Cab suspension device and vehicle
By using rubber shock absorbers and rubber bushings in the cab suspension system, the problem of swaying caused by insufficient spring stiffness was solved, resulting in better cushioning and a longer service life, thus improving ride comfort.
Patent Information
- Application Number
- CN202520425364.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional cab suspension systems use springs with insufficient stiffness, resulting in severe cab swaying on uneven road conditions, which affects ride comfort.
Rubber shock absorbers are used instead of springs, with a stiffness of over 15,000 N/mm. Rubber bushings are also fitted on the pivot shaft to mitigate rigid impacts, thereby improving the cushioning effect and service life of the suspension device.
It effectively reduces cab sway, improves ride comfort, extends the service life of the suspension system, and reduces noise generation.
Smart Images
Figure CN223721029U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle technical field especially cab suspension device and vehicle. BACKGROUND
[0002] Traditional commercial vehicle cab is directly rigidly connected with the frame, leading to that the road impact is directly transmitted to the cab, seriously affecting the comfort of the driver, with the increasing requirement of users on the ride comfort, the vehicle production enterprises pay more and more attention to the vibration problem of the cab.
[0003] Therefore, the cab suspension device is arranged between the cab and the frame, supports the cab and absorbs the vibration from the frame. When the vehicle encounters the impact of uneven road during driving, the suspension device of the cab suspension system can be used to absorb and attenuate, thereby improving the ride comfort.
[0004] In the prior art, the cab suspension device usually uses a spring as an energy-absorbing and shock-absorbing structure. Since the spring stiffness is only 45N / mm, in the case of large undulating road conditions, the cab is easily shaken greatly, causing discomfort of the people in the cab.
[0005] Therefore, there is an urgent need for a cab suspension device and vehicle to solve the above problems. SUMMARY
[0006] The utility model aims at providing a cab suspension device and vehicle to solve the problem that in the related art, the cab suspension device usually uses a spring as an energy-absorbing and shock-absorbing structure, and since the spring stiffness is only 45N / mm, in the case of large undulating road conditions, the cab is easily shaken greatly, causing discomfort of the people in the cab.
[0007] On the one hand, the utility model provides a cab suspension device, which comprises:
[0008] An upper suspension seat is arranged on the cab, and the upper suspension seat is provided with a first pivot hole;
[0009] A lower suspension assembly comprises a lower suspension seat and a rubber shock absorber, the rubber shock absorber is used to connect the frame and the lower suspension seat, the lower suspension seat is provided with a second pivot hole, and the first pivot hole and the second pivot hole are arranged oppositely;
[0010] A pivot assembly comprises a pivot shaft and a rubber bushing, the pivot shaft is arranged in the first pivot hole and the second pivot hole, and the rubber bushing is sleeved on the pivot shaft and located in the first pivot hole and / or the second pivot hole.
[0011] The rubber shock absorber comprises an upper rubber shock pad, a lower rubber shock pad, a connecting bolt and a connecting nut, one end of the connecting bolt sequentially penetrates the lower suspension seat, the upper rubber shock pad, the vehicle frame and the lower rubber shock pad, and the other end of the connecting bolt is screwed with the connecting nut.
[0012] The vehicle frame is provided with a through hole;
[0013] The upper rubber shock pad comprises an upper shock body and an upper limiting protrusion protruding from the upper shock body, the upper limiting protrusion is inserted into the through hole, and the upper shock body is located on one side of the vehicle frame along the axis of the through hole.
[0014] And / or, the lower rubber shock pad comprises a lower shock body and a lower limiting protrusion protruding from the lower shock body, the lower limiting protrusion is inserted into the through hole, and the lower shock body is located on the other side of the vehicle frame along the axis of the through hole.
[0015] The rubber shock absorber further comprises a shock pad, the shock pad is sleeved on the connecting bolt and located between the lower rubber shock pad and the connecting nut.
[0016] The upper suspension seat comprises an upper bottom plate and an upper pivot lug, the upper pivot lug is arranged on the upper bottom plate, and the upper pivot lug is provided with the first pivot hole;
[0017] The lower suspension seat comprises a lower bottom plate and two lower pivot lugs, the two lower pivot lugs are arranged on the lower bottom plate in a spaced manner, the two lower pivot lugs are respectively provided with the second pivot hole, and the upper pivot lug is inserted between the two lower pivot lugs.
