A shock absorbing mechanism and a mixer truck

Abstract

The present invention provides a shock absorbing mechanism and a mixer truck, wherein the shock absorbing mechanism comprises a deflection part, a support seat, a fixed seat, a bottom plate, a first shock absorbing member, a second shock absorbing member and a fastener. In the shock absorbing mechanism of this structure, when in use, the fixed seat can be directly used as the housing of the reducer; or the fixed seat can be used as a component of the shock absorbing mechanism and connected to the housing of the reducer; the support seat is connected to the mixer truck frame, and the gravity and vibration impact force of the mixer barrel are transmitted to the first shock absorbing member through the fixed seat, and the first shock absorbing member absorbs the horizontal and axial forces and vibration impact force caused by the gravity of the mixer barrel to ensure the smooth operation of the mixer truck; the fixed seat is fixedly connected to the deflection part, and the reducer is arranged on the deflection part. When the mixer barrel vibrates, the vibration impact force is transmitted to the reducer and the deflection part, and the deflection part deflects at any angle in the mounting groove of the support seat to absorb the vibration impact force of the mixer barrel. The shock absorbing mechanism has good impact resistance, which further improves the stability and safety of the mixer truck operation.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction of mixing drums, and in particular to a vibration reduction mechanism and a mixing truck. Background Art

[0002] Concrete mixer trucks are commonly used mechanical equipment in construction. The main bearing of the reducer and two rear support rollers support the weight of the entire mixing drum and concrete. Due to the significant weight of the mixing drum and concrete, vibrations occur throughout the drum during mixing. Furthermore, bumps caused by road potholes or inertial impacts from driver braking also act on the main bearing. The main bearing bears most of the load on the mixing drum, and it needs to withstand both radial and axial loads, requiring a certain degree of self-aligning capability. Therefore, the mixing drum uses self-aligning roller bearings as its main bearing to accommodate the wobbling during operation. However, this main bearing bears the weight of the mixing drum and the resulting vibrations and impacts, making it prone to damage and having a short lifespan. Moreover, the rigid connection between the main bearing and the reducer housing makes the reducer housing susceptible to cracking.

[0003] In the prior art, a shock absorbing mechanism is provided, a reducer is mounted on the shock absorbing mechanism, and the shock absorbing mechanism is then mounted on a frame of a mixer truck to absorb horizontal and axial forces and vibration shocks caused by the gravity of the mixer truck.

[0004] The existing shock-absorbing mechanism includes a first component, a first elastic component, a second component, a second elastic component and a base, which are arranged in sequence from top to bottom. The first component is connected to the reducer, the second component is connected to the frame, and the gravity of the mixing barrel is transmitted to the first elastic component. The first elastic component absorbs the horizontal and axial forces and vibration impacts caused by the gravity of the mixing barrel, but the reducer cannot achieve arbitrary angle deflection on the shock-absorbing mechanism. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the reducer of the mixer truck cannot achieve arbitrary angle deflection on the shock absorbing mechanism.

[0006] To this end, the present invention provides a shock absorbing mechanism, comprising

[0007] The bottom surface of the sway section is an arc surface;

[0008] The support seat has a mounting groove that matches the shape of the bottom surface of the deflection part, and the deflection part is rotatably arranged in the mounting groove; an annular sleeve portion is convexly provided on the outer periphery of the top of the mounting groove;

[0009] A fixing seat, provided on the top of the supporting seat and fixedly connected to the deflection portion;

[0010] A bottom plate, provided at the bottom of the support seat;

[0011] A first shock-absorbing member is provided between the fixing seat and the supporting seat;

[0012] A second shock-absorbing member is provided between the support seat and the bottom plate;

[0013] The fastener is sequentially passed through the bottom plate, the second shock absorbing member, the supporting seat, the first shock absorbing member and the fixing seat from bottom to top.

[0014] Optionally, in the above-mentioned shock absorbing mechanism, the top surface of the deflection portion is provided with an upward convex or inward concave fixing portion, and the bottom surface of the fixing seat is provided with a matching portion, and the matching portion is plugged into and interference-fitted with the fixing portion.

[0015] Optionally, the above-mentioned shock absorbing mechanism further includes

[0016] The third shock absorber has an upper portion of an inner circumferential wall abutting against an outer circumferential wall of the fixing seat, a lower portion of an inner circumferential wall abutting against an outer circumferential wall of the deflection portion, and an outer circumferential wall of the third shock absorber abutting against an inner circumferential wall of the annular sleeve portion.

