Power transmission device suspension system

Abstract

The utility model discloses a power transmission device suspension system which comprises a power unit suspension and a transmission unit suspension. The transmission unit suspension comprises a transmission left suspension, a transmission right suspension and a transmission rear suspension which are arranged in a three-point mode, and the transmission unit suspension is used for positioning a falling cabin of a transmission unit transversely arranged in a vehicle body power cabin and limiting and supporting the transmission unit after falling into the cabin. The power unit suspension comprises two power front suspensions with the same structure and two power rear suspensions with the same structure, and the two power front suspensions and the two power rear suspensions are arranged at four points; the power unit suspension is used for positioning a falling cabin of a power unit longitudinally arranged in a vehicle body power cabin and limiting and supporting the power unit after falling into the cabin; according to the utility model, the suspension system of the power transmission device can quickly find the position in the falling process of a narrow power cabin, and the motion range of the power transmission device is effectively controlled within a target range while the support and vibration reduction effects are provided for the power transmission device.

Description

Technical Field

[0001] The utility model belongs to the technical field of special vehicle power transmission, and in particular relates to a power transmission device suspension system. Background Art

[0002] The power transmission device of special vehicles is a complex system, which includes auxiliary systems such as the engine, generator, electric transmission device, thermal management system, intake and exhaust system, and lubrication system. The power transmission device is designed to be integrated, and the power auxiliary system and electronic control system are integrated and mounted on the power transmission device, making the originally narrow power compartment even more tight and cramped. The power compartment space is small, and when the power transmission device is dropped into the compartment, the line of sight is blocked, and the position cannot be accurately found, which makes installation difficult. There is an urgent need for a power transmission device suspension system and installation method that can solve the problem of positioning the power transmission device when it is dropped into the compartment, and effectively control the movement displacement of the power transmission device to avoid dynamic interference between the power transmission device and the surrounding systems under driving conditions. Utility Model Content

[0003] In view of this, the utility model provides a power transmission device suspension system, which can enable the power transmission device suspension system to quickly find its position during the process of lowering the power compartment into a narrow space, thereby improving installation efficiency, and can provide support and vibration reduction for the power transmission device while effectively controlling the movement range of the power transmission device within a target range.

[0004] The utility model is realized by the following technical solutions:

[0005] A power transmission device suspension system comprises: a power unit suspension and a transmission unit suspension;

[0006] The transmission unit suspension comprises: a transmission left suspension, a transmission right suspension and a transmission rear suspension, wherein the transmission left suspension, the transmission right suspension and the transmission rear suspension are arranged at three points, the transmission left suspension and the transmission right suspension are arranged coaxially, and the axes of the transmission left suspension and the transmission right suspension are arranged transversely of the vehicle body power compartment, and the transmission rear suspension is located between the transmission left suspension and the transmission right suspension; the transmission left suspension, the transmission right suspension and the transmission rear suspension are used to position the transmission unit arranged transversely in the vehicle body power compartment when it is dropped into the compartment, and to limit and support the transmission unit after it is dropped into the compartment;

[0007] The power unit suspension includes two power front suspensions with the same structure and two power rear suspensions with the same structure. The two power front suspensions and the two power rear suspensions adopt a four-point arrangement. The two power front suspensions and the two power rear suspensions are distributed in a rectangular shape. The length direction of the rectangle is arranged along the longitudinal direction of the vehicle body power compartment. Among them, the two power front suspensions are closer to the transmission unit suspension than the two power rear suspensions. The four power suspensions are used to position the power unit arranged longitudinally in the vehicle body power compartment, and to limit and support the power unit after it is dropped into the compartment.

[0008] Further, the transmission left suspension comprises: two transmission left suspension elements, a transmission left support ring and a transmission suspension left attachment seat;

[0009] The two transmission left suspension elements are both pressed into the transmission left support ring by interference fit, and the two transmission left suspension elements are respectively located at two ends of the transmission left support ring; the transmission left suspension elements are used to support the transmission unit;

[0010] The bottom of the transmission left support ring is provided with a mounting hole, which is a threaded hole for connecting with the transmission suspension left attachment seat; and the outer circle of the lower half of the transmission left support ring where the mounting hole is located is provided with a positioning structure with a U-shaped cross section, and the U-shaped positioning structure is an outer circle wedge-shaped structure;

[0011] The bottom of the left auxiliary seat of the transmission suspension is fixed on the power compartment of the vehicle body, and the top of the left auxiliary seat of the transmission suspension is provided with an arc-shaped notch, the outer edge of the arc-shaped notch is an inner circular wedge-shaped structure, and the cross-section of the inner circular wedge-shaped structure is a trapezoid; the inner circular wedge-shaped structure cooperates with the outer circular wedge-shaped structure to realize the positioning and installation of the left auxiliary seat of the transmission suspension and the left transmission support ring; the center of the arc-shaped notch is provided with an auxiliary seat connecting hole, which is used to cooperate with the installation hole of the left transmission support ring to realize the connection between the left auxiliary seat of the transmission suspension and the left transmission support ring.