[0018] The rubber bushing is arranged in the first pivot hole.
[0019] The inner wall of the first pivot hole and the outer peripheral wall of the rubber bushing are respectively provided with an annular groove and an annular protrusion around the axis of the first pivot hole, and the annular protrusion is inserted into the annular groove.
[0020] One end of the pivot shaft is provided with a stop ring around the axis of the pivot shaft, and the other end of the pivot shaft is provided with a pin hole along the radial direction of the pivot shaft.
[0021] The pivot assembly further comprises a pin, the pin is inserted into the pin hole, and the two lower pivot lugs are located between the stop ring and the pin.
[0022] As the preferred technical scheme of the cab suspension device, the pivot assembly further comprises two gaskets, the gaskets are sleeved on the pivot shaft, one of the gaskets is located between the blocking ring and one of the lower pivot lugs opposite to the blocking ring, and the other of the gaskets is located between the bolt and the other of the lower pivot lugs opposite to the bolt.
[0023] In another aspect, the utility model provides a vehicle, including cab, frame and cab suspension device in any scheme above, cab suspension device connects frame and cab elastically.
[0024] The utility model discloses the beneficial effects are:
[0025] The utility model provides a cab suspension device and vehicle, this cab suspension device includes upper suspension seat, lower suspension assembly and pivot assembly, and upper suspension seat sets up in cab, and upper suspension seat is provided with first pivot hole, lower suspension assembly includes lower suspension seat and rubber shock absorber, and rubber shock absorber is used for connecting frame and lower suspension seat, and lower suspension seat is provided with second pivot hole, and first pivot hole and second pivot hole are opposite setting, pivot assembly includes pivot axle and rubber bushing, and pivot axle is passed and is arranged in first pivot hole and second pivot hole, and rubber bushing is sleeved on pivot axle and is located in first pivot hole and / or second pivot hole. The vehicle of setting up this cab suspension device when driving, because the spring shock absorber is replaced for rubber shock absorber, and its rigidity reaches 15000N / mm above, and the undulating road condition buffering effect is better, effectively avoid the shake of cab, and the driver's ride comfort is improved. Meanwhile, rubber bushing is sleeved on pivot axle, to relieve the rigid impact between pivot axle and upper suspension seat or lower suspension seat, improve the service life of cab suspension device, further improve the driver's ride comfort. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 It is the assembly schematic view of frame, cab and cab suspension device in the utility model embodiment;
[0027] Fig. 2 It is the structure schematic view of cab suspension device in the utility model embodiment;
[0028] Fig. 3 It is the explosion schematic view of cab suspension device in the utility model embodiment.
[0029] In the drawing:
[0030] 100, frame; 200, cab;
[0031] 1, upper suspension seat; 11, upper bottom plate; 12, upper pivot lug; 121, first pivot hole;
[0032] 2, lower suspension assembly; 21, lower suspension seat; 211, lower bottom plate; 212, lower pivot ear; 2121, second pivot hole; 221, upper rubber damping pad; 2211, upper damping body; 2212, upper limiting protrusion; 222, lower rubber damping pad; 2221, lower damping body; 2222, lower limiting protrusion; 223, connecting bolt; 224, connecting nut; 225, damping washer;
[0033] 3, pivot assembly; 31, pivot shaft; 311, stop ring; 32, rubber bushing; 321, annular groove; 33, latch; 34, washer. DETAILED DESCRIPTION
[0034] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0035] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "above", "above" and "above" of the first feature relative to the second feature include the "directly above" and "obliquely above" of the first feature relative to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature relative to the second feature include the "directly below" and "obliquely below" of the first feature relative to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0036] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0038] like Figs. 1-3 As shown, this embodiment provides a cab suspension device, which includes an upper suspension seat 1, a lower suspension assembly 2, and a pivot assembly 3. The upper suspension seat 1 is disposed in the cab 200 and has a first pivot hole 121. The lower suspension assembly 2 includes a lower suspension seat 21 and a rubber shock absorber. The rubber shock absorber is used to connect the frame 100 and the lower suspension seat 21. The lower suspension seat 21 has a second pivot hole 2121. The first pivot hole 121 and the second pivot hole 2121 are arranged opposite to each other. The pivot assembly 3 includes a pivot shaft 31 and a rubber bushing 32. The pivot shaft 31 passes through the first pivot hole 121 and the second pivot hole 2121. The rubber bushing 32 is sleeved on the pivot shaft 31 and located in the first pivot hole 121 and / or the second pivot hole 2121. When a vehicle equipped with this cab suspension system is in motion, the replacement of spring shock absorbers with rubber shock absorbers, whose stiffness exceeds 15,000 N / mm, effectively absorbs most of the chassis vibrations when driving on uneven road conditions. Because the rubber shock absorbers themselves have a stiffness exceeding 15,000 N / mm, they effectively prevent cab 200 swaying, improving driver comfort. Simultaneously, a rubber bushing 32 is fitted on the pivot shaft 31 to mitigate rigid impact between the pivot shaft 31 and the upper or lower suspension seat 1, extending the service life of the cab suspension system, reducing noise generation from the cab 200 suspension, and further enhancing driver comfort.
