CN212313679U

CN212313679U - Wheel loader sub vehicle frame

Info

Publication number: CN212313679U
Application number: CN202021047710.7U
Authority: CN
Inventors: 王松; 陈维雄; 王孟; 李明国; 朱坤
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-01-08
Anticipated expiration: 2030-06-09

Abstract

The utility model relates to a wheel loader sub vehicle frame, it includes the backup pad that the interval set up about two to and be located the bridge connecting plate at both ends around the backup pad, the grooving has been seted up at both ends around the backup pad, have on the bridge connecting plate and stretch into the grooving and rather than fixed connection's fixed plate, set firmly the gusset on the bridge connecting plate, both ends top about the gusset leans on in two backup pads, has set firmly the backing plate on the bridge connecting plate, offers the connecting hole that is used for fixed rear axle on backing plate and the bridge connecting plate. Compared with the conventional structure, the auxiliary frame of the wheel loader has the advantages that the number of parts is small, welding is convenient, welding quality is easy to guarantee, the risk of structural cracking can be reduced by reducing the number of welding seams, complex external impact force can be borne during working, and more severe working conditions can be suitable.

Description

Wheel loader sub vehicle frame

Technical Field

The utility model relates to a vehicle engineering field, specific wheel loader sub vehicle frame that says so.

Background

The wheel loader is quite complex in working conditions and bears various forces and moments in the working and walking processes, and a loader frame is a carrier of each large assembly of the wheel loader and is one of the most important stressed parts.

The frame system of the loader consists of a front frame, a rear frame, an auxiliary frame and a middle articulated shaft, bears most of the weight of the whole loader, and also bears the force and the torque transmitted by each assembly, so that the frame has enough strength and rigidity. The rear frame is connected with the rear drive axle through the auxiliary frame. The sub-frame is an important load-bearing member of the loader as a connecting structure for connecting the rear frame and the rear drive axle, and bears the entire load of the rear portion of the loader and the impact force generated during the entire operation, and therefore, the sub-frame must have sufficient strength and rigidity.

The prior technical scheme of the loader frame is as follows: the structural parts form a plurality of components, mainly comprise supporting plates, bridge connection plates, flitch plates, reinforcing ribs, backing plates and the like, have more welding seams, are easy to have manufacturing defects, and lead to the phenomenon of frequent occurrence of welding seam cracking in the use process.

Based on the above description, the disadvantages of the prior art are: the existing structure has the defects of poor manufacturing manufacturability and high production cost due to more component parts, more welding nodes and large welding amount; the auxiliary frame bears complex external impact force during working, and when the working condition is severe, the problem of fatigue cracking easily occurs at the welding seam.

Disclosure of Invention

The utility model aims at the above-mentioned problem provide a welded part is few, and structural strength is high, can reduce welded joint's wheel loader sub vehicle frame.

In order to achieve the above object, the utility model discloses a wheel loader sub vehicle frame includes the backup pad that the interval set up about two to and be located the bridge connecting plate at both ends around the backup pad, its structural feature is: grooving has been seted up at both ends around the backup pad, have on the bridge connecting plate and stretch into the grooving and rather than fixed connection's fixed plate, set firmly the gusset on the bridge connecting plate, both ends top about the gusset lean on in two backup pads, set firmly the backing plate on the bridge connecting plate, set up the connecting hole that is used for fixed rear axle on backing plate and the bridge connecting plate. After adopting above-mentioned structure, the frame compares with previous structure, and simple structure, part figure is few, and convenient welding easily guarantees welding quality, through reducing the quantity of welding seam, can reduce structure fracture risk to improve the rigidity and the intensity of frame.

Regarding the concrete structure of fixed plate, the fixed plate is equipped with two and is located the left and right sides of bridge connection board respectively, and the one end that the bridge connection board was kept away from to the fixed plate is equipped with the groove, and the groove is located the apex angle of both sides about the fixed plate. After adopting above-mentioned structure, two fixed plates and bridge connection board formula casting as an organic whole, the shape is similar to the concave font that both ends are outstanding, adopts this kind of structure, can guarantee the rigidity of controlling two backup pads, guarantees the joint strength of bridge connection board and backup pad.

In order to strengthen the connection strength of the fixing plate and the bridge connection plate, the outer side face of the fixing plate is flush with the outer end face of the bridge connection plate, and a transition fillet is arranged at the included angle between the inner side face of the fixing plate and the bridge connection plate. After adopting above-mentioned structure, through setting up the fillet transition, avoid the contained angle department stress concentration of fixed plate and bridge connecting plate, the fastness that reinforcing fixed plate and bridge connecting plate are connected.

Regarding the specific structure of the cutting groove, the cutting groove is positioned on the bottom surface of the support plate, and the cutting groove is internally provided with a groove corresponding to the groove. After adopting above-mentioned structure, the recess shape is identical with the shape of groove, through the cooperation of groove and grooving, improves the intensity of way welding seam joint, makes the fixed plate that the material is thicker can weld thoroughly with the bridging fishplate bar when carrying out welded connection, strengthens the fusibility between the two.

