systems have the problems of uncoordinated motion and unreasonable stress, and the front-rear angle difference of the thrust rods is too large when a middle axle and a rear axle jump up and down, so that the connecting supports in the rear suspension are cracked too early, and the included angle of a transmission shaft is too large when the axle jumps up and down, and the stability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flexible bearing system of heavy mining vehicle and heavy mining vehicle, the frame bearing capacity of having solved mining vehicle among the prior art is little, and the dismouting degree of difficulty is big, the not enough technical problem of suspension subassembly stability.
The embodiment of the application discloses flexible bearing system of heavy mining truck includes:
a frame;
a suspension assembly mounted below the frame;
the frame includes:
the two longitudinal beams are arranged at intervals;
the cross beams are arranged at intervals;
and the U-shaped beams are arranged at the bottom of one end of the longitudinal beam.
The embodiment of the application improves the frame, improves the overall strength and the torsion resistance of the frame, and meets the requirement of the mining vehicle on the frame.
On the basis of the technical scheme, the embodiment of the application can be further improved as follows:
further, the frame reinforcing plate is installed to the inboard of longeron, adopts this step beneficial effect to be can increase the intensity of longeron through the frame reinforcing plate.
Further, the frame reinforcing plate is the L template, the length of frame reinforcing plate is not more than the length of longeron, adopts this step's beneficial effect to be convenient for assemble by the L template.
Further, the upper reinforcing plates are installed on two sides of the longitudinal beam and located at two ends of the cross beam, and the beneficial effect of the step is that the upper reinforcing plates can improve the strength of the joint of the longitudinal beam and the cross beam.
Further, the suspension assembly includes:
a balance shaft unit;
plate springs installed at both sides of the balance shaft unit;
a U-bolt mounting the plate spring to the balance shaft unit;
the eight thrust rod units are arranged on the balance shaft unit at intervals;
the number of the thrust rod units on the upper layer is consistent with that of the thrust rod units on the lower layer, and the number of the thrust rod units is four; the two adjacent thrust rod units on the upper layer and the two adjacent thrust rod units on the lower layer in opposite positions are combined to form a parallelogram, and the beneficial effect of the step is to design the balance shaft unit so as to improve the bearing capacity and improve the overall stability of the suspension assembly.
Further, the balance shaft unit includes:
the two balance shaft supports are arranged at intervals;
one end of the balance shaft penetrates through one balance shaft bracket, and the other end of the balance shaft penetrates through the other balance shaft bracket;
the two balance shaft shells are respectively arranged at two ends of the balance shaft;
the two balance shaft covers are respectively arranged at the end parts of the balance shaft shell;
a connecting plate connected to a bottom end of the balance shaft bracket;
the plate spring is installed on the balance shaft shell through the U-shaped bolt, and the beneficial effect of the step is that the balance shaft support, the balance shaft and the connecting plate are mutually matched to form a frame-shaped structure, so that the stability is improved.
Further, the shaft diameter of the balance shaft is at least 160mm, the center-to-center distance between the two balance shaft supports is at least 1600mm, and the length of the middle horizontal section of the balance shaft is at least 340 mm.
Furthermore, one end of the thrust rod unit is connected with the balance shaft unit, and the other end of the thrust rod unit is connected with a thrust rod support.
Further, the thrust rod unit includes:
one end of the thrust rod is connected with the balance shaft unit, and the other end of the thrust rod is connected with the thrust rod bracket;
the pin shaft penetrates through the joint of the thrust rod and the thrust rod bracket;
the nut is arranged at the tail end of the pin shaft;
the nut is a slotted nut, the split pin is assembled between the end part of the pin shaft and the nut, and the beneficial effects of the step are that the connection mode between the thrust rod and the thrust rod support is changed, and the connection stability between the thrust rod and the thrust rod support is improved.
