CN220374294U

CN220374294U - Auxiliary supporting device for light gearbox

Info

Publication number: CN220374294U
Application number: CN202322108485.3U
Authority: CN
Inventors: 冯益坤; 梁晓明; 刘国强; 豆明星
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-01-23
Anticipated expiration: 2033-08-07

Abstract

The utility model provides an auxiliary supporting device for a lightweight gearbox, which relates to the technical field of automobiles and adopts the following scheme: including the backup pad, the upper shield is installed on the upper portion of backup pad, and the apron is installed on the upper portion of upper shield, and the lower part of backup pad is provided with down the guard layer, and the lower part of lower shield is provided with the support frame, is provided with the mounting hole in the backup pad, installs the sleeve in the mounting hole, installs the bolt in the sleeve, and the bolt passes apron, upper shield, mounting panel, lower guard layer, support frame in proper order and connects them, and the apron is outwards extended to the both sides of upper shield. The utility model has the following effects: the damage of the surface fiber layer is avoided to influence the reliability of the supporting device, and even if creep occurs to the middle clamping bolt, the bolt clamping force can meet the performance requirement.

Description

Auxiliary supporting device for light gearbox

Technical Field

The utility model relates to the technical field of automobiles, in particular to an auxiliary supporting device for a lightweight gearbox.

Background

The auxiliary supporting device of the heavy commercial vehicle gearbox is an auxiliary suspension device of the engine and the gearbox. Under static or dynamic load, the auxiliary supporting device of the gearbox can effectively avoid overload of the engine suspension part and prolong the service life of the suspension part.

The supporting parts in the auxiliary supporting assembly of the gearbox are made of metal materials, so that the reliability is high, but the weight is also high. In order to adapt to the light weight development trend of heavy commercial vehicles, a supporting part of an auxiliary support of a gearbox is made of novel composite materials gradually, and the auxiliary support of the gearbox of the mining engineering vehicle and the engineering vehicle are disclosed in patent document with the publication number of CN 214647569U, and comprise a supporting plate, a flange plate, a shock absorber and a connecting plate, wherein the supporting plate is arranged on the gearbox and is attached to the mounting surface of the gearbox, and the flange plate is arranged in a shock absorber mounting hole in the supporting plate; the shock absorber is installed in the flange plate, the connecting plate is assembled on the shock absorber, the connecting plate is connected with the frame, and the connecting plate and the shock absorber are connected together through the fastener.

However, the following problems exist with the use of the novel composite material for the support part: firstly, because the hardness of the composite material is low, the composite material is easy to collide when connected with metal parts, and the internal fiber structure of the composite material is damaged, so that the fatigue life of the composite material is influenced; secondly, the composite material has creep deformation, and the connecting and fixing bolt can loose after long-term use, so that the system reliability is affected.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, when a support part adopts a novel composite material, creep occurs under long-term use conditions, so that bolts of an intermediate clamping device are loosened, and the performance of a product is influenced.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a lightweight gearbox auxiliary stay device, includes the backup pad, and the upper portion of backup pad is installed the inoxidizing coating, and the apron is installed on the upper portion of upper shield, and the lower part of backup pad is provided with down the inoxidizing coating, and the lower part of lower inoxidizing coating is provided with the support frame, is provided with the mounting hole in the backup pad, installs the sleeve in the mounting hole, installs the bolt in the sleeve, and the bolt passes apron, upper shield, mounting panel, lower inoxidizing coating, support frame in proper order and connects them, and the apron is outwards extended to the both sides of upper shield. Compared with the cover plate, the upper protective layer has large length direction size, and both sides of the upper protective layer extend out of both sides of the cover plate, so that the design can prevent the support plate from directly contacting with metal parts in the assembly or deformation process, and further avoid the damage of a surface fiber layer from affecting the reliability of the support device; by arranging the sleeve, the cover plate is pressed against the sleeve by the bolt clamping force during pressing; even if creep occurs to the upper protective layer and the supporting plate, the clamping force of the bolts still compresses the cover plate, the sleeve and the supporting frame, and the bolts are not loosened, so that the whole auxiliary supporting device of the gearbox is not influenced.