In order to reduce the self weight of the bridge connecting plate, chamfers are arranged on two top corners of the bridge connecting plate. The weight of the frame is reduced by removing the material with smaller stress.

In order to enhance the strength of the pin holes in the supporting plate, the supporting plate is provided with pin holes which penetrate through the supporting plate from left to right, the left side and the right side of the supporting plate are respectively and fixedly connected with flitch plates corresponding to the pin holes, and the flitch plates are provided with through holes communicated with the pin holes. The flitch plays local reinforcing effect, strengthens the structural strength of pinhole department through setting up the flitch, avoids the pinhole long-term atress fracture phenomenon to appear.

The tie plate is fixedly attached to the lower side of the bridge joint plate with respect to the position of the tie plate disposed on the bridge joint plate. The backing plate sets up in the one side opposite with the gusset, and the backing plate plays local reinforcing effect, strengthens the structural strength of connecting hole position on the bridge connection board through setting up the backing plate, avoids the phenomenon of ftractureing to appear after the connecting hole is atred for a long time.

Regarding the arrangement position of the rib plates on the bridge connection plate, the bottom surfaces of the rib plates are fixedly connected with the upper side surfaces of the bridge connection plate, and the outer side surfaces of the rib plates are flush with the end surfaces of the support plates. The rib plates are abutted against the inner side surfaces of the two supporting plates, so that the end parts of the supporting plates are prevented from deforming, and the welding seams between the supporting plates and the bridge connecting plate can be prevented from cracking.

The connection structure about each spare part on the sub vehicle frame, the sub vehicle frame passes through welded connection and becomes a whole, and welded connection is with low costs, and manufacturing process is good, has better rigidity and intensity, can bear complicated external impact force at the during operation, applicable comparatively abominable operating mode.

Because above-mentioned technical scheme's application is following right the utility model discloses an advantage effect carries out concrete analysis.

To sum up, the utility model discloses a frame is compared with structure in the past, simple structure, and part figure is few, and the welding quality is easily guaranteed in convenient welding, through the quantity that reduces the welding seam, can reduce structure fracture risk to improve the bulk rigidity and the intensity of frame, can bear more complicated external impact force at the during operation, applicable more abominable operating mode.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic perspective view of the subframe;

FIG. 3 is a schematic structural view of a support plate;

fig. 4 is a schematic structural view of a first embodiment of the bridge plate.

In the figure: the support plate comprises a support plate 1, a flitch plate 2, a rib plate 3, a bridge connecting plate 4, a backing plate 5, a pin hole 6, a cutting groove 7, a fixing plate 8, a groove 9, a connecting hole 10 and a groove 11.

Detailed Description

Referring to the drawings, the utility model discloses a wheel loader sub vehicle frame includes backup pad 1 that the interval set up about two, and be located backup pad 1 bridge connecting plate 4 at both ends around, grooving 7 has been seted up at both ends around backup pad 1, bridge connecting plate 4 is last to have and to stretch into grooving 7 and rather than fixed connection's fixed plate 8, gusset 3 has set firmly on bridge connecting plate 4, gusset 3 about both ends top lean on two backup pads 1, backing plate 5 has set firmly on bridge connecting plate 4, offer the connecting hole 10 that is used for fixed rear axle on backing plate 5 and the bridge connecting plate 4. After adopting above-mentioned structure, the frame compares with previous structure, and simple structure, part figure is few, and convenient welding easily guarantees welding quality, through reducing the quantity of welding seam, can reduce structure fracture risk to improve the rigidity and the intensity of frame.

Referring to fig. 4, in the first embodiment of the fixing plate 8, two fixing plates 8 are respectively located at the left and right sides of the bridge connecting plate 4, one end of the fixing plate 8 away from the bridge connecting plate 4 is provided with a groove 11, and the groove 11 is located on the top corners of the upper and lower sides of the fixing plate 8. After adopting above-mentioned structure, two fixed plates 8 and bridge connection board 4 formula casting as an organic whole, the shape is similar to the concave font that both ends are outstanding, adopts this kind of structure, can guarantee the rigidity of controlling two backup pads 1, guarantees the joint strength of bridge connection board 4 and backup pad 1.

In addition to the first exemplary embodiment of the fastening plate 8 shown in fig. 4, the fastening plate 8 can also be embodied in another way, which can be a one-piece rectangular plate, in which case the end of the fastening plate 8 likewise has a left-right-extending, elongated bevel 11, and the second exemplary embodiment of the fastening plate 8 is not shown in the drawing.

Referring to fig. 1 and 4, in order to enhance the connection strength between the fixing plate 8 and the bridge connection plate 4, the outer side surface of the fixing plate 8 is flush with the outer end surface of the bridge connection plate 4, and a transition fillet is arranged at an included angle between the inner side surface of the fixing plate 8 and the bridge connection plate 4. After adopting above-mentioned structure, through setting up the fillet transition, avoid the contained angle department stress concentration of fixed plate 8 and bridge connecting plate 4 to strengthen the fastness that fixed plate 8 and bridge connecting plate 4 are connected. In the second exemplary embodiment of the fastening plate 8, no transition fillets are provided.