The embodiment of the application also discloses a heavy mining vehicle which comprises the heavy mining vehicle flexible bearing system.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the embodiment of the application is improved aiming at the frame and the suspension assembly, so that the dynamic property, the bending resistance and the torsion resistance of the whole vehicle are improved, and the vehicle can better adapt to the complex working conditions of a mining area; the transport capacity is effectively improved, and the total mass of the whole vehicle reaches 190T; the operation cost and the comprehensive oil consumption are reduced, and the economical efficiency and the transportation efficiency are improved.
2. This application embodiment improves the frame and increases U type roof beam and crossbeam to arrange the crossbeam and the local enhancement of frame, with this overall performance that improves the frame.
3. This application embodiment improves the suspension subassembly, not only increases diameter of axle and interval, adopts eight distance rod structures of combination V formula moreover, improves shock resistance and high reliability, provides good atress transmission simultaneously, has promoted the reliability and the life of suspension
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible bearing system of a heavy mining vehicle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a frame of a flexible bearing system of a heavy mining vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a suspension assembly of a flexible bearing system of a heavy-duty mining vehicle according to an embodiment of the present invention;
fig. 4 is a top view of a suspension assembly of a heavy-duty mining vehicle flexible load bearing system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a balance shaft unit of a flexible bearing system of a heavy mining vehicle according to an embodiment of the present invention;
reference numerals:
1-a vehicle frame; 2-a suspension assembly;
11-a longitudinal beam; 12-a cross beam; 13-U-shaped beam; 14-a frame stiffener; 15-installing a reinforcing plate;
21-a balance shaft unit; 22-leaf spring; 23-U-shaped bolt; 24-a thrust rod unit; 25-a thrust rod support;
211-balance shaft support; 212-balance shaft; 213-two balance shaft housings; 214-two balance shaft covers; 215-connecting plate;
241-a thrust rod; 242-pin shaft; 243-nut; 244-cotter pin.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The embodiment of the application provides a heavy mining vehicle flexible bearing system and heavy mining vehicle, has solved the frame bearing capacity of mining vehicle among the prior art little, and the dismouting degree of difficulty is big, the not enough technical problem of suspension subassembly stability.
The general idea of the embodiment of the application is as follows: the embodiment of the application is improved aiming at the frame, the integral strength of the frame can be increased by increasing the plurality of cross beams, and meanwhile, the U-shaped beam is arranged at the bottom of the frame, so that the torsion resistance of the frame can be improved; this application embodiment still improves to the suspension subassembly, through adopting eight distance rod structures of combination V formula, improves shock resistance and high reliability, provides good atress transmission simultaneously, has promoted the reliability and the life of suspension to this improves the holistic intensity of frame and stability.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.
Example (b):
as shown in fig. 1-5, the present application discloses a heavy mining vehicle flexible bearing system, including:
a frame 1;
a suspension assembly 2 mounted below the frame 1;
the embodiment of the application improves frame 1, and the specific structure of frame 1 includes:
the cargo box comprises two longitudinal beams 11, wherein the longitudinal beams 11 are arranged at intervals, and the longitudinal beams 11 are used for supporting a cargo box in the embodiment of the cargo box;
the beam bodies 12 are arranged at intervals; one of the cross beams 12 positioned at one end of the longitudinal beam 11 is used for supporting the overturning end of the container to ensure that the container can be stably overturned, and the rest cross beams 2 are uniformly arranged at intervals to improve the integral strength of the frame;
the U-shaped beams 13 are arranged at the bottom of one end of the longitudinal beam 13, the U-shaped beams 13 in the embodiment of the application can be one or more, and the U-shaped beams 3 are arranged at the other end of the longitudinal beam 1, namely at one end far away from the cross beam 2, so that the torsion resistance of the frame is improved.
Specifically, a frame reinforcing plate 13 is mounted on the inner side of the longitudinal beam 11; the frame reinforcing plate 13 can be a straight plate, an L-shaped plate or other shapes; in the embodiment of the application, an L-shaped plate is adopted, and the length of the frame reinforcing plate 14 is not more than that of the longitudinal beam 11, so that the subsequent assembly is not influenced.
