Balance shaft support mechanism

Abstract

The utility model provides a balance shaft support mechanism, which belongs to the technical field of automobile manufacturing and comprises a support body, a balance shaft mounting hole is arranged at the center of the support body, an upper end boss extending towards the direction of a balance shaft is arranged at the center of the top end of the support body, and a plurality of upper wing surface frame bolt holes are arranged on the upper end boss. A plurality of side frame bolt holes are respectively formed in two ends of the bracket body, and a plurality of lower thrust rod mounting holes are formed in the bottom of the bracket body. A lower end boss located below the lower thrust rod mounting hole is arranged at the bottom end of the support body, and a plurality of beam connecting plate mounting holes are formed in the bottom side of the lower end boss. Through the design of the upper end boss, the lower end boss, the cross beam connecting plate and the like, the structural strength, the torsional strength and the impact resistance of the bracket are remarkably improved, the assembly process is simplified, the production cost is reduced, and the bracket is suitable for popularization.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a balance shaft support mechanism. Background Technology

[0002] The main characteristics of off-highway mining dump trucks are short transport range, heavy load capacity, and extra-wide and extra-heavy weight. These trucks have a load capacity between 20 and 360 tons and are commonly used for loading with large electric or hydraulic shovels, traveling between mining and unloading points. Off-highway mining dump trucks primarily undertake heavy-duty short-distance transportation tasks and are the main transportation tool in open-pit mining production. They are mainly used in large-scale engineering projects such as cement plant ore transport, mining area ore and coal transport, road and bridge construction, as well as short-term operations such as foundation excavation and river closure in the construction of large and medium-sized hydropower stations.

[0003] Because off-highway mining dump trucks are mainly used in harsh environments such as large open-pit mines, and have huge load capacities, the requirements for suspension, especially for core suspension components such as the balance shaft assembly, are extremely stringent. The balance shaft bracket is a crucial structural component of the balance shaft assembly, playing a vital role in fixing the balance shaft assembly, connecting the lower thrust rod, and bearing the impact of large loads transmitted to the frame and leaf springs.

[0004] Currently, most balance shaft brackets are cast structures, running through both ends of the balance shaft. The lower end connects to the lower thrust rod, and the upper end is connected to the vehicle frame via bolts or rivets through an intermediate support. During vehicle operation, the balance shaft bracket experiences significant load impacts. The bolts or rivets connecting to the intermediate support can be subjected to substantial shear forces, causing them to loosen or break, affecting the overall strength of the balance shaft bracket and potentially even causing frame cracking, thus impacting the reliability of the entire vehicle. Furthermore, tightening the intermediate support bolts also affects the assembly efficiency and overall performance of the balance shaft. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing balance shaft brackets, which have poor overall strength and affect vehicle reliability, and to provide a balance shaft bracket mechanism.

[0006] This utility model is achieved through the following technical solution: a balance shaft support mechanism includes a support body, a balance shaft mounting hole at the center of the support body, and the support body is assembled to the end of the balance shaft through the balance shaft mounting hole; an upper boss extending towards the balance shaft is provided at the center of the top of the support body, and a plurality of upper wing frame bolt holes are provided on the upper boss; a plurality of side frame bolt holes are provided on the support body on both sides of the upper boss, that is, at both ends of the support body, and the support body is connected to the frame through the upper wing frame bolt holes and the side frame bolt holes; a plurality of lower thrust rod mounting holes are provided at the bottom of the support body, and the support body is connected to the lower thrust rod through the lower thrust rod mounting holes; a lower boss located below the lower thrust rod mounting holes is provided at the bottom end