Regarding the specific structure of the cutting groove 7, referring to fig. 3, the cutting groove 7 is located on the bottom surface of the support plate 1, and the cutting groove 7 has a groove 9 therein corresponding to the groove 11. After the structure is adopted, the shape of the groove 9 is matched with that of the groove 11, the strength of the weld joint is improved through the matching of the groove 11 and the cutting groove 7, the fixing plate 8 made of thicker materials and the bridge connecting plate 4 can be welded thoroughly when in welding connection, and the fusion of the fixing plate and the bridge connecting plate is enhanced.

Referring to fig. 4, in order to reduce the weight of the bridge connecting plate 4 itself, chamfers are provided on both corner corners of the bridge connecting plate 4. The weight of the frame is reduced to the maximum extent by removing the material of the part with smaller stress.

Referring to fig. 3, in order to enhance the strength of the pin holes 6 of the support plate 1, the support plate 1 is provided with pin holes 6 penetrating left and right, the left and right sides of the support plate 1 are respectively and fixedly connected with flitch plates 2 corresponding to the pin holes 6, and the flitch plates 2 are provided with through holes communicated with the pin holes 6. The flitch 2 plays local reinforcing effect, through setting up flitch 2 with the structural strength of reinforcing pinhole 6 department to the fracture phenomenon appears in the long-term atress of avoiding pinhole 6.

With respect to the position of the setting of the backing plate 5 on the bridge connecting plate 4, the backing plate 5 is fixedly attached to the lower side of the bridge connecting plate 4 with reference to fig. 2. The backing plate 5 is arranged on the surface opposite to the rib plate 3, the edge of the backing plate 5 is 10mm-15mm away from the edge of the bridge connection plate 4, and the dimension L is smaller than 1/3 of the thickness T (50mm) of the support plate 1, so that the end of the support plate has enough rigidity, and the risk of weld joint cracking is reduced. In addition, the backing plate 5 can also play a local reinforcing role, the structural strength of the positions of the connecting holes 10 in the bridge connecting plate 4 is enhanced by the backing plate 5, and the cracking phenomenon after the connecting holes 10 are stressed for a long time is avoided.

Regarding the arrangement position of the rib plate 3 on the bridge connection plate 4, referring to fig. 1, the bottom surface of the rib plate 3 is fixedly connected with the upper side surface of the bridge connection plate 4, and the outer side surface of the rib plate 3 is flush with the end surface of the support plate 1. The rib plates 3 abut against the inner side surfaces of the two supporting plates 1, so that the end parts of the supporting plates 1 are prevented from deforming, and the welding seams between the supporting plates 1 and the bridge connecting plates 4 can be prevented from cracking.

In summary, the present invention is not limited to the above-described embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.

Claims

1. The utility model provides a wheel loader sub vehicle frame, includes backup pad (1) that the interval set up about two to and be located bridge connecting plate (4) at both ends around backup pad (1), characterized by: grooving (7) have been seted up at both ends around backup pad (1), have on bridge connection board (4) and stretch into grooving (7) and rather than fixed connection's fixed plate (8), have set firmly gusset (3) on bridge connection board (4), both ends top lean on two backup pads (1) about gusset (3), have set firmly backing plate (5) on bridge connection board (4), offer connecting hole (10) that are used for fixed rear axle on backing plate (5) and bridge connection board (4).

2. The wheel loader subframe of claim 1 wherein: fixed plate (8) are equipped with two and are located the left and right sides of bridge connecting plate (4) respectively, and the one end that bridge connecting plate (4) were kept away from in fixed plate (8) is equipped with groove (11), and groove (11) are located the apex angle of both sides about fixed plate (8).

3. The wheel loader subframe of claim 2 wherein: the outer side face of the fixing plate (8) is flush with the outer end face of the bridge connecting plate (4), and a transition fillet is arranged at the included angle between the inner side face of the fixing plate (8) and the bridge connecting plate (4).

4. The wheel loader subframe of claim 3 wherein: the cutting groove (7) is positioned on the bottom surface of the support plate (1), and a groove (9) corresponding to the groove (11) is formed in the cutting groove (7).

5. The wheel loader subframe of claim 2 wherein: chamfers are arranged on two top corners of the bridge connecting plate (4).

6. The wheel loader subframe of claim 1 wherein: the support plate (1) is provided with a pin hole (6) which penetrates through the support plate from left to right, the left side and the right side of the support plate (1) are respectively and fixedly connected with a flitch (2) corresponding to the pin hole (6), and the flitch (2) is provided with a through hole communicated with the pin hole (6).

7. The wheel loader subframe of claim 1 wherein: the backing plate (5) is fixedly connected to the lower side face of the bridge connecting plate (4).

8. The wheel loader subframe of claim 1 wherein: the bottom surface of the rib plate (3) is fixedly connected with the upper side surface of the bridge connecting plate (4), and the outer side surface of the rib plate (3) is flush with the end surface of the supporting plate (1).

9. The wheel loader subframe of any one of claims 1 to 8 wherein: the fixed connection adopts welded connection.