Specifically, in the embodiment of the present application, upper reinforcing plates 15 are further installed on two sides of the longitudinal beam 11, and the upper reinforcing plates 15 are located at two ends of the cross beam 12; the upper reinforcing plate 15 can improve the strength of the joint between the longitudinal beam 11 and the cross beam 12, disperse the stress at the joint, and improve the uniformity.
The frame 1 connection mode of the embodiment of the application adopts a bolt or rivet connection mode, the existing connection mode is changed, the existing frame connection mode is generally a welding mode and the like, the frame is poor in torsion resistance and bending resistance, the bolt connection or riveting mode is adopted, the torsion resistance and bending resistance of the frame can be improved, and replacement and maintenance are convenient.
The embodiment of the application also improves suspension assembly 2, and its specific structure includes:
a balance shaft unit 21;
plate springs 22 installed at both sides of the balance shaft unit 21;
a U-bolt 23, the U-bolt 23 mounting the plate spring 22 to the balance shaft unit 21;
eight thrust rod units 24 mounted on the balance shaft unit 21 at intervals; u-shaped bolt 23 in the embodiment of this application is used for fixed leaf spring 22, and wherein the leaf spring 22 of each side needs 2U type bolts at least to be fixed, can improve stability like this, and wherein the thrust bar is eight, and every four mutually supports, forms the thrust bar system, improves the stability of back suspension.
The distribution of the specific thrust rod units 24 is as follows: the thrust rod units 24 are divided into an upper layer and a lower layer, the number of the thrust rod units 24 positioned on the upper layer is consistent with that of the thrust rod units 24 positioned on the lower layer, and the number of the thrust rod units is four; two adjacent thrust rod units 24 on the upper layer and two adjacent thrust rod units 24 on the lower layer which are opposite to each other are combined to form a parallelogram, as seen from the direction in the attached drawing 3, the four thrust rod units 24 on the upper layer are paired in pairs to form a V-shaped front-back arrangement, the four thrust rod units 24 on the lower layer are paired in pairs to form a V-shaped front-back arrangement, and the V-shaped on the upper layer and the V-shaped on the lower layer are combined to form a parallelogram in a specific parallelogram combination mode; for example: the V-shaped thrust rod in front of the upper layer is matched with the V-shaped thrust rod in back of the lower layer to form a parallelogram, and similarly, the other pair of parallelograms is also of a similar structure.
Specifically, as shown in fig. 5, the balance shaft unit 21 includes:
two balance shaft brackets 211, wherein the balance shaft brackets 211 are arranged at intervals, and a horizontal extending plate is arranged on the side surface of each balance shaft bracket 211 in the embodiment of the application;
a balance shaft 212, one end of which passes through one of the balance shaft brackets 211 and the other end of which passes through the other balance shaft bracket 212;
two balance shaft housings 213 respectively mounted at both ends of the balance shaft 212;
two balance shaft covers 214 respectively mounted on the ends of the balance shaft housing 213;
a connection plate 215 connected to a bottom end of the balance shaft holder 211;
the plate spring 22 is mounted to the balance shaft housing 213 by the U-bolt 23; the connecting plate 105, the balance shaft bracket 101 and the balance shaft 102 in the embodiment of the present application are engaged with each other to form a frame-shaped structure, which increases the bearing capacity of the balance shaft unit 21 and enhances the torsion resistance, thereby improving the overall stability of the balance shaft unit.
Specifically, the shaft diameter of the balance shaft 212 is at least 160mm, the center-to-center distance between the two balance shaft brackets 211 is at least 1600mm, and the length of the middle horizontal section of the balance shaft 212 is at least 340 mm; compare current balance shaft 212 shaft diameter and centre-to-centre spacing, this application embodiment belongs to big shaft diameter and big centre-to-centre spacing, and wherein the shaft diameter is big, can improve balance shaft unit 21's bulk strength, and big centre-to-centre spacing can increase the arrangement space.