[0012] Further, the transmission right suspension comprises: two transmission right suspension elements, a transmission right support ring and a transmission suspension right attachment seat;

[0013] The transmission right suspension element and the transmission left suspension element have the same structure, and the transmission suspension right attachment seat and the transmission suspension left attachment seat have the same structure; based on the transmission left support ring, the transmission right support ring adds a transverse limit ring in the middle position of the inner circumference, and the transverse limit ring is located between the two transmission right suspension elements, and the transverse limit ring is used to limit the lateral movement of the transmission unit.

[0014] Furthermore, the transmission rear suspension comprises: an anti-torsion swing arm, a lower support and a transmission rear suspension attachment seat;

[0015] The anti-torsion swing arm comprises: a swing arm bracket and a bushing, one end of the swing arm bracket is provided with an upper mounting hole for connecting the transmission unit, the other end of the swing arm bracket is provided with a circular hole for installing the bushing, and the bushing is press-fitted into the circular hole; the center of the bushing is provided with a lower mounting hole along its axial direction;

[0016] The lower support is a U-shaped bracket structure, and each of the two side plates of the U-shaped bracket structure is processed with a lower support upper mounting hole for connecting the anti-torsion swing arm; the two lower support upper mounting holes are coaxial; and the lower support upper mounting hole is coaxial with the bushing of the anti-torsion swing arm, and the connection between the anti-torsion swing arm and the lower support is achieved by passing the connecting shaft through the lower support upper mounting hole and the lower mounting hole of the bushing; the top inner sides of the two side plates of the lower support are provided with upper lead-in angles; the bottom of the bottom plate of the lower support is provided with a guide boss and a lower support lower mounting hole that penetrates the bottom plate and the guide boss, and the lower mounting hole of the lower support is used to connect the transmission rear suspension attachment; the bottom of the guide boss is provided with a boss lead-in angle;

[0017] The bottom of the transmission rear suspension attachment is fixed on the vehicle body power compartment, a circular countersunk hole is provided on the top of the transmission rear suspension attachment, and an attachment guide angle is provided on the top of the circular countersunk hole, the circular countersunk hole is used to cooperate with the guide boss of the lower support to realize the positioning installation between the transmission rear suspension attachment and the lower support; an attachment lower mounting hole for connecting the lower support is provided at the center of the bottom of the circular countersunk hole, the attachment lower mounting hole is a waist-shaped through hole, the attachment lower mounting hole is opposite to the lower mounting hole of the lower support, and the connection between the transmission rear suspension attachment and the lower support is realized by passing bolts through the lower mounting hole of the lower support and the lower mounting hole of the attachment.

[0018] Further, the power front suspension includes: a power front suspension element and a power unit suspension front attachment;

[0019] The top of the power front suspension element is provided with a power front suspension upper mounting hole, and the bottom is provided with a guide boss for installation and positioning; the center of the guide boss is provided with a threaded hole for connecting with the power unit suspension front attachment seat; the bottom of the guide boss is provided with two mutually parallel planes, which serve as boss limit ends;

[0020] The bottom of the power unit suspension front attachment seat is fixed on the vehicle body power compartment, and a waist-shaped countersunk hole is provided on the top of the power unit suspension front attachment seat, and two opposite plane sides of the waist-shaped countersunk hole serve as the front attachment seat limiting ends; the waist-shaped countersunk hole and the front attachment seat limiting end are used to cooperate with the guide boss and boss limiting end of the power front suspension element to realize the positioning installation between the power unit suspension front attachment seat and the power front suspension element; the bottom of the waist-shaped countersunk hole is provided with a front attachment seat lower mounting hole for connecting with the power front suspension element, and the front attachment seat lower mounting hole is a circular hole, which is coaxial with the threaded hole of the power front suspension element, and the connection between the power unit suspension front attachment seat and the power front suspension element is realized by passing bolts through the front attachment seat lower mounting hole and the threaded hole of the power front suspension element.

[0021] Further, the power rear suspension comprises: a power rear suspension element and a power unit suspension rear attachment;

[0022] The power rear suspension element has the same structure as the power front suspension element. The power unit suspension rear attachment is based on the power unit suspension front attachment, and the round hole of the installation hole under the front attachment is replaced by a waist-shaped hole.

[0023] Beneficial effects:

[0024] (1) Aiming at the problem that the power compartment of special vehicles is small and compact, the power transmission cannot be accurately located when it is dropped into the compartment, and the installation is time-consuming and labor-intensive, the utility model provides a power transmission device suspension system, including a power unit suspension and a transmission unit suspension. The power unit suspension and the transmission unit suspension are both provided with a positioning structure, which can solve the problem that the power unit and the transmission unit are difficult to install when dropped into the compartment, so that the power transmission device suspension system can quickly find the correct position during the process of dropping into the narrow power compartment, thereby improving the installation efficiency; the power unit suspension and the transmission unit suspension are also provided with a limited position structure, which can provide support and vibration reduction for the power unit and the transmission unit, and can effectively control the movement range of the power unit and the transmission unit within the target range, that is, effectively control the movement displacement of the power unit and the transmission unit, improve the reliability of the power transmission device suspension system, and avoid interference between the power unit and the transmission unit and the surrounding system during the operation of the vehicle. The power transmission device suspension has a compact structure and reliable strength.

[0025] (2) The transmission left support ring / transmission right support ring of the utility model is provided with an outer circular wedge-shaped structure, and the transmission suspension left attachment seat / transmission suspension right attachment seat is provided with an inner circular wedge-shaped structure. The inner circular wedge-shaped structure cooperates with the outer circular wedge-shaped structure to facilitate the positioning and installation of the transmission left support ring / transmission right support ring and the transmission suspension left attachment seat / transmission suspension right attachment seat.

[0026] (3) The transmission right support ring of the transmission right suspension of the utility model is provided with a lateral limit retaining ring, which can limit the lateral movement of the transmission unit and realize the limitation of the transmission unit.

[0027] (4) The transmission rear suspension of the utility model is provided with an anti-torsion swing arm, which can effectively improve the anti-pitch capability of the transmission unit and control the movement displacement of the transmission unit under vehicle acceleration and braking conditions.

[0028] (5) The mounting hole under the rear attachment of the transmission rear suspension attachment of the utility model is a waist-shaped through hole, which can absorb the errors caused by the processing and assembly of the structural parts, and ensure that the transmission unit suspension is reliably connected and installed with the vehicle body; the mounting hole under the rear attachment of the power unit suspension rear attachment is a waist-shaped hole, which can absorb the errors caused by the processing and assembly of the structural parts, and ensure that the power unit suspension is reliably connected and installed with the vehicle body.

[0029] (6) When the transmission unit of the utility model is dropped into the cabin, the rear side of the transmission unit is positioned and installed by the cooperation between the guide boss of the lower support and the circular countersunk hole of the transmission rear suspension attachment seat; the boss lead-in angle at the bottom of the guide boss cooperates with the attachment lead-in angle at the top of the circular countersunk hole, which makes it easier to position and install the lower support and the transmission rear suspension attachment seat;

[0030] When the power unit of the utility model is dropped into the cabin, the guide boss of the power front suspension element cooperates with the waist-shaped countersunk hole of the power unit suspension front attachment seat for positioning and installation; the guide boss of the power front and rear elements cooperates with the waist-shaped countersunk hole of the power unit suspension rear attachment seat for positioning and installation; wherein, the boss limiting end of the power front suspension element cooperates with the front attachment seat limiting end of the power unit suspension front attachment seat, which is more convenient for positioning and installation of the power front suspension element and the power unit suspension front attachment seat; the boss limiting end of the power rear suspension element cooperates with the power The cooperation with the rear attachment seat limit end of the unit suspension rear attachment seat makes it easier to position and install the front and rear power elements and the power unit suspension rear attachment seat; and during the bolt tightening process, the boss limit end of the power front suspension element will constrain each other with the front attachment seat limit end of the power unit suspension front attachment seat, and the boss limit end of the power rear suspension element will constrain each other with the rear attachment seat limit end of the power unit suspension rear attachment seat, so as to limit the bolt tightening process, and the core shafts of the two power front suspension elements and the two power rear suspension elements will not damage the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural composition diagram of the utility model;

[0032] Figure 2 This is the structural diagram of the transmission left suspension;

[0033] Figure 3 This is the structural diagram of the transmission right suspension;

[0034] Figure 4 This is the structural composition diagram of the transmission rear suspension;

[0035] Figure 5 It is a structural schematic diagram of the transmission rear suspension attachment;

[0036] Figure 6 This is the structural composition diagram of the power front suspension;

[0037] Figure 7 It is a schematic diagram of the structure of the front attachment seat of the power unit suspension;

[0038] Figure 8 It is a schematic diagram of the structure of the rear attachment seat of the power unit suspension;

[0039] Among them, 1. transmission left suspension, 11. transmission left support ring, 12. transmission left suspension element, 111. outer circular wedge structure, 112. mounting hole;

[0040] 2. Transmission right suspension, 21. Transmission right support ring, 211. Transverse limit ring;

[0041] 3. Anti-torsion swing arm, 31. Swing arm bracket, 311. Upper mounting hole, 32. Bushing, 321. Lower mounting hole;

[0042] 4. Lower support, 41. Upper mounting hole of lower support, 42. Lower mounting hole of lower support, 43. Boss lead-in angle, 44. Upper lead-in angle;

[0043] 5. Transmission suspension left auxiliary seat, 51. Inner circle wedge structure, 52. Attachment seat connection hole, 53. Attachment seat weight reduction hole;

[0044] 6. Transmission rear suspension attachment, 61. Attachment seat introduction angle, 62. Attachment seat lower mounting hole;

[0045] 7. Power front suspension element, 71. Power front suspension upper mounting hole, 72. Boss limit end;

[0046] 8. Power unit suspension front attachment seat, 81. Front attachment seat limit end, 82. Front attachment seat lower mounting hole;

[0047] 9. Power unit suspension rear attachment seat, 91. Rear attachment seat limit end, 92. Rear attachment seat lower mounting hole. DETAILED DESCRIPTION

[0048] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0049] Embodiment 1:

[0050] In view of the arrangement mode that the transmission unit of the power transmission device of the special vehicle is arranged transversely at the front side of the vehicle body power compartment, and the power unit is arranged longitudinally at the right rear side of the vehicle body power compartment, this embodiment provides a power transmission device suspension system, including: a power unit suspension and a transmission unit suspension;

[0051] See attached Figure 1The transmission unit suspension comprises: a transmission left suspension 1, a transmission right suspension 2 and a transmission rear suspension. The transmission left suspension 1, the transmission right suspension 2 and the transmission rear suspension are arranged at three points, that is, the transmission left suspension 1 and the transmission right suspension 2 are arranged coaxially, and the axes of the transmission left suspension 1 and the transmission right suspension 2 are arranged transversely of the vehicle body power cabin, and the transmission rear suspension is located between the transmission left suspension 1 and the transmission right suspension 2; the transmission left suspension 1, the transmission right suspension 2 and the transmission rear suspension are used to position the transversely arranged transmission unit after the cabin is dropped, and to adjust the transmission unit after the cabin is dropped. Limiting and supporting; the power unit suspension includes two power front suspensions with the same structure and two power rear suspensions with the same structure, the two power front suspensions and the two power rear suspensions adopt a four-point arrangement, that is, the two power front suspensions and the two power rear suspensions are distributed in a rectangle, and the length direction of the rectangle is arranged along the longitudinal direction of the vehicle body power compartment, wherein the two power front suspensions are closer to the transmission unit suspension than the two power rear suspensions; the four power suspensions are used to position the longitudinally arranged power unit when it falls into the compartment, and to limit and support the power unit after it falls into the compartment.

[0052] For a better solution, see the attached Figure 2 The transmission left suspension 1 comprises: two transmission left suspension elements 12, a transmission left support ring 11 and a transmission suspension left attachment seat 5;

[0053] The two transmission left suspension elements 12 are both pressed into the transmission left support ring 11 by interference fit, and the two transmission left suspension elements 12 are respectively located at the two ends of the transmission left support ring 11; the transmission left suspension elements 12 are used to support the transmission unit;

[0054] The bottom of the transmission left support ring 11 is provided with a mounting hole 112, which is a threaded hole for connecting with the transmission suspension left attachment seat 5; and the outer circle of the lower half of the transmission left support ring 11 where the mounting hole 11 is located is provided with a positioning structure with a U-shaped cross section, and the U-shaped positioning structure is an outer circle wedge-shaped structure 111, that is, the two side plates of the U-shaped positioning structure are both wedge-shaped;

[0055] The bottom of the left transmission suspension attachment seat 5 is fixed on the vehicle body power compartment, and the top of the left transmission suspension attachment seat 5 is processed into an arc shape, that is, an arc-shaped notch is provided, and the outer edge of the arc-shaped notch is an inner circular wedge structure 51, and the cross-section of the inner circular wedge structure 51 is trapezoidal; the inner circular wedge structure 51 cooperates with the outer circular wedge structure 111 to realize the positioning and installation of the left transmission suspension attachment seat 5 and the left transmission support ring 11; an attachment connection hole 52 is provided in the center of the arc-shaped notch, which is used to cooperate with the installation hole 112 of the left transmission support ring 11 to realize the connection between the left transmission suspension attachment seat 5 and the left transmission support ring 11; and an attachment weight reduction hole 53 is provided at the bottom of the left transmission suspension attachment seat 5.

[0056] For a better solution, see the attached Figure 3, the transmission right suspension 2 comprises: two transmission right suspension elements, a transmission right support ring 21 and a transmission suspension right attachment seat;

[0057] The transmission right suspension element and the transmission left suspension element 12 have the same structure, and the transmission right attachment seat and the transmission left attachment seat 5 have the same structure; the transmission right support ring 21 is based on the transmission left support ring 11, and a lateral limit retaining ring 211 is added at the middle position of the inner circumference, and the lateral limit retaining ring 211 is located between the two transmission right suspension elements, and the lateral limit retaining ring 211 is used to limit the lateral movement of the transmission unit; specifically:

[0058] The two transmission right suspension elements are both pressed into the transmission right support ring 21 by interference fit, and the two transmission right suspension elements are respectively located at the two ends of the transmission right support ring 21; the transmission right suspension elements are used to support the transmission unit;

[0059] The bottom of the transmission right support ring 21 is provided with a mounting hole, which is a threaded hole for connecting with the transmission suspension right attachment seat; and the outer circle of the lower half of the transmission right support ring 21 where the mounting hole is located is provided with a positioning structure with a U-shaped cross section, and the U-shaped positioning structure is an outer circle wedge-shaped structure, that is, the two side plates of the U-shaped positioning structure are both wedge-shaped; a transverse limit retaining ring 211 is provided in the middle position of the inner circumference of the transmission right support ring 21, and the transverse limit retaining ring 211 is located between the two transmission right suspension elements, and the transverse limit retaining ring 211 is used to limit the lateral movement of the transmission unit;

[0060] The bottom of the right accessory seat of the transmission suspension is fixed on the power compartment of the vehicle body, and the top of the right accessory seat of the transmission suspension is processed into an arc shape, that is, an arc-shaped notch is provided. The outer edge of the arc-shaped notch is an inner circular wedge-shaped structure, and the cross-section of the inner circular wedge-shaped structure is a trapezoid; the inner circular wedge-shaped structure cooperates with the outer circular wedge-shaped structure to realize the positioning and installation of the right accessory seat of the transmission suspension and the right transmission support ring 21; an accessory seat connecting hole is provided in the center of the arc-shaped notch, which is used to cooperate with the installation hole of the right transmission support ring 21 to realize the connection between the right accessory seat of the transmission suspension and the right transmission support ring 21; and a weight reduction hole is provided at the bottom of the right accessory seat of the transmission suspension.

[0061] For a better solution, see the attached Figure 4-Figure 5 The transmission rear suspension comprises: an anti-torsion swing arm 3, a side washer 33, a lower support 4 and a transmission rear suspension attachment 6;

[0062] The anti-torsion swing arm 3 includes: a swing arm bracket 31 and a bushing 32. One end of the swing arm bracket 31 is provided with an upper mounting hole 311 for connecting the transmission unit, and the other end of the swing arm bracket 31 is provided with a circular hole for installing the bushing 32. The bushing 32 is press-fitted into the circular hole; the center of the bushing 32 is provided with a lower mounting hole 321 along its axial direction; the anti-torsion swing arm 3 can effectively improve the anti-pitch capability of the transmission unit and control the movement displacement of the transmission unit under vehicle acceleration and braking conditions.

[0063] The lower support 4 is a U-shaped bracket structure, and each of the two side plates of the U-shaped bracket structure is processed with a lower support upper mounting hole 41 for connecting the anti-torsion swing arm 3; the two lower support upper mounting holes 41 are coaxial; and the lower support upper mounting hole 41 is coaxial with the bushing 32 of the anti-torsion swing arm 3, and the connection between the anti-torsion swing arm 3 and the lower support 4 is realized by passing the connecting shaft through the lower support upper mounting hole 41 and the lower mounting hole 321 of the bushing 32; the side gasket 33 is installed between the lower support upper mounting hole 41 and the bushing 32; the top inner sides of the two side plates of the lower support 4 are provided with upper introduction angles 44 to facilitate the installation of the anti-torsion swing arm 3; the bottom of the bottom plate of the lower support 4 is provided with a guide boss and a lower support lower mounting hole 42 that penetrates the bottom plate and the guide boss, and the lower support lower mounting hole 42 is used to connect the transmission rear suspension attachment 6; the bottom of the guide boss is provided with a boss introduction angle 43;

[0064] The bottom of the transmission rear suspension attachment 6 is fixed on the vehicle body power compartment, a circular countersunk hole is opened on the top of the transmission rear suspension attachment 6, and an attachment introduction angle 61 is set on the top of the circular countersunk hole, and the circular countersunk hole is used to cooperate with the guide boss of the lower support 4 to realize the positioning and installation between the transmission rear suspension attachment 6 and the lower support 4; an attachment lower mounting hole 62 for connecting the lower support 4 is opened at the center of the bottom of the circular countersunk hole, and the attachment lower mounting hole 62 is a waist-shaped through hole, which is opposite to the lower mounting hole 42 of the lower support, and the connection between the transmission rear suspension attachment 6 and the lower support 4 is realized by passing bolts through the lower mounting hole 42 of the lower support and the attachment lower mounting hole 62.

[0065] For a better solution, see the attached Figure 6-Figure 7 , the power front suspension comprises: a power front suspension element 7 and a power unit suspension front attachment seat 8;

[0066] The top of the power front suspension element 7 is provided with a power front suspension upper mounting hole 71, and the bottom is provided with a guide boss for installation and positioning; the center of the guide boss is provided with a threaded hole for connecting with the power unit suspension front attachment 8; the bottom of the guide boss is provided with two mutually parallel planes, which serve as boss limit ends 72;

[0067] The bottom of the power unit suspension front attachment seat 8 is fixed on the vehicle body power compartment, and the top of the power unit suspension front attachment seat 8 is provided with a waist-shaped countersunk hole, and the two opposite plane sides of the waist-shaped countersunk hole serve as the front attachment seat limit ends 81; the waist-shaped countersunk hole and the front attachment seat limit ends 81 are used to cooperate with the guide boss and boss limit ends 72 of the power front suspension element 7 to realize the positioning installation between the power unit suspension front attachment seat 8 and the power front suspension element 7; the bottom of the waist-shaped countersunk hole is provided with a front attachment seat lower mounting hole 82 for connecting with the power front suspension element 7, the front attachment seat lower mounting hole 82 is a circular hole, coaxial with the threaded hole of the power front suspension element 7, and the connection between the power unit suspension front attachment seat 8 and the power front suspension element 7 is realized by passing bolts through the front attachment seat lower mounting hole 82 and the threaded hole of the power front suspension element 7.

[0068] In a preferred solution, the power rear suspension comprises: a power rear suspension element and a power unit suspension rear attachment seat 9;

[0069] The power rear suspension element has the same structure as the power front suspension element 7. The power unit suspension rear attachment 9 is based on the power unit suspension front attachment 8, and the round hole of the front attachment lower mounting hole 82 is modified into a waist-shaped hole. Figure 8 As shown; specifically:

[0070] The top of the power rear suspension element is provided with a power rear suspension upper mounting hole, and the bottom is provided with a guide boss for installation and positioning; the center of the guide boss is provided with a threaded hole for connecting with the power unit suspension rear attachment seat 9; the bottom of the guide boss is provided with two mutually parallel planes, which serve as boss limit ends;

[0071] The bottom of the power unit suspension rear attachment seat 9 is fixed on the vehicle body power compartment, and a waist-shaped countersunk hole is provided on the top of the power unit suspension rear attachment seat 9, and two opposite plane sides of the waist-shaped countersunk hole serve as rear attachment seat limit ends 91; the waist-shaped countersunk hole and the rear attachment seat limit ends 91 are used to cooperate with the boss limit ends of the power rear suspension element to realize the positioning and installation between the power unit suspension rear attachment seat 9 and the power rear suspension element; the bottom of the waist-shaped countersunk hole is provided with a rear attachment seat lower mounting hole 92 for connecting with the power rear suspension element, and the rear attachment seat lower mounting hole 92 is a waist-shaped hole, which is opposite to the threaded hole of the power rear suspension element, and the power unit suspension rear attachment seat 9 is connected to the power rear suspension element by passing bolts through the rear attachment seat lower mounting hole 92 and the threaded hole of the power rear suspension element.

[0072] Embodiment 2:

[0073] This embodiment provides a method for installing a power transmission device suspension system based on the embodiment 1, the method comprising: an installation method for a transmission unit suspension and an installation method for a power unit suspension;

[0074] The specific process of the installation method of the transmission unit suspension is as follows:

[0075] Initially, the two transmission left suspension elements 12 and the transmission left support ring 11 of the transmission left suspension 1 are connected to form an integral structure 1, and the transmission left support ring 11 and the transmission suspension left attachment 5 are not connected;

[0076] The two transmission right suspension elements of the transmission right suspension 2 and the transmission right support ring 21 are connected to form an integral structure 2, and the transmission right support ring 21 and the transmission suspension right attachment seat are not connected;

[0077] The anti-torsion swing arm 3, the side washer 33 and the lower support 4 of the transmission rear suspension are connected to form an integral structure three, and the lower support 4 and the transmission rear suspension attachment 6 are not connected;

[0078] The power front suspension element 7 and the power unit suspension front attachment 8 are not connected, and the power rear suspension element and the power unit suspension rear attachment 9 are not connected;

[0079] Step 1: Connect the transmission left suspension element 12 of the integral structure 1 and the transmission right suspension element of the integral structure 2 to the left and right mounting interfaces of the transmission unit respectively, connect the upper mounting hole 311 of the anti-torsion swing arm 3 of the integral structure 3 to the rear side of the transmission unit; and place the transmission suspension left attachment 5, the transmission suspension right attachment and the transmission rear attachment 6 in the vehicle body power compartment according to the required positions;

[0080] Step 2: After the connection between the integral structure 1, the integral structure 2, and the integral structure 3 and the transmission unit is completed, the transmission unit is hoisted to the front side of the power compartment, and the transmission left support ring 11 of the integral structure 1 is opposite to the transmission suspension left attachment 5, the transmission right support ring 21 of the integral structure 2 is opposite to the transmission suspension right attachment, and the lower support 4 of the integral structure 3 is opposite to the transmission rear attachment 6;

[0081] Step three, drop the transmission unit with the integral structure one, the integral structure two and the integral structure three into the cabin. During the drop process, the two sides of the transmission unit are positioned and installed by the cooperation of the outer circular wedge structure 111 of the transmission left support ring 11 and the inner circular wedge structure 51 of the transmission suspension left attachment 5, and the outer circular wedge structure of the transmission right support ring 21 and the inner circular wedge structure of the transmission suspension right attachment; at the same time, the rear side of the transmission unit is positioned and installed by the cooperation of the guide boss of the lower support 4 and the circular countersunk hole of the transmission rear suspension attachment 6; wherein, the boss lead-in angle 43 at the bottom of the guide boss cooperates with the attachment lead-in angle 61 at the top of the circular countersunk hole, which is more convenient for the positioning and installation of the lower support 4 and the transmission rear suspension attachment 6;

[0082] Step 4. After the cabin is lowered, use bolts from the bottom of the transmission suspension left attachment 5, the transmission suspension right attachment and the transmission rear suspension attachment 6 to fix the transmission left suspension 1, the transmission right attachment 2 and the transmission rear suspension to the vehicle body respectively; among them, the lower mounting hole 62 of the transmission rear suspension attachment 6 is a waist-shaped through hole, which can absorb the errors caused by the processing and assembly of the structural parts, and ensure that the transmission unit suspension is reliably connected and installed with the vehicle body.

[0083] The specific process of the installation method of the power unit suspension is as follows:

[0084] Initially, the power front suspension element 7 and the power unit suspension front attachment 8 are not connected, and the power rear suspension element and the power unit suspension rear attachment 9 are not connected;

[0085] Step 1: Connect and fix the two power front suspension elements 7 and the two power rear suspension elements to the power unit through their respective power front suspension upper mounting holes 71 and power rear suspension upper mounting holes; and place the two power unit suspension front attachments 8 and the two power unit suspension rear attachments 9 in the vehicle body power compartment according to the required positions;

[0086] Step 2: After installing the two power front suspension elements 7 and the two power rear suspension elements, the power unit is hoisted to the rear right side of the power cabin, and the two power front suspension elements 7 are aligned with the two power unit front suspension attachments 8, and the two power rear suspension elements are aligned with the two power unit rear suspension attachments 9;

[0087] Step three, drop the power unit with two front power suspension elements 7 and two rear power suspension elements into the cabin. During the drop process, the guide boss of the front power suspension element 7 cooperates with the waist-shaped countersunk hole of the front attachment seat 8 of the power unit suspension for positioning and installation; the guide bosses of the front and rear power elements cooperate with the waist-shaped countersunk hole of the rear attachment seat 9 of the power unit suspension for positioning and installation; wherein, the boss limiting end 72 of the front power suspension element 7 cooperates with the front attachment seat limiting end 81 of the front attachment seat 8 of the power unit suspension, which is more convenient for positioning and installation of the front power suspension element 7 and the front attachment seat 8 of the power unit suspension; the boss limiting end of the rear power suspension element cooperates with the rear attachment seat limiting end 91 of the rear attachment seat 9 of the power unit suspension, which is more convenient for positioning and installation of the front and rear power elements and the rear attachment seat 9 of the power unit suspension;

[0088] Step 4: After the cabin is lowered, the two power front suspension elements 7 and the two power rear suspension elements are fixed to the vehicle body with bolts from the bottom of the two power rear suspension elements and the two power unit suspension rear attachment seats 9; wherein, during the process of tightening the bolts, the boss limit end 72 of the power front suspension element 7 will be mutually constrained with the front attachment seat limit end 81 of the power unit suspension front attachment seat 8, and the boss limit end of the power rear suspension element will be mutually constrained with the rear attachment seat limit end 91 of the power unit suspension rear attachment seat 9, so as to limit the core shafts of the two power front suspension elements 7 and the two power rear suspension elements from rotating and damaging the rubber during the process of tightening the bolts;

[0089] Among them, the rear attachment lower mounting hole 92 of the power unit suspension rear attachment 9 is a waist-shaped hole, which can absorb the errors caused by the processing and assembly of the structural parts and ensure the reliable connection and installation of the power unit suspension and the vehicle body.

[0090] At this point, the transmission unit suspension and power unit suspension are installed.

[0091] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power transmission device suspension system, characterized in that: include: Power unit mount and transmission unit mount; The transmission unit suspension comprises: a transmission left suspension, a transmission right suspension and a transmission rear suspension, wherein the transmission left suspension, the transmission right suspension and the transmission rear suspension are arranged at three points, the transmission left suspension and the transmission right suspension are arranged coaxially, and the axes of the transmission left suspension and the transmission right suspension are arranged transversely of the vehicle body power compartment, and the transmission rear suspension is located between the transmission left suspension and the transmission right suspension; the transmission left suspension, the transmission right suspension and the transmission rear suspension are used to position the transmission unit arranged transversely in the vehicle body power compartment when it is dropped into the compartment, and to limit and support the transmission unit after it is dropped into the compartment; The power unit suspension includes two power front suspensions with the same structure and two power rear suspensions with the same structure. The two power front suspensions and the two power rear suspensions adopt a four-point arrangement. The two power front suspensions and the two power rear suspensions are distributed in a rectangular shape. The length direction of the rectangle is arranged along the longitudinal direction of the vehicle body power compartment. Among them, the two power front suspensions are closer to the transmission unit suspension than the two power rear suspensions. The four power suspensions are used to position the power unit arranged longitudinally in the vehicle body power compartment, and to limit and support the power unit after it is dropped into the compartment.

2. A power transmission device suspension system as claimed in claim 1, characterized in that: The transmission left suspension comprises: two transmission left suspension elements, a transmission left support ring and a transmission suspension left attachment seat; The two transmission left suspension elements are both pressed into the transmission left support ring by interference fit, and the two transmission left suspension elements are respectively located at two ends of the transmission left support ring; the transmission left suspension elements are used to support the transmission unit; The bottom of the transmission left support ring is provided with a mounting hole, which is a threaded hole for connecting with the transmission suspension left attachment seat; and the outer circle of the lower half of the transmission left support ring where the mounting hole is located is provided with a positioning structure with a U-shaped cross section, and the U-shaped positioning structure is an outer circle wedge-shaped structure; The bottom of the left auxiliary seat of the transmission suspension is fixed on the power compartment of the vehicle body, and the top of the left auxiliary seat of the transmission suspension is provided with an arc-shaped notch, the outer edge of the arc-shaped notch is an inner circular wedge-shaped structure, and the cross-section of the inner circular wedge-shaped structure is a trapezoid; the inner circular wedge-shaped structure cooperates with the outer circular wedge-shaped structure to realize the positioning and installation of the left auxiliary seat of the transmission suspension and the left transmission support ring; the center of the arc-shaped notch is provided with an auxiliary seat connecting hole, which is used to cooperate with the installation hole of the left transmission support ring to realize the connection between the left auxiliary seat of the transmission suspension and the left transmission support ring.

3. A power transmission device suspension system as claimed in claim 2, characterized in that: The transmission right suspension comprises: two transmission right suspension elements, a transmission right support ring and a transmission suspension right attachment seat; The transmission right suspension element and the transmission left suspension element have the same structure, and the transmission suspension right attachment seat and the transmission suspension left attachment seat have the same structure; based on the transmission left support ring, the transmission right support ring adds a transverse limit ring in the middle position of the inner circumference, and the transverse limit ring is located between the two transmission right suspension elements, and the transverse limit ring is used to limit the lateral movement of the transmission unit.

4. A power transmission device suspension system as claimed in claim 2 or 3, characterized in that: The transmission rear suspension comprises: an anti-torsion swing arm, a lower support and a transmission rear suspension attachment seat; The anti-torsion swing arm comprises: a swing arm bracket and a bushing, one end of the swing arm bracket is provided with an upper mounting hole for connecting the transmission unit, the other end of the swing arm bracket is provided with a circular hole for installing the bushing, and the bushing is press-fitted into the circular hole; the center of the bushing is provided with a lower mounting hole along its axial direction; The lower support is a U-shaped bracket structure, and each of the two side plates of the U-shaped bracket structure is processed with a lower support upper mounting hole for connecting the anti-torsion swing arm; the two lower support upper mounting holes are coaxial; and the lower support upper mounting hole is coaxial with the bushing of the anti-torsion swing arm, and the connection between the anti-torsion swing arm and the lower support is achieved by passing the connecting shaft through the lower support upper mounting hole and the lower mounting hole of the bushing; the top inner sides of the two side plates of the lower support are provided with upper lead-in angles; the bottom of the bottom plate of the lower support is provided with a guide boss and a lower support lower mounting hole that penetrates the bottom plate and the guide boss, and the lower mounting hole of the lower support is used to connect the transmission rear suspension attachment; the bottom of the guide boss is provided with a boss lead-in angle; The bottom of the transmission rear suspension attachment is fixed on the vehicle body power compartment, a circular countersunk hole is provided on the top of the transmission rear suspension attachment, and an attachment guide angle is provided on the top of the circular countersunk hole, the circular countersunk hole is used to cooperate with the guide boss of the lower support to realize the positioning installation between the transmission rear suspension attachment and the lower support; an attachment lower mounting hole for connecting the lower support is provided at the center of the bottom of the circular countersunk hole, the attachment lower mounting hole is a waist-shaped through hole, the attachment lower mounting hole is opposite to the lower mounting hole of the lower support, and the connection between the transmission rear suspension attachment and the lower support is realized by passing bolts through the lower mounting hole of the lower support and the lower mounting hole of the attachment.

5. A power transmission device suspension system as claimed in claim 1, characterized in that: The power front suspension comprises: a power front suspension element and a power unit suspension front attachment seat; The top of the power front suspension element is provided with a power front suspension upper mounting hole, and the bottom is provided with a guide boss for installation and positioning; the center of the guide boss is provided with a threaded hole for connecting with the power unit suspension front attachment seat; the bottom of the guide boss is provided with two mutually parallel planes, which serve as boss limit ends; The bottom of the power unit suspension front attachment seat is fixed on the vehicle body power compartment, and a waist-shaped countersunk hole is provided on the top of the power unit suspension front attachment seat, and two opposite plane sides of the waist-shaped countersunk hole serve as the front attachment seat limiting ends; the waist-shaped countersunk hole and the front attachment seat limiting end are used to cooperate with the guide boss and boss limiting end of the power front suspension element to realize the positioning installation between the power unit suspension front attachment seat and the power front suspension element; the bottom of the waist-shaped countersunk hole is provided with a front attachment seat lower mounting hole for connecting with the power front suspension element, and the front attachment seat lower mounting hole is a circular hole, which is coaxial with the threaded hole of the power front suspension element, and the connection between the power unit suspension front attachment seat and the power front suspension element is realized by passing bolts through the front attachment seat lower mounting hole and the threaded hole of the power front suspension element.

6. A power transmission device suspension system as claimed in claim 5, characterized in that: The power rear suspension comprises: a power rear suspension element and a power unit suspension rear attachment; The power rear suspension element has the same structure as the power front suspension element. The power unit suspension rear attachment is based on the power unit suspension front attachment, and the round hole of the installation hole under the front attachment is replaced by a waist-shaped hole.

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