[0017] Optionally, in the above-mentioned shock absorption mechanism, the third shock absorber includes...

[0018] a third metal plate having a circular cross-section; a positioning portion is provided on the third metal plate, and the positioning portion is provided on the annular sleeve portion to position the third shock absorber;

[0019] The third elastic member is arranged on the inner peripheral wall of the third metal plate, and the bottom of the third elastic member extends out of the third metal plate.

[0020] Optionally, in the above-mentioned shock absorbing mechanism, the third elastic member is made of rubber; the inner peripheral wall of the bottom of the third elastic member is provided with a first annular groove; and / or

[0021] The upper inner peripheral wall of the third elastic element is provided with multiple deformation grooves at intervals.

[0022] Optionally, the above-mentioned shock absorption mechanism further includes a wear-bearing component disposed between the bottom wall of the mounting groove and the bottom surface of the sway portion.

[0023] Optionally, in the above-mentioned shock absorbing mechanism, the bottom wall of the mounting groove is provided with a slot; the bearing assembly includes

[0024] Wear pad with a plug-in hole in the middle;

[0025] The two ends of the wear-bearing column are respectively inserted into the slot and the insertion hole, and are used to limit the deflection of the wear-bearing pad relative to the installation groove.

[0026] Optionally, in the above-mentioned shock absorbing mechanism, the first shock absorbing member includes

[0027] Two groups of first metal components are arranged opposite to each other, each group of the first metal components comprises multiple layers of first metal plates spaced apart from each other, and first elastic members are provided between adjacent layers of the first metal plates;

[0028] A first connecting member, whose two ends are respectively connected to the first metal components on both sides; and / or

[0029] The second shock-absorbing component includes a second elastic component and a second metal plate disposed at the bottom of the second elastic component.

[0030] Optionally, in the above-mentioned shock absorbing mechanism, a positioning boss is provided at the bottom of the first metal component, and a positioning groove cooperating with the positioning boss is provided on the top surface of the support seat.

[0031] The present invention provides a mixer truck, comprising any one of the above-mentioned shock absorbing mechanisms.

[0032] The technical solution of the present invention has the following advantages:

[0033] 1. The shock-absorbing mechanism provided by the present invention, when in use, the fixed seat can directly serve as the housing of the reducer; or the fixed seat can be used as a component of the shock-absorbing mechanism and connected to the housing of the reducer; the support seat is connected to the mixer truck frame, and the gravity and vibration impact force of the mixing barrel are transmitted to the first shock-absorbing member via the fixed seat, and the first shock-absorbing member absorbs the horizontal and axial forces and vibration impact force caused by the gravity of the mixing barrel to ensure the smooth operation of the mixer truck; the fixed seat is fixedly connected to the deflection part, and the reducer is arranged on the deflection part. When the mixing barrel vibrates, the vibration impact force is transmitted to the reducer and the deflection part, and the deflection part deflects at any angle in the mounting groove of the support seat to absorb the vibration impact force of the mixing barrel. The shock-absorbing mechanism has good impact resistance, which further improves the stability and safety of the mixer truck operation.

[0034] 2. The shock absorbing mechanism provided by the present invention also includes a third shock absorbing member, which absorbs the impact force of the deflection part and part of the vibration impact force of the mixing barrel, further improving the shock absorbing effect of the shock absorbing mechanism and ensuring the stability and safety of the operation of the mixer truck.

[0035] The portion of the third elastic member extending out of the third metal plate can be fully deformed after being impacted, thereby achieving a good shock absorption effect.

[0036] The setting of the deformation groove and the first annular groove reserves sufficient space for the deflection and deformation of the third elastic member between the fixed seat, the deflection part and the annular sleeve part, effectively preventing stress concentration when the third elastic member is deformed, and improving the service life of the third elastic member and the third shock-absorbing member.

[0037] 3. The shock-absorbing mechanism provided by the present invention has a wear-bearing assembly arranged on the wall of the installation groove, and the deflection part deflects on the wear-bearing assembly to avoid friction damage to the wall of the installation groove.

[0038] 4. The shock-absorbing mechanism provided by the present invention utilizes multiple layers of first metal plates to enhance the overall strength and load-bearing capacity of the first shock-absorbing component, ensuring that the first shock-absorbing component meets the required load-bearing strength. The first connector's ends connect to the first metal components on either side, connecting the two first metal components into a single integrated structure. Compared to existing first shock-absorbing component structures, this structure prevents moisture and dust from entering the shock-absorbing mechanism through the gaps between the first shock-absorbing components, providing a dust- and water-resistant barrier.

[0039] The first connecting member is made of rubber, and a first recessed portion is provided on the inner wall of the first connecting member to reserve space for deformation of the first connecting member, thereby avoiding stress concentration when the rubber is deformed and preventing the rubber from being damaged.

[0040] 5. The shock-absorbing mechanism provided by the present invention has a positioning boss at the bottom of the first metal component and a positioning groove on the top surface of the support base that mates with the positioning boss. When installing the first shock absorber, the positioning boss is inserted into the positioning groove, which facilitates the installation and positioning of the first shock absorber. At the same time, during use, the positioning boss is inserted and positioned in the insertion groove, which can prevent the first shock absorber from deforming and deviating.

[0041] 6. In the shock absorbing mechanism provided by the present invention, the provision of the second metal plate improves the bottom surface strength of the second shock absorbing member, prevents the second elastic member from being dented when the bolt is pre-tightened, and ensures the buffering effect of the second elastic member.

[0042] The second elastic member has a second recessed portion on its inner wall, which allows for deformation and prevents stress concentration during rubber deformation, potentially damaging the rubber. The second elastic member is closed, and the second metal plate has the same shape as the second elastic member. This integral structure prevents rainwater and dust from entering the damping mechanism through the gaps between the second damping members, making it dustproof and waterproof compared to existing split-piece second damping members. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A schematic diagram of the coordination between the damping mechanism and the reducer provided in Example 1 of the present invention;

[0045] Figure 2A cross-sectional view of the shock absorbing mechanism provided in Example 1 of the present invention;

[0046] Figure 3 for Figure 2 Schematic diagram of the middle support seat;

[0047] Figure 4 for Figure 2 Schematic diagram of the third shock absorber;

[0048] Figure 5 for Figure 2 a cross-sectional view of the third shock absorbing member;

[0049] Figure 6 for Figure 2 A schematic diagram of the first shock absorbing member;

[0050] Figure 7 A cross-sectional view of a first shock-absorbing member provided in an embodiment of the present invention;

[0051] Figure 8 for Figure 2 Schematic diagram of the second shock absorbing member;

[0052] Figure 9 4 is a cross-sectional view of a second shock-absorbing member provided in an embodiment of the present invention.

[0053] Description of reference numerals:

[0054] 1-Swaying part; 11-Fixing part; 2-Support base; 21-Annular sleeve part; 22-Grease injection hole; 23-Slot; 24-Mounting part; 3-Fixing base; 31-Mating part; 4-Base plate; 5-First shock absorber; 51-First metal component; 511-First metal plate; 512-Positioning boss; 53-First elastic component; 54-First connecting component; 541-First recess; 6-Second shock absorber; 611-Second recess; 61-Second elastic component; 62-Second metal plate; 7-Fastener; 8-Third shock absorber; 81-Third metal component; 811-Flanged part; 82-Third metal plate; 821-First annular groove; 822-Deformation groove; 91-Wearing pad; 92-Wearing column; 10-Reducer. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0058] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] Example 1

[0060] This embodiment provides a shock absorption mechanism, such as Figure 1 and Figure 2 As shown, it includes a deflection portion 1, a support seat 2, a fixed seat 3, a bottom plate 4, a first shock absorber 5, a second shock absorber 6 and a fastener 7. The bottom surface of the deflection portion 1 is an arc surface; the support seat 2 has a mounting groove that matches the shape of the bottom surface of the deflection portion 1, and the deflection portion 1 is rotatably arranged in the mounting groove; an annular sleeve portion 21 is convexly provided on the outer periphery of the top of the mounting groove; the fixed seat 3 is provided on the top of the support seat 2 and is fixedly connected to the deflection portion 1; the bottom plate 4 is provided at the bottom of the support seat 2; the first shock absorber 5 is provided between the fixed seat 3 and the support seat 2; the second shock absorber 6 is provided between the support seat 2 and the bottom plate 4; and the fastener 7 passes through the bottom plate 4, the second shock absorber 6, the support seat 2, the first shock absorber 5 and the fixed seat 3 in sequence from bottom to top.

[0061] In this shock absorption mechanism, the fixed base 3 can be directly used as the housing of the reducer 10; or the fixed base 3 can be used as a component of the shock absorption mechanism and connected to the housing of the reducer 10. The support base 2 is connected to the mixer truck frame. The weight of the mixing drum and the vibration impact force are transmitted to the first shock absorber 5 through the fixed base 3. The first shock absorber 5 absorbs the horizontal and axial forces caused by the weight of the mixing drum, as well as the vibration impact force, to ensure the smooth operation of the mixer truck. The fixed base 3 is fixedly connected to the swaying part 1. The reducer 10 is mounted on the swaying part 1. When the mixing drum vibrates, the vibration impact force is transmitted to the reducer 10 and the swaying part 1. The swaying part 1 sways at any angle in the mounting groove of the support base 2 to absorb the vibration impact force of the mixing drum. The shock absorption mechanism has good impact resistance, which further improves the stability and safety of the mixer truck operation.

[0062] See also Figure 1 and Figure 2 Ideally, the arc surface at the bottom of the sway section is part of a sphere, which facilitates the sway section to sway at any angle. The top surface of the sway section 1 is provided with a convex or concave fixing part 11, and the bottom surface of the fixing seat 3 is provided with a mating part 31. The mating part 31 is inserted into the fixing part 11 and has an interference fit. For example, the top surface of the sway section 1 is provided with a convex cylindrical fixing part 11, and the bottom surface of the fixing seat 3 is provided with a circular groove with a circular cross-section. The circular groove serves as the mating part 31, and the fixing part 11 is inserted into the circular groove and has an interference fit with the circular groove, so as to connect the fixing part 11 and the sway section 1 into one unit. The two are firmly fixed, ensuring that the reducer 10 sways synchronously with the sway section 1.

[0063] Further, see Figure 2 The shock absorption mechanism also includes a third shock absorber 8, which has a circular cross-section. The upper part of the inner peripheral wall of the third shock absorber 8 abuts against the outer peripheral wall of the fixed seat 3, the lower part of the inner peripheral wall of the third shock absorber 8 abuts against the outer peripheral wall of the swaying part 1, and the outer peripheral wall of the third shock absorber 8 abuts against the inner peripheral wall of the annular sleeve part 21. The third shock absorber 8 is sleeved outside the swaying part 1 and the fixed seat 3. When the swaying part 1 sways, it impacts the third shock absorber 8. The third shock absorber 8 absorbs the impact force of the swaying part 1 and part of the vibration impact force of the mixing tank, further improving the shock absorption effect of the shock absorption mechanism and ensuring the stability and safety of the mixer truck operation.

[0064] Further, see Figure 4 and Figure 5The third shock absorber 8 includes a third metal plate 82 and a third elastic member. The cross-sections of the third metal plate 82 and the third metal member 81 are both circular; a positioning portion is provided on the third metal plate 82, and the positioning portion is provided on the annular sleeve portion to position the third shock absorber. For example, the positioning portion is a flange portion 811 provided on the top of the third metal plate, and the flange portion 811 is protruded from the outer peripheral wall of the third metal plate 82. The flange portion 811 abuts against the top surface of the annular sleeve portion 21 to position the third shock absorber 8, preventing the third shock absorber 8 from moving downward, and the third shock absorber 8 is easy to install and position. The third elastic member is provided on the inner peripheral wall of the third metal plate 82, and the bottom of the third elastic member extends out of the third metal plate 82. The part of the third elastic member extending out of the third metal plate 82 can be fully deformed after being impacted, and the shock absorption effect is good.

[0065] Optionally, the third elastic member is made of rubber; a first annular groove 821 is provided on the inner peripheral wall at the bottom of the third elastic member, the third elastic member at the top of the first annular groove 821 abuts against the outer peripheral wall of the fixing seat 3, and the third elastic member at the bottom of the first annular groove 821 abuts against the outer peripheral wall of the deflection part 1. A plurality of deformation grooves 822 are provided at intervals on the inner peripheral wall of the third elastic member at the top of the first annular groove 821. Optimally, the deformation grooves 822 are rectangular grooves, and a plurality of deformation grooves 822 extend vertically and are arranged at equal intervals along the inner peripheral wall of the third elastic member. The provision of the deformation grooves 822 and the first annular groove 821 reserves sufficient space for the deflection and deformation of the third elastic member between the fixing seat 3, the deflection part 1 and the annular sleeve part 21, effectively preventing stress concentration when the third elastic member is deformed, and improving the service life of the third elastic member and the third shock absorber 8. For example, the third metal plate 82 is a steel plate, and the third shock absorber 8 is formed by vulcanization of rubber and the third metal plate 82, see Figure 5 The third elastic member also has a flange at its top, which abuts the top surface of the third metal plate 82. The third metal plate 82 is harder than the third elastic member, supporting the third elastic member and facilitating the installation and positioning of the third shock absorber 8 via the third metal plate 82. A limiting step is provided on the fixing seat 3, which engages the top surface of the third shock absorber 8 to limit the upward movement of the third elastic member. The limiting step works together with the flange 811 of the third metal plate 82 to limit the upper and lower positions of the third shock absorber 8, preventing it from moving up and down and ensuring its shock-absorbing effect on the deflection portion 1 and the fixing seat 3.

[0066] See also Figures 1 to 3 The shock-absorbing mechanism also includes a wear-bearing assembly, which is positioned between the bottom wall of the mounting slot and the bottom surface of the deflection unit 1. The support seat 2 is a metal casting, which is relatively soft and has poor wear resistance. The wear-bearing assembly is mounted on the mounting slot wall and made of a highly wear-resistant material, such as wear-resistant ceramic plate or highly wear-resistant plastic. The deflection unit 1 deflects on the wear-bearing assembly, preventing friction damage to the mounting slot wall.

[0067] Ideally, the bottom wall of the mounting groove is provided with a slot 23; the wear-bearing assembly includes a wear-bearing pad and a wear-bearing column 92. The wear-bearing pad is laid on the wall of the mounting groove, and has a insertion hole in its center; both ends of the wear-bearing column 92 are respectively inserted into the slot 23 and the insertion hole, used to limit the wear-bearing pad 91's sway relative to the mounting groove. For example, the wear-bearing column 92 is cylindrical, with a gap between its outer peripheral wall and the inner wall of the insertion hole of the wear-bearing pad 91. This gap ensures that the wear-bearing pad 91 can rotate relative to the wear-bearing column 92 and sway at a certain angle, but limits the wear-bearing pad 91's swaying distance outside the mounting groove to prevent it from sliding out of the mounting groove. A certain gap is left between the top surface of the wear-bearing pad 91 and the bottom surface of the third elastic element, facilitating the wear-bearing pad 91's swaying at a certain angle within the mounting groove.

[0068] See also Figure 2 and Figure 3 A grease injection hole 22 is provided on the support seat 2. The outer end of the grease injection hole 22 is connected to the outside world, and the inner end is connected to the slot 23 of the support seat 2. A through hole is provided in the middle of the wear column 92. When the shock absorber mechanism is in use, grease is added to the grease injection hole 22 through a grease gun. The grease flows to the bottom of the deflection part 1 to lubricate the deflection part 1 and the wear pad 91, reducing the wear of the two and improving the service life of the deflection part 1 and the wear pad 91.

[0069] Further, see Figure 6 and Figure 7The first shock absorber 5 includes two groups of first metal components 51, a first elastic member 53 and a first connecting member 54 arranged opposite to each other. Each group of the first metal components 51 has multiple layers of first metal plates 511 spaced apart from each other, and the first elastic member 53 is arranged between adjacent layers of the first metal plates 511; for example, the first metal plates 511 are steel plates, and the first elastic member 53 is rubber. The positions where the first elastic member 53 and the first metal plates 511 are located are the main load-bearing parts. Since the mixing barrel is heavy, the first shock absorber 5 bears a large load. The arrangement of the multiple layers of first metal plates 511 improves the overall strength and load-bearing capacity of the first shock absorber 5, so that the first shock absorber 5 meets the load-bearing strength requirements. The first connector 54's ends connect to the first metal components 51 on either side, connecting the two first metal components 51 into a single integral structure. The first shock absorber 5 is connected to the first connector 54 to form a single integral structure. The first shock absorber 5 of the existing structure includes two sets of elastic members spaced apart from each other. Compared to the existing first shock absorber 5 structure, this structure prevents moisture and dust from entering the interior of the shock absorber mechanism through the gap between the first shock absorbers 5, thus providing a dustproof and waterproof effect. The first connector 54 is made of rubber and is formed by vulcanizing rubber and multiple layers of steel. A first recessed portion 541 is defined within the inner wall of the first connector 54, providing space for deformation of the first connector 54 and preventing stress concentration and rubber damage during deformation. The top surface of the first shock absorber 5 abuts the fixed seat 3, and the bottom surface abuts the support seat 2. The first elastic member 53 and the first connector 54 are in a pre-compressed state, supporting the fixed seat 3 and withstanding the gravity and vibration impact forces transmitted from the mixing drum to the fixed seat 3, thus providing a floating support.

[0070] See also Figure 2 and Figure 6 The first metal component 51 has a positioning boss 512 at its bottom, and the support base 2 has a positioning groove on its top surface that mates with the positioning boss 512. When installing the first shock absorber 5, the positioning boss 512 inserts into the positioning groove, facilitating installation and positioning of the first shock absorber 5. Furthermore, during use, the positioning boss 512 inserts and locks into the slot, preventing the first shock absorber 5 from deforming or deviating. Optimally, the bottom surface of each set of first metal components 51 has multiple positioning bosses 512 evenly spaced apart, and the number and position of the positioning grooves on the top surface of the support base 2 match those of the positioning bosses.

[0071] See also Figure 8 and Figure 9The second shock absorber 6 includes a second elastic element 61 and a second metal plate 62 disposed at the bottom of the second elastic element 61. For example, the second elastic element 61 is rubber, and the second metal plate 62 is steel plate, with the rubber and steel plate vulcanized to form the second shock absorber 6. The fastener 7 is a bolt. The first shock absorber 5 and the second shock absorber 6 are provided with multiple mounting holes for the bolts to pass through. The top surface of the second elastic element 61 abuts against the bottom surface of the support 2, and the bottom surface of the second metal plate 62 abuts against the base plate 4. The second elastic element 61 is in a pre-compressed state and mainly bears the pressure formed by the bolt pre-tightening force and the sway of the fixed seat 3. The second shock absorber 6 does not bear the weight of the mixing tank. The setting of the second metal plate 62 improves the bottom surface strength of the second shock absorber 6, prevents the second elastic element 61 from being dented when the bolt is pre-tightened, and ensures the buffering effect of the second elastic element 61. The setting of the second shock absorber 6 allows the lower half of the base plate 4 and the bolt ( Figure 2 The lower half of the fastener 7 sways along with the support base 2 and the components above it, causing the upper and lower sections of the bolt to sway simultaneously, preventing the bolt from shearing off if only the upper part sways. See also Figure 2 The diameter of fastener 7 is smaller than the mounting hole diameter on the first fastener 7 and the second fastener 7, so as to leave enough room for the first elastic member 53 and the second elastic member 61 to swing, and to avoid the fastener 7 squeezing the elastic member.

[0072] Ideally, the second elastic member 61 is closed, and its inner wall is provided with a second recess 611. For example, there are two second recesses 611, which are disposed opposite each other on the inner wall of the second elastic member 61. The second recesses 611 provide space for the deformation of the second elastic member 61, avoiding stress concentration when the rubber deforms and preventing the rubber from being damaged. The second elastic member 61 is closed, and the second metal plate 62 has the same shape as the second elastic member 61. The second elastic member 61 is an integral structure. Compared with the existing split structure of the second shock absorber 6, it can prevent rainwater or dust from entering the shock absorption mechanism through the gaps between the second shock absorbers 6. The integral structure has a dustproof and waterproof function.

[0073] As a variation, the first elastic member 53, the second elastic member 61, and the third elastic member can be made of latex or spring steel, as long as they can absorb the horizontal or axial forces caused by the gravity of the mixing tank, or can absorb the impact of vibration. The first shock absorber 5 and the second shock absorber 6 can also be butterfly springs, and the third shock absorber 8 can be a spring coil or a rubber ring.

[0074] As a variation, the positioning portion can also be a protrusion provided on the outer peripheral wall of the third metal plate. Accordingly, the inner wall of the annular sleeve portion 21 is provided with a recessed portion, and the protrusion is inserted into the recessed portion to position the third shock absorber 8 on the annular sleeve portion.

[0075] Example 2

[0076] This embodiment provides a mixer truck, which includes the shock absorbing mechanism and the reducer 10 in Example 1. The reducer 10 is arranged on the shock absorbing mechanism. The outer edge of the support seat 2 is provided with a downwardly bent mounting portion 24, and the mounting portion 24 is provided with multiple threaded holes. Bolts pass through the mounting portion 24 and the threaded holes on the frame to fix the support seat 2 to the frame.