Specifically, one end of the thrust rod unit 24 is connected to the balance shaft unit 21, and the other end is connected to a thrust rod bracket 25.
Specifically, the thrust rod unit 24 includes:
one end of the thrust rod 241 is connected with the balance shaft unit 21, and the other end of the thrust rod 241 is connected with the thrust rod bracket 211;
the pin shaft 242 penetrates through the connection part of the thrust rod 241 and the thrust rod bracket 25;
a nut 243 mounted on the end of the pin 242;
the nut 243 is a slotted nut, and a cotter 244 is assembled between the end of the pin shaft 242 and the nut 243; the thrust rod unit 24 in the embodiment of the present application improves the connection portion of the thrust rod 241, and the connection manner of the existing thrust rod 241 and the thrust rod bracket 25 is generally a bolt connection manner, so that a bolt is loosened during vibration; this application embodiment changes the connected mode of round pin axle and split nut into, changes split pin 244 to carry on spacingly, can guarantee the stability of distance rod 241 and distance rod support 25 junction like this, can not take place the condition that the round pin axle drops.
The embodiment of the application also installs spacing support at leaf spring 22 both ends, and this spacing support's bottom and the distance rod leg joint that is located the below still are provided with the buffering and glue the piece between.
The improvement of the suspension assembly in the embodiment of the application has two points, one point is the improvement of a rod system of the thrust rod, the rod system of the application is a combined V-type eight-thrust-rod structure, so that the problem of lateral force failure can be effectively solved, and four thrust rod units form a parallelogram rod system, so that the angle change of the front thrust rod and the rear thrust rod in the motion process of the suspension is greatly improved, the motion is more coordinated, the force transmission is facilitated, the reliability and the service life of the suspension are improved by a rear suspension system, the motion intersection angle of a transmission shaft is reduced, and the service lives of the transmission shaft and an axle are prolonged; the other point is the improvement of the connection mode of the thrust rod 241 and the thrust rod bracket 25, and the connection mode of a pin shaft and a split nut is adopted, so that the connection stability can be improved.
The embodiment of the application also discloses a heavy mining vehicle, which comprises the heavy mining vehicle flexible bearing system.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. A heavy mining vehicle flexible load bearing system, comprising:
a frame;
a suspension assembly mounted below the frame;
the frame includes:
the two longitudinal beams are arranged at intervals;
the cross beams are arranged at intervals;
and the U-shaped beams are arranged at the bottom of one end of the longitudinal beam.
2. The flexible load bearing system of claim 1, wherein said side rails are fitted with frame reinforcement plates on the inside.
3. The flexible load bearing system of claim 1, wherein said longitudinal beams are provided with upper reinforcing plates at both sides thereof, and said upper reinforcing plates are located at both ends of said cross beam.
4. The heavy mining vehicle flexible load bearing system of claim 1, wherein the suspension assembly comprises:
a balance shaft unit;
plate springs installed at both sides of the balance shaft unit;
a U-bolt mounting the plate spring to the balance shaft unit;
the eight thrust rod units are arranged on the balance shaft unit at intervals;
the number of the thrust rod units on the upper layer is consistent with that of the thrust rod units on the lower layer, and the number of the thrust rod units is four; two adjacent thrust rod units on the upper layer and two adjacent thrust rod units on the lower layer in opposite positions are combined to form a parallelogram.
5. The heavy mining vehicle flexible load bearing system of claim 4, wherein the balance shaft unit comprises:
the two balance shaft supports are arranged at intervals;
one end of the balance shaft penetrates through one balance shaft bracket, and the other end of the balance shaft penetrates through the other balance shaft bracket;
the two balance shaft shells are respectively arranged at two ends of the balance shaft;
the two balance shaft covers are respectively arranged at the end parts of the balance shaft shell;
a connecting plate connected to a bottom end of the balance shaft bracket;
the leaf spring is mounted to the balance shaft housing by a U-bolt.