Further, the upper protective layer is made of rubber, a second connecting hole is formed in the upper protective layer, and the bolt penetrates through the second connecting hole. Further, the length direction dimension of the upper protective layer is 5-8 mm larger than the length direction dimension of the cover plate. The protective layer is a rubber layer with a hole in the middle, compared with the cover plate, the two sides of the protective layer extend outwards to form the cover plate, and the protective layer is 5-8 mm larger in the length direction; the design can avoid the damage of the surface fiber layer caused by the direct contact of the supporting plate with the metal part in the assembly or deformation process, and the reliability of the supporting plate assembly is affected.

Further, the cover plate is provided with an upper first connecting hole, the aperture of the first connecting hole is smaller than the outer diameter of the sleeve, and the sleeve is positioned in the mounting hole and the second connecting hole. By screwing the bolts, the cover plate and the upper protective layer are pressed downwards, the upper end face of the sleeve can be propped against the cover plate, and the clamping force of the bolts can not be loosened.

Further, the lower protective layer is made of rubber, and is provided with a third connecting hole.

Further, be provided with the fourth connecting hole on the mounting bracket, the aperture of fourth connecting hole is less than telescopic external diameter, and the sleeve passes the third connecting hole and withstands on the mounting bracket, and the bolt passes first connecting hole, sleeve and fourth connecting hole. In order to better ensure that the bolt clamping force is not loosened.

Further, h3+h4+h3> h5, and a gap of 4mm-5mm is reserved in the height direction between the cover plate and the sleeve when the bolt is in an unclamped state; meanwhile, the clearance of the auxiliary supporting device of the gearbox is 0mm in the state of clamping the bolts. In the bolt assembling and clamping process, the cover plate compresses and deforms the upper protective layer and the support plate under the action of clamping force, and the reserved gap is gradually reduced; when the reserved gap is reduced to 0mm, the cover plate is pressed against the sleeve by the bolt clamping force; even if creep occurs to the upper protective layer and the supporting plate, the clamping force of the bolts still compresses the cover plate, the sleeve and the supporting frame, and the bolts are not loosened, so that the whole auxiliary device of the gearbox is not influenced.

Further, d1=d2=d3=d4 < d5< d6< d7< d8, and in the unclamped state, the radial clearance between the sleeve and the upper protective layer is 4mm-5mm, and the radial clearance between the sleeve and the lower protective layer is 4mm-5mm; therefore, the deformation space of the upper protective layer and the lower protective layer in the middle clamping device bolt tightening process can be ensured.

Further, the support frame is U type metal sheet, and the both sides of support frame are connected with the bracket, and the bracket is used for being connected with the frame, and then installs gearbox auxiliary stay device on the frame.

Further, wear-resistant layers are arranged on the bottom surfaces of the two ends of the supporting plate. The supporting plate is of a sheet plate spring structure, the end part of the supporting plate is supported by the bracket, and the interference with the bracket after assembly is 2mm-3mm. The matrix of the supporting plate is made of composite material, replaces the traditional alloy spring steel material, and reduces the weight by 70%. The wear-resistant layers are adhered to the two end parts of the support plate, so that the wear resistance of the end parts of the support plate is improved; the wear-resistant layer is an alloy steel plate, heat treatment is needed, and the surface hardness is 40-45 HRC.

Further, a gasket is arranged between the bolt and the cover plate, and the bolt passes through the support frame and is screwed down by the nut from the lower part.

From the above technical scheme, the utility model has the following advantages:

the scheme provides an auxiliary supporting device for a lightweight gearbox, compared with a cover plate, an upper protective layer is large in length direction, two sides of the upper protective layer extend out of two sides of the cover plate, and the design can prevent a supporting plate from being directly contacted with metal parts in the assembly or deformation process, so that the reliability of the supporting device is prevented from being influenced by damage of a surface fiber layer; through setting up the sleeve, the bolt clamping force presses the apron to the sleeve during the compress tightly, even like this go up inoxidizing coating, backup pad and appear creeping, the bolt clamping force still compresses tightly apron, sleeve and with the support frame, and the bolt is not hard up, and then whole gearbox auxiliary stay device does not influence the use. Simple structure, light weight, high reliability and easy maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a split structure according to an embodiment of the present utility model.

Fig. 3 is a diagram showing a state of clamping a bolt according to an embodiment of the present utility model.

Fig. 4 is a view showing a state in which the bolts are not clamped according to the embodiment of the present utility model.

In the figure, 1, a frame, 2, a bracket, 3, a supporting plate, 4, an upper protective layer, 5, a cover plate, 6, a gasket, 7, a gearbox, 8, a supporting frame, 9, a wear-resistant layer, 10, bolts, 11 and a sleeve.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1 to 4, this embodiment provides a lightweight gearbox auxiliary stay device, including backup pad 3, upper shield 4 is installed to backup pad 3's upper portion, cover plate 5 is installed to upper shield 4's upper portion, backup pad 3's lower part is provided with lower shield, lower shield's lower part is provided with support frame 8, be provided with the mounting hole on backup pad 3, install sleeve 11 in the mounting hole, install bolt 10 in the sleeve 11, bolt 10 passes cover plate 5 in proper order, upper shield 4, the mounting panel, lower shield, support frame 8 and with these connections, be provided with packing ring 6 between bolt 10 and the cover plate 5, bolt 10 passes behind support frame 8 and screws up through the nut from the lower part, support frame 8 is the U type sheetmetal, support frame 8's both sides are connected with bracket 2, bracket 2 is used for being connected with frame 1, and then install gearbox auxiliary stay device on frame 1.

Wherein, be provided with wearing layer 9 on the both ends bottom surface of backup pad 3, backup pad 3 is slice leaf spring structure, and its tip is supported by bracket 2, and after the assembly with bracket 2's interference volume be 2mm-3mm. The matrix of the supporting plate 3 is made of composite material, replaces the traditional alloy spring steel material, and reduces the weight by 70%. The wear-resistant layers 9 are adhered to the two end parts of the support plate 3, so that the wear resistance of the end parts of the support plate 3 is improved; the wear-resistant layer 9 is an alloy steel plate, and needs to be subjected to heat treatment, and the surface hardness is 40-45 HRC.

Wherein, the two sides of the upper protective layer 4 extend outwards to form a cover plate 5. The upper protective layer 4 is made of rubber, and a second connecting hole is formed in the upper protective layer 4, and the bolt 10 passes through the second connecting hole. Further, the length dimension of the upper protective layer 4 is 5-8 mm larger than the length dimension of the cover plate 5. The protective layer is a rubber layer with a hole in the middle, compared with the cover plate 5, the two sides of the protective layer extend outwards to form the cover plate 5, and the protective layer 4 is 5mm-8mm larger in the length direction; the design can avoid the damage of the surface fiber layer caused by the direct contact of the supporting plate 3 with metal parts in the assembly or deformation process, and the reliability of the assembly of the supporting plate 3 is affected.

In addition, the cover plate 5 is provided with an upper first connection hole, the aperture of which is smaller than the outer diameter of the sleeve 11, and the sleeve 11 is located in the mounting hole and the second connection hole. The lower protective layer is made of rubber, and is provided with a third connecting hole. Be provided with the fourth connecting hole on the mounting bracket, the aperture of fourth connecting hole is less than the external diameter of sleeve 11, and sleeve 11 passes the third connecting hole and withstands on the mounting bracket, and bolt 10 passes first connecting hole, sleeve 11 and fourth connecting hole, for better assurance bolt 10 clamping force can not become flexible. Specifically, d1 is the diameter of the bolt 10, d2 is the inner diameter of the washer 6, d3 is the diameter of the first connecting hole on the cover plate 5, d4 is the inner diameter of the sleeve 11, d5 is the outer diameter of the sleeve 11, d6 is the diameter of the mounting hole on the support plate 3, d7 is the diameter of the second connecting hole, d8 is the outer diameter of the washer 6, h1 is the thickness of the washer 6, h2 is the thickness of the cover plate 5, h3 is the thickness of the upper protective layer 4, h4 is the thickness of the support plate 3, and h5 is the thickness of the sleeve 11. h3+h4+h3> h5, and a gap of 4mm-5mm is reserved in the height direction between the cover plate 5 and the sleeve 11 when the bolt 10 is in an unclamped state; at the same time, the clearance of the auxiliary supporting device of the gearbox is 0mm in the clamping state of the bolt 10. In the process of assembling and clamping the bolts 10, the cover plate 5 compresses and deforms the upper protective layer 4 and the support plate 3 under the action of clamping force, and the reserved gap is gradually reduced; when the clearance is reduced to 0mm, the clamping force of the bolt 10 presses the cover plate 5 against the sleeve 11; even if creep occurs in the upper protective layer 4 and the support plate 3, the clamping force of the bolts 10 still presses the cover plate 5, the sleeve 11 and the support frame 8, the bolts 10 are not loosened, and the whole auxiliary device of the gearbox is not affected. d1 D2=d3=d4 < d5< d6< d7< d8, and the radial clearance between the sleeve 11 and the upper protective layer 4 is 4mm-5mm and the radial clearance between the sleeve 11 and the lower protective layer is 4mm-5mm when the bolts 10 of the auxiliary supporting device of the gearbox are in an unclamped state; this ensures the deformation space of the upper and lower shields 4, 10 during tightening of the middle clamping device bolts 10.

The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the utility model and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a lightweight gearbox auxiliary stay device, includes the backup pad, its characterized in that, the upper portion of backup pad installs the inoxidizing coating, and the apron is installed on the upper portion of upper shield, and the lower part of backup pad is provided with down the inoxidizing coating, and the lower part of lower shield is provided with the support frame, is provided with the mounting hole in the backup pad, installs the sleeve in the mounting hole, installs the bolt in the sleeve, and the bolt passes apron, upper shield, mounting panel, lower shield, support frame in proper order and connects them, and the apron is outwards extended to the both sides of upper shield.

2. The auxiliary supporting device for the lightweight gearbox of claim 1, wherein the upper protective layer is made of rubber, a second connecting hole is formed in the upper protective layer, a bolt penetrates through the second connecting hole, and the length direction of the upper protective layer is 5-8 mm larger than the length direction of the cover plate.

3. The auxiliary supporting device for the lightweight gearbox as claimed in claim 2, wherein the cover plate is provided with an upper first connecting hole, the aperture of the first connecting hole is smaller than the outer diameter of the sleeve, and the sleeve is positioned in the mounting hole and the second connecting hole.

4. A lightweight gearbox auxiliary support device as claimed in claim 3, wherein the lower protective layer is of rubber material and is provided with a third connection hole.

5. The auxiliary supporting device for the lightweight gearbox of claim 4, wherein the mounting frame is provided with a fourth connecting hole, the aperture of the fourth connecting hole is smaller than the outer diameter of the sleeve, the sleeve passes through the third connecting hole and resists the mounting frame, and the bolt passes through the first connecting hole, the sleeve and the fourth connecting hole.

6. The auxiliary supporting device for the lightweight gearbox according to claim 5, wherein h3+h4+h3> h5, and a gap of 4mm-5mm is reserved between the cover plate and the sleeve in the height direction in the unclamped state of the bolt; in the bolt clamping state, the gap between the cover plate and the sleeve in the height direction is 0mm.

7. The auxiliary support device for a lightweight gearbox of claim 6, wherein d1=d2=d3=d4 < d5< d6< d7< d8, and wherein the radial clearance between the sleeve and the upper shield layer is 4mm-5mm and the radial clearance between the sleeve and the lower shield layer is 4mm-5mm in the unclamped state of the bolt.

8. The auxiliary supporting device for the lightweight gearbox according to any one of claims 1 to 7, wherein the supporting frame is a U-shaped metal plate, and brackets are connected to both sides of the supporting frame.

9. The auxiliary supporting device for the lightweight gearbox as claimed in any one of claims 1 to 7, wherein the bottom surfaces of both ends of the supporting plate are provided with wear-resistant layers.

10. A lightweight gearbox auxiliary support device as claimed in any one of claims 1 to 7, wherein a washer is provided between the bolt and the cover plate, the bolt passing through the support frame and being tightened from below by a nut.