[0039] Optionally, the axes of the first pivot hole 121 and the second pivot hole 2121 are located in the horizontal plane. In other embodiments, the axes of the first pivot hole 121 and the second pivot hole 2121 are set at an angle to the horizontal plane.
[0040] When maintenance is required on the equipment at the bottom of the cab 200, simply pull the pivot shaft 31 out from the first pivot hole 121 and the second pivot hole 2121, and the cab 200 can be separated from or deflected from the frame 100 to expose the equipment covered by the cab 200.
[0041] Optionally, the rubber shock absorber comprises an upper rubber shock pad 221, a lower rubber shock pad 222, a connecting bolt 223 and a connecting nut 224, one end of the connecting bolt 223 passes through the lower suspension seat 21, the upper rubber shock pad 221, the vehicle frame 100 and the lower rubber shock pad 222 in sequence, and the other end of the connecting bolt 223 is screwed with the connecting nut 224. In this embodiment, the other end of the connecting bolt 223 is screwed with the connecting nut 224, so that the lower suspension seat 21, the upper rubber shock pad 221, the vehicle frame 100 and the lower rubber shock pad 222 are tightly pressed in sequence. When the vehicle runs on a rough road, the cab 200 and the vehicle frame 100 shake relatively, and the force between the cab 200 and the vehicle frame 100 makes the connecting bolt 223 move relative to the vehicle frame 100, so that the upper rubber shock pad 221 or the lower rubber shock pad 222 elastically deforms, easily absorbing the force between the cab 200 and the vehicle frame 100, and relieving the shaking of the cab 200.
[0042] Optionally, the vehicle frame 100 is provided with a through hole; the upper rubber shock pad 221 comprises an upper shock body 2211 and an upper limiting protrusion 2212 protruding from the upper shock body 2211, the upper limiting protrusion 2212 is inserted into the through hole, and the upper shock body 2211 is located on one side of the vehicle frame 100 along the axis of the through hole; and / or, the lower rubber shock pad 222 comprises a lower shock body 2221 and a lower limiting protrusion 2222 protruding from the lower shock body 2221, the lower limiting protrusion 2222 is inserted into the through hole, and the lower shock body 2221 is located on the other side of the vehicle frame 100 along the axis of the through hole. In this embodiment, the upper rubber shock pad 221 comprises the upper shock body 2211 and the upper limiting protrusion 2212 protruding from the upper shock body 2211, and the lower rubber shock pad 222 comprises the lower shock body 2221 and the lower limiting protrusion 2222 protruding from the lower shock body 2221. The upper shock body 2211 and the lower shock body 2221 respectively have the effect of shock absorption, the upper limiting protrusion 2212 and the lower limiting protrusion 2222 are respectively inserted into the through hole from both ends of the through hole and tightly pressed against the inner wall of the through hole, thereby limiting the upper shock body 2211 and the lower shock body 2221, and coaxially arranging the upper shock body 2211 and the lower shock body 2221.
[0043] In other embodiments, only the upper rubber shock pad 221 can comprise the upper shock body 2211 and the upper limiting protrusion 2212 protruding from the upper shock body 2211, or only the lower rubber shock pad 222 can comprise the lower shock body 2221 and the lower limiting protrusion 2222 protruding from the lower shock body 2221.