6. The flexible load carrying system of claim 5, wherein said balance shaft has a shaft diameter of at least 160mm, said balance shaft supports have a center-to-center distance of at least 1600mm, and said balance shaft has a middle horizontal segment of at least 340mm in length.
7. The heavy mining vehicle flexible bearing system according to claim 4, wherein one end of the thrust rod unit is connected with the balance shaft unit, and the other end is connected with a thrust rod bracket.
8. The heavy mining vehicle flexible load carrying system of claim 7, wherein the thrust rod unit comprises:
one end of the thrust rod is connected with the balance shaft unit, and the other end of the thrust rod is connected with the thrust rod bracket;
the pin shaft penetrates through the joint of the thrust rod and the thrust rod bracket;
the nut is arranged at the tail end of the pin shaft;
the nut is a slotted nut, and a cotter pin is assembled between the end part of the pin shaft and the nut.
9. A heavy mining vehicle comprising a heavy mining vehicle flexible load carrying system according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022810139.6U CN214396948U (en) | 2020-11-27 | 2020-11-27 | Heavy mining vehicle flexible bearing system and heavy mining vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022810139.6U CN214396948U (en) | 2020-11-27 | 2020-11-27 | Heavy mining vehicle flexible bearing system and heavy mining vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214396948U true CN214396948U (en) | 2021-10-15 |
Family
ID=78035690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022810139.6U Active CN214396948U (en) | 2020-11-27 | 2020-11-27 | Heavy mining vehicle flexible bearing system and heavy mining vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214396948U (en) |
-
2020
- 2020-11-27 CN CN202022810139.6U patent/CN214396948U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210391305U (en) | Sectional type electric logistics vehicle frame structure capable of realizing rapid power battery replacement | |
| CN204323486U (en) | Light-duty pure electric coach and chassis frame thereof | |
| CN109131567B (en) | Frame assembly and vehicle | |
| GB2390581A (en) | Vehicle chassis | |
| CN111361376A (en) | Oil gas suspension system and engineering vehicle | |
| CN204197030U (en) | A kind of quarry tipper riveted joint vehicle frame | |
| CN214396948U (en) | Heavy mining vehicle flexible bearing system and heavy mining vehicle | |
| CN112721564A (en) | Light-weight balance shaft suspension | |
| CN112429084A (en) | Heavy mining vehicle flexible bearing system and heavy mining vehicle | |
| CN212950832U (en) | Light mining dump truck frame and mining dump truck | |
| CN115593517A (en) | Front longitudinal beam structure integrating auxiliary frame function and front engine room assembly | |
| CN215621261U (en) | Rear suspension system and dump truck | |
| CN212979779U (en) | Hydro-pneumatic suspension and vehicle | |
| CN205202650U (en) | Light -weighted back torsion roof beam | |
| CN203864803U (en) | Double-rear-axle type heavy truck frame | |
| CN108394332B (en) | Frame assembly structure of dump truck | |
| CN110775161A (en) | Assembled freight train frame assembly | |
| CN212400810U (en) | Oil gas suspension system and engineering vehicle | |
| CN213619963U (en) | Heavy high-bearing multilayer flexible mining frame | |
| CN221023851U (en) | Flexible frame and mine car | |
| CN203078600U (en) | Torque-reducing connecting device for vehicle-mounted metal oil tank and chassis | |
| CN217553995U (en) | Dumper frame assembly and vehicle | |
| CN212447023U (en) | Rear air suspension for airport ferry vehicle | |
| CN214728010U (en) | Non-offset-moment lightweight low-floor transverse thrust structure | |
| CN216231546U (en) | Mounting structure of heavy truck axle air suspension lateral thrust rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |