CN210284411U

CN210284411U - Commercial car driver's cabin front suspension assembly structure

Info

Publication number: CN210284411U
Application number: CN201920799341.8U
Authority: CN
Inventors: 吴坤岳; 刘培武
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-04-10
Anticipated expiration: 2029-05-30

Abstract

The utility model belongs to the commercial vehicle body field, and relates to a commercial vehicle cab front suspension assembly structure; the suspension assembly comprises a suspension assembly, a transverse stabilizer bar and a swing arm; the number of the suspension assemblies is two, and each suspension assembly comprises a supporting seat, an upper bracket, a lower bracket, a spiral spring and a limiting assembly; two sets of swing arms are symmetrically fixed on two sides of the transverse stabilizer bar; one end of the swing arm is connected with the transverse stabilizer bar, the other end of the swing arm is rotatably connected with one end of the upper bracket, the other end of the upper bracket is rotatably connected with one end of the spiral spring, and the other end of the spiral spring is rotatably connected with the lower bracket; and the two ends of the transverse stabilizer bar are respectively matched and connected with the supporting seat and the limiting assembly and used for limiting the transverse stabilizer bar. The utility model discloses a with the shock absorber setting both ends about the frame, obtain bigger working stroke, promote the driver's cabin travelling comfort, increase the design of upset stop gear, guarantee that the upset process is safer.

Description

Commercial car driver's cabin front suspension assembly structure

Technical Field

The utility model belongs to commercial car automobile body field especially indicates a suspension assembly structure before commercial car driver's cabin.

Background

Along with the continuous upgrading of the technology of heavy trucks and medium trucks of commercial vehicles, people put forward higher and higher requirements on improving the riding comfort of drivers and passengers, reducing the fatigue strength of drivers and improving the safety of vehicles. The structure and parameters of the cab suspension system are the primary factors that determine ride comfort and safety.

At present, the cab of a main medium-heavy truck generally adopts a front suspension device with an elastic element of a rubber block, a spiral spring or an air spring. The front suspension of the cab is an important component of a cab suspension system, is arranged between the front lower part of the cab and a frame, mainly plays roles of supporting, overturning and resisting side-tipping of the cab, simultaneously attenuates the vibration and impact transmitted to the cab by uneven excitation of a road surface during the running of a vehicle, guides the vertical movement of the cab relative to the ground, limits the side-tipping and deflection movement of the cab and improves the riding comfort.

Patent document 1(CN204110189U) discloses a front suspension structure, in which a rear hinge point is connected to a chassis, not to a cab, instead of the chassis.

Patent document 2(CN207984984U) discloses a front suspension assembly and an automobile, and the front suspension assembly structure described in patent document 2 is an air spring arrangement structure, not a coil spring arrangement structure.

Patent document 3(CN208411893U) discloses a novel cab front suspension assembly structure, and the front suspension assembly structure described in patent document 3 is also an air spring arrangement structure, not a coil spring arrangement structure.

The utility model discloses can solve, in traditional design in the past, often set up coil spring inside driver's cabin support bracket, lead to spring working stroke less, the relatively poor problem of damping effect increases the span about the front suspension structure simultaneously, promotes driver's cabin support stability.

Disclosure of Invention

The utility model aims at providing a suspension assembly structure before driver's cabin, the driver's cabin shock attenuation and the riding comfort problem of vehicle driving in-process can be solved to this structure. Meanwhile, the problem of interference caused by difficulty in overturning and excessive overturning after the overturning limit of the cab is invalid is solved.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:

a front suspension assembly structure of a commercial vehicle cab comprises a suspension component 1, a transverse stabilizer bar 2 and a swing arm 3;

the number of the suspension assemblies 1 is two, and each suspension assembly 1 comprises a supporting seat 11, an upper bracket 12, a lower bracket 13, a spiral spring 14 and a limiting assembly 15; the supporting seats 11 are arranged on the two sides of the front end of the frame in a bilateral symmetry mode, and the upper bracket 12 is fixedly connected with left and right floor beams of the cab through bolts; the lower bracket 13 is fixedly connected with the side surfaces of the left frame and the right frame through bolts;

the two sets of swing arms 3 are symmetrically fixed at two sides of the transverse stabilizer bar 2; one end of the swing arm 3 is connected with the transverse stabilizer bar 2, the other end of the swing arm 3 is rotatably connected with one end of the upper bracket 12, the other end of the upper bracket 12 is rotatably connected with one end of the spiral spring 14, and the other end of the spiral spring 14 is rotatably connected with the lower bracket 13;

and the two ends of the transverse stabilizer bar are respectively matched and connected with the supporting seat and the limiting assembly and used for limiting the transverse stabilizer bar.

In the technical scheme, the limiting assembly 15 comprises a buffer bush 151, a cover plate 152 and an end cover 153; the two ends of the transverse stabilizer bar 2 are respectively provided with a connecting end 21, the support seat 11 is provided with a semicircular groove 111, and the buffer bush 151 is externally sleeved on the stabilizer bar connecting end 21, is in clearance fit with the connecting end 21 and can rotate relatively; the cover plate 152 is of a semicircular groove type stamping structure, the buffer bush 151 is externally embedded in the semicircular groove 111 of the support seat 11, and is fixed by the cover plate 152 and the bolt 154 and can not rotate relatively after being fixed, and the end cover 153 is fixed at the end part 211 of the connecting end through the fixing bolt 155 and is used for limiting the buffer bush 151.

In the technical scheme, the buffer bush 151 comprises an inner washer 1511, an elastic body 1512 and an outer washer 1513, the inner washer 1511 is made of nylon, the elastic body 1512 is made of rubber, the outer washer 1513 is made of metal, and the inner washer, the elastic body and the outer washer are connected into a whole through vulcanization.

In the technical scheme, one end of the swing arm 3, which is connected with the transverse stabilizer bar 2, is provided with an upper limit block 31, and the support seat 11 is provided with a lower limit block 112; the height dimension and the limiting contact surface angle dimension of the upper limiting block 31 and the lower limiting block 112 at the end part of the swing arm are controlled so as to realize that the vehicle is limited without interference during normal running, and a gap is reserved between the upper limiting block and the lower limiting block after the cab is overturned to the extreme position; if the limit of the turnover system fails at the moment, the cab can be continuously turned over to stop when the upper limit block and the lower limit block are in contact, and the upper limit block and the lower limit block are in surface contact during contact, so that the turnover protection effect of the cab is realized.

Compared with the prior art, the invention has the beneficial effects that:

this technical scheme is through providing a suspension assembly before commercial car driver's cabin, includes: suspension subassembly, stabilizer bar and swing arm, the suspension subassembly includes: supporting seat, upper bracket, lower carriage, coil spring, spacing subassembly through with the shock absorber setting both ends about the frame, obtain bigger working stroke, promote the driver's cabin travelling comfort, increase driver's cabin front end support nature, increase the design of upset stop gear simultaneously, guarantee that the upset process is safer.

Drawings

The invention is further described with reference to the accompanying drawings in which:

fig. 1 is a schematic view of a cab front suspension assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a cab front suspension assembly according to an embodiment of the present invention;

FIG. 3 is an exploded view of the stop assembly;

in the figure:

1. suspension subassembly, 11, supporting seat, 111, semicircular groove, 112, lower stop block, 12, upper bracket, 13, lower support, 14, coil spring, 15, stop subassembly, 151, cushion bush, 152, apron, 153, end cover, 154, bolt, 155, fixing bolt, 1511, inner washer, 1512, elastomer, 1513, outer washer, 2, stabilizer bar, 21, link, 211, tip, 3, swing arm, 31, upper stop block, 4, frame.

Detailed Description

The technical solutions of the present invention are described in detail below by way of examples, which are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but should not be construed as limiting the present invention.

A commercial vehicle cab front suspension assembly comprising: the suspension assembly, the transverse stabilizer bar and the swing arm; the suspension assembly includes: the device comprises a supporting seat, an upper bracket, a lower bracket, a spiral spring and a limiting assembly; the two sets of supporting seats are arranged on two sides of the front end of the frame in a bilateral symmetry mode, the lower ends of the supporting seats are fixed on the frame, the upper ends of the supporting seats are provided with semicircular grooves, and the supporting seats are provided with lower limiting blocks; the upper bracket is fixedly connected with the left floor beam and the right floor beam of the cab through bolts; the lower support is fixedly connected with the side surfaces of the left frame and the right frame through bolts.

Preferably, the number of the swing arms is two, the swing arms are fixed on two sides of the transverse stabilizer bar in a bilateral symmetry mode, an upper limiting block is arranged at one end, connected with the transverse stabilizer bar, of each swing arm, and the other end of each swing arm is rotatably connected with one end of the upper bracket.

Preferably, the other end of the upper bracket is rotatably connected with one end of the spiral spring, and the other end of the spiral spring is rotatably connected with the lower bracket;

preferably, both ends of the transverse stabilizer bar are provided with connecting ends, and the connecting ends are respectively matched and connected with the supporting seat and the limiting assembly and used for limiting the transverse stabilizer bar;

preferably, the spacing assembly includes: the buffer bush is sleeved outside the connecting end of the stabilizer bar, is in clearance fit with the connecting end and can rotate relatively; the cover plate is of a semicircular groove type stamping structure, the buffer bush is externally embedded in the semicircular groove of the supporting seat and is fixed through the cover plate and the bolt, the buffer bush cannot rotate relatively after being fixed, and the end cover is fixed at the end part of the connecting end through the fixing bolt and is used for limiting the buffer bush;

preferably, the buffer bush includes: the rubber gasket comprises an inner gasket, an elastic body and an outer gasket, wherein the inner gasket is made of nylon, the elastic body is made of rubber, the outer gasket is made of metal, and the inner gasket, the elastic body and the outer gasket are connected into a whole through vulcanization;

preferably, the cab front suspension assembly further comprises a cab turnover protection structure, and is characterized in that the height dimension and the angle dimension of the limiting contact surface of the upper limiting block and the lower limiting block at the end part of the swing arm and the support seat are controlled so as to realize that the vehicle is limited without interference during normal running, and after the cab is turned to the extreme position, a gap is formed between the upper limiting block and the lower limiting block. If the limit of the turnover system fails at the moment, the cab can be continuously turned over to stop when the upper limit block and the lower limit block are in contact, and the upper limit block and the lower limit block are in surface contact during contact, so that the turnover protection effect of the cab is realized.

As shown in fig. 1 to 3, an embodiment of the present invention provides a cab front suspension assembly, including: the suspension assembly 1, the stabilizer bar 2 and the swing arm 3; the suspension assembly includes: support seat 11, upper bracket 12, lower carriage 13, coil spring 14, spacing subassembly 15, upper bracket 12 is used for connecting the driver's cabin longeron. The lower end of the support seat 11 is fixed on the frame 4, and the upper end of the support seat 11 is provided with a semicircular groove 111 and a lower limit block 112. Both ends of stabilizer bar 2 all have link 21, link 21 respectively with supporting seat 11 and spacing subassembly 15 cooperate to be connected, be used for right stabilizer bar 2 is spacing, avoids stabilizer bar 2 axial float. An upper limiting block 31 is arranged at one end of the swing arm 3 connected with the transverse stabilizer bar 2, the other end of the swing arm 3 is rotatably connected with one end of the upper bracket 12, the other end of the upper bracket 12 is rotatably connected with the upper part of the spiral spring 14, and the lower end of the spiral spring 14 is rotatably connected with the lower bracket 13; the lower bracket 13 is fixedly connected with the side surface of the frame 4 through bolts.

As shown in fig. 3, further, the limiting assembly includes: buffer bush 151, apron 152, end cover 153 and bolt 154, fixing bolt 155, buffer bush 151 overcoat in stabilizer bar link 21, with link 21 is clearance fit, can rotate relatively, apron 152 is half slot type stamping structure, buffer bush 151 outside inlay in supporting seat half slot 111, and pass through apron 152 and bolt 154 are fixed, and fixed back relative rotation can not, end cover 152 is fixed in through fixing bolt 155 the tip 211 of link 21 is used for right buffer bush 151 carries on spacingly. The buffer bushing 151 includes: interior packing ring 1511, elastomer 1512 and outer packing ring 1513, interior packing ring 1511, elastomer 1512 and outer packing ring 1513 link into an organic whole through the vulcanization, have improved the structural strength of cushion cover 151, buffer sleeve 151 overcoat in stabilizer bar link 21, outer packing ring 1513 is the metal material, inlay in supporting seat semicircular groove 111, through apron 152 and bolt 154 are fixed, and the tip passes through end cover 153 and fixing bolt 155 is fixed for it is spacing to carry out stabilizer bar axial, and this spacing mode simple structure, spacing reliability is higher to the cost is lower.

As shown in fig. 3, an upper limit block 31 is provided at an end of the swing arm 3, and a lower limit block 112 is provided on the support base 11, and it is preferable that the upper limit block 31 and the lower limit block 112 are controlled in height and limit contact surface angle so as to prevent interference during normal driving when the vehicle is limited, and that a gap is provided between the upper limit block 31 and the lower limit block 112 after the cab is turned over to the limit position. If the limit of the turnover system fails at this time, the cab can be continuously turned over until the upper limit block 31 and the lower limit block 112 are contacted, and the upper limit block and the lower limit block are in surface contact during contact, so that the turnover protection function of the cab is realized, and the turnover protection function of the cab can be realized by the structure. The problems of interference and falling caused by excessive overturning of the cab after the limiting failure of the cab overturning system are prevented.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation range shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims

1. The utility model provides a suspension assembly structure before commercial car driver's cabin which characterized in that: comprises a suspension assembly (1), a transverse stabilizer bar (2) and a swing arm (3);

the number of the suspension assemblies (1) is two, and each suspension assembly (1) comprises a supporting seat (11), an upper bracket (12), a lower bracket (13), a spiral spring (14) and a limiting assembly (15); the supporting seats (11) are arranged on two sides of the front end of the frame in a bilateral symmetry mode, and the upper bracket (12) is fixedly connected with left and right floor beams of the cab through bolts; the lower bracket (13) is fixedly connected with the side surfaces of the left frame and the right frame through bolts;

the two sets of swing arms (3) are fixed on the two sides of the transverse stabilizer bar (2) in a bilateral symmetry manner; one end of the swing arm (3) is connected with the transverse stabilizer bar (2), the other end of the swing arm (3) is rotatably connected with one end of the upper bracket (12), the other end of the upper bracket (12) is rotatably connected with one end of the spiral spring (14), and the other end of the spiral spring (14) is rotatably connected with the lower bracket (13);

2. The cab front suspension assembly structure according to claim 1, characterized in that:

the limiting assembly (15) comprises a buffer bush (151), a cover plate (152) and an end cover (153); the two ends of the transverse stabilizer bar (2) are respectively provided with a connecting end (21), the supporting seat (11) is provided with a semicircular groove (111), and the buffer bush (151) is sleeved on the stabilizer bar connecting end (21) and is in clearance fit with the connecting end (21) and can rotate relatively; the cover plate (152) is of a semicircular groove type stamping structure, the buffer bush (151) is externally embedded in the semicircular groove (111) of the supporting seat (11), the cover plate (152) and the bolt (154) are fixed and cannot rotate relatively after being fixed, and the end cover (153) is fixed at the end part (211) of the connecting end through a fixing bolt (155) and used for limiting the buffer bush (151).

3. The cab front suspension assembly structure according to claim 2, characterized in that:

buffer bush (151) are including interior packing ring (1511), elastomer (1512) and outer packing ring (1513), the material of interior packing ring (1511) is nylon, the material of elastomer (1512) is rubber, the material of outer packing ring (1513) is metal, interior packing ring, elastomer and outer packing ring link into an organic whole through the vulcanization.

4. The cab front suspension assembly structure according to claim 1, characterized in that:

one end of the swing arm (3) connected with the transverse stabilizer bar (2) is provided with an upper limiting block (31), and the supporting seat (11) is provided with a lower limiting block (112); the height size and the angle size of a limiting contact surface of the upper limiting block (31) and the lower limiting block (112) at the end part of the swing arm are controlled so as to realize that the vehicle is limited without interference during normal running, and a gap is reserved between the upper limiting block and the lower limiting block after the cab is overturned to the extreme position; if the limit of the turnover system fails at the moment, the cab can be continuously turned over to stop when the upper limit block and the lower limit block are in contact, and the upper limit block and the lower limit block are in surface contact during contact, so that the turnover protection effect of the cab is realized.