[0044] Optionally, the rubber shock absorber further comprises a shock absorbing gasket 225, which is sleeved on the connecting bolt 223 and located between the lower rubber shock absorbing gasket 222 and the connecting nut 224. In the embodiment, since the radial dimension of the connecting nut 224 is small, when the lower rubber shock absorbing gasket 222 is deformed under pressure, the lower rubber shock absorbing gasket 222 is prone to uneven stress, and even the lower rubber shock absorbing gasket 222 is prone to being detached from the connecting nut 224. Therefore, the shock absorbing gasket 225 is arranged between the lower rubber shock absorbing gasket 222 and the connecting nut 224, which improves the uniformity of the stress of the lower rubber shock absorbing gasket 222 and prevents the lower rubber shock absorbing gasket 222 from being detached from the connecting nut 224.
[0045] Optionally, the upper suspension seat 1 comprises an upper bottom plate 11 and an upper pivot ear 12, the upper pivot ear 12 is arranged on the upper bottom plate 11, and the upper pivot ear 12 is provided with a first pivot hole 121; the lower suspension seat 21 comprises a lower bottom plate 211 and two lower pivot ears 212, the two lower pivot ears 212 are arranged on the lower bottom plate 211 in a spaced manner, and the two lower pivot ears 212 are respectively provided with a second pivot hole 2121, and the upper pivot ear 12 is inserted between the two lower pivot ears 212. In the embodiment, the pivot shaft 31 passes through one second pivot hole 2121, the first pivot hole 121 and the other second pivot hole 2121 in sequence, which improves the stability of the pivot connection of the upper suspension seat 1 and the lower suspension seat 21. Specifically, the upper suspension seat 1 and the lower suspension seat 21 are both castings.
[0046] Optionally, the rubber bushing 32 is arranged in the first pivot hole 121. In the embodiment, the rubber bushing 32 can alleviate the impact between the pivot shaft 31 and the upper suspension seat 1, and can also reduce the noise when the pivot shaft 31 and the upper suspension seat 1 relatively rotate.
[0047] In other embodiments, two rubber bushings 32 can also be arranged, and the two rubber bushings 32 are respectively arranged in the second pivot holes 2121.
[0048] In other embodiments, three rubber bushings 32 can also be arranged, one rubber bushing 32 is arranged in the first pivot hole 121, and the other two rubber bushings 32 are respectively arranged in the two second pivot holes 2121.
[0049] Optionally, the inner wall of the first pivot hole 121 and the outer peripheral wall of the rubber bushing 32 are respectively provided with an annular groove 321 around the axial direction of the first pivot hole 121 and an annular protrusion, and the annular protrusion is inserted into the annular groove 321. In the embodiment, the above arrangement makes the annular protrusion limit the rubber bushing 32, so as to prevent the rubber bushing 32 from being separated from the first pivot hole 121. Specifically, the inner wall of the first pivot hole 121 is provided with the annular protrusion, and the outer peripheral wall of the rubber bushing 32 is provided with the annular groove 321.
[0050] Optionally, one end of the pivot shaft 31 is provided with a blocking ring 311 around the axis of the pivot shaft 31, and the other end of the pivot shaft 31 is provided with a pin hole along the radial direction of the pivot shaft 31; the pivot assembly 3 further comprises a pin 33 inserted into the pin hole, and the two lower pivot ears 212 are located between the blocking ring 311 and the pin 33. In this embodiment, the cooperation of the pivot shaft 31 and the pin 33 prevents the pivot shaft 31 from being pulled out of the upper suspension seat 1 and the lower suspension seat 21. Optionally, the pin 33 is an O-shaped safety pin.
[0051] Optionally, the pivot assembly 3 further comprises two gaskets 34 sleeved on the pivot shaft 31, one gasket 34 is located between the blocking ring 311 and one of the lower pivot ears 212 opposite to the blocking ring 311, and the other gasket 34 is located between the pin 33 and the other lower pivot ear 212 opposite to the pin 33. In this embodiment, the gasket 34 blocks the pin 33 or the blocking ring 311, and when the pivot shaft 31 moves along the axial direction, the gasket 34 can prevent the pin 33 or the blocking ring 311 from entering the corresponding second pivot hole 2121, thereby preventing the pin 33 and the blocking ring 311 from failing to limit the pivot shaft 31.
[0052] The embodiment also provides a vehicle comprising a cab 200, a frame 100 and the cab suspension device in the above-mentioned scheme, and the cab suspension device elastically connects the frame 100 and the cab 200.
[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.
Claims
1. Cab suspension device for connecting a vehicle frame (100) and a cab (200), characterized in that The application relates to a vehicle frame suspension structure, which comprises the following parts: an upper suspension seat (1) arranged on a cab (200), wherein the upper suspension seat (1) is provided with a first pivot hole (121); a lower suspension assembly (2) comprising a lower suspension seat (21) and a rubber shock absorber used for connecting the vehicle frame (100) and the lower suspension seat (21), wherein the lower suspension seat (21) is provided with a second pivot hole (2121), and the first pivot hole (121) and the second pivot hole (2121) are oppositely arranged; a pivot assembly (3) comprising a pivot shaft (31) and a rubber bushing (32), wherein the pivot shaft (31) is arranged through the first pivot hole (121) and the second pivot hole (2121), and the rubber bushing (32) is arranged on the pivot shaft (31) and located in the first pivot hole (121) and / or the second pivot hole (2121).
2. The cab suspension device according to claim 1, characterized by The rubber shock absorber comprises an upper rubber shock absorbing pad (221), a lower rubber shock absorbing pad (222), a connecting bolt (223) and a connecting nut (224), one end of the connecting bolt (223) is sequentially arranged through the lower suspension seat (21), the upper rubber shock absorbing pad (221), the vehicle frame (100) and the lower rubber shock absorbing pad (222), and the other end of the connecting bolt (223) is screwed with the connecting nut (224).
3. The cab suspension device of claim 2, wherein The vehicle frame (100) is provided with a through hole. The upper rubber shock absorbing pad (221) comprises an upper shock absorbing body (2211) and an upper limiting protrusion (2212) arranged on the upper shock absorbing body (2211), the upper limiting protrusion (2212) is arranged in the through hole, and the upper shock absorbing body (2211) is located on one side of the vehicle frame (100) along the axis of the through hole. The lower rubber shock absorbing pad (222) comprises a lower shock absorbing body (2221) and a lower limiting protrusion (2222) arranged on the lower shock absorbing body (2221), the lower limiting protrusion (2222) is arranged in the through hole, and the lower shock absorbing body (2221) is located on the other side of the vehicle frame (100) along the axis of the through hole.
4. The cab suspension apparatus according to claim 2, characterized by The rubber shock absorber further comprises a shock absorbing washer (225) arranged on the connecting bolt (223) and located between the lower rubber shock absorbing pad (222) and the connecting nut (224).
5. The cab suspension apparatus of claim 1, wherein The upper suspension seat (1) comprises an upper bottom plate (11) and an upper pivot lug (12), the upper pivot lug (12) is arranged on the upper bottom plate (11), and the upper pivot lug (12) is provided with the first pivot hole (121). The lower suspension seat (21) comprises a lower bottom plate (211) and two lower pivot lugs (212), the two lower pivot lugs (212) are arranged on the lower bottom plate (211) at intervals, and the two lower pivot lugs (212) are respectively provided with the second pivot hole (2121), and the upper pivot lug (12) is arranged between the two lower pivot lugs (212).
6. The cab suspension device of claim 5, wherein The rubber bushing (32) is arranged in the first pivot hole (121).
7. The cab suspension device of claim 6, wherein An annular groove (321) is arranged on one of the inner wall of the first pivot hole (121) and the outer peripheral wall of the rubber bushing (32) around the axis of the first pivot hole (121), and an annular protrusion is arranged on the other, which is inserted into the annular groove (321).
8. The cab suspension apparatus of claim 5, wherein A stop ring (311) is arranged on one end of the pivot shaft (31) around the axis of the pivot shaft (31), and a pin hole is arranged on the other end of the pivot shaft (31) along the radial direction of the pivot shaft (31); The pivot assembly (3) further comprises a pin (33) inserted into the pin hole, and the two lower pivot ears (212) are located between the stop ring (311) and the pin (33).
9. The cab suspension device of claim 8, wherein The pivot assembly (3) further comprises two spacers (34) sleeved on the pivot shaft (31), one of the spacers (34) is located between the stop ring (311) and one of the lower pivot ears (212) opposite to the stop ring (311), and the other of the spacers (34) is located between the pin (33) and the other of the lower pivot ears (212) opposite to the pin (33).
10. Vehicle, characterized in that A cab (200), a frame (100) and the cab suspension device according to any one of claims 1-9, the cab suspension device elastically connecting the frame (100) and the cab (200).