[0077] In a mixer truck with this structure, the fixed seat 3 is fixedly connected to the deflection part 1, and the reducer 10 is arranged on the deflection part 1. When the mixing drum vibrates, the vibration impact force is transmitted to the reducer 10 and the deflection part 1. The deflection part 1 deflects at any angle in the mounting groove of the support seat 2 to absorb the vibration impact force of the mixing drum. The shock-absorbing mechanism has good impact resistance, thereby improving the stability and safety of the mixer truck operation.

[0078] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A shock absorbing mechanism, characterized in that: include The deflection part (1) has a bottom surface which is a circular arc surface; The support seat (2) has a mounting groove that matches the shape of the bottom surface of the deflection portion (1), and the deflection portion (1) is rotatably arranged in the mounting groove; an annular sleeve portion (21) is convexly provided on the outer periphery of the top of the mounting groove; A fixed seat (3) disposed on the top of the support seat (2) and fixedly connected to the deflection portion (1); A bottom plate (4) is arranged at the bottom of the support seat (2); A first shock absorbing member (5) is arranged between the fixing seat (3) and the supporting seat (2); A second shock absorbing member (6) is arranged between the support seat (2) and the bottom plate (4); A fastener (7) is sequentially inserted through the bottom plate (4), the second shock absorbing member (6), the support seat (2), the first shock absorbing member (5) and the fixing seat (3) from bottom to top; Wherein, the arc surface is a part of a spherical surface.

2. The shock absorbing mechanism according to claim 1, characterized in that: The top surface of the deflection portion (1) is provided with a convex or concave fixing portion (11), and the bottom surface of the fixing seat (3) is provided with a matching portion (31), and the matching portion (31) is plugged into and interference-fitted with the fixing portion (11).

3. The shock absorbing mechanism according to claim 2, characterized in that: Also includes A third shock absorbing member (8), wherein the upper portion of the inner peripheral wall of the third shock absorbing member (8) abuts against the outer peripheral wall of the fixing seat (3), the lower portion of the inner peripheral wall of the third shock absorbing member (8) abuts against the outer peripheral wall of the deflection portion (1), and the outer peripheral wall of the third shock absorbing member (8) abuts against the inner peripheral wall of the annular sleeve portion (21).

4. The shock absorbing mechanism according to claim 3, characterized in that: The third shock absorbing member (8) comprises A third metal plate (82) having a circular cross section; a positioning portion is provided on the third metal plate (82), and the positioning portion is provided on the annular sleeve portion (21) to position the third shock absorbing member (8); The third elastic member is arranged on the inner peripheral wall of the third metal plate (82), and the bottom of the third elastic member extends out of the third metal plate (82).

5. The shock absorbing mechanism according to claim 4, characterized in that: The third elastic member is made of rubber; the inner peripheral wall at the bottom of the third elastic member is provided with a first annular groove (821); and / or A plurality of deformation grooves (822) are arranged at intervals on the inner peripheral wall of the upper portion of the third elastic member.

6. The shock absorbing mechanism according to any one of claims 1 to 5, characterized in that: It also comprises a wear bearing assembly arranged between the bottom wall of the installation groove and the bottom surface of the deflection portion (1).

7. The shock absorbing mechanism according to claim 6, characterized in that: The bottom wall of the installation groove is provided with a slot (23); the wear bearing assembly comprises A wear pad having a plug-in hole in the middle; The wear-bearing column (92) has two ends respectively inserted into the slot (23) and the insertion hole, and is used to limit the deflection of the wear-bearing pad (91) relative to the installation groove.

8. The shock absorbing mechanism according to any one of claims 1 to 5, characterized in that: The first shock absorbing member (5) comprises Two groups of first metal components (51) are arranged opposite to each other, each group of the first metal components (51) comprises multiple layers of first metal plates (511) arranged in an upper and lower interval, and first elastic members (53) are arranged between adjacent layers of the first metal plates (511); a first connecting member (54), the two ends of which are respectively connected to the first metal components (51) on both sides; and / or The second shock-absorbing member (6) comprises a second elastic member (61) and a second metal plate (62) arranged at the bottom of the second elastic member (61).

9. The shock absorbing mechanism according to claim 8, characterized in that: The bottom of the first metal component (51) is provided with a positioning boss (512), and the top surface of the support seat (2) is provided with a positioning groove that matches the positioning boss (512).

10. A mixer truck, characterized in that: The invention comprises the shock absorbing mechanism according to any one of claims 1 to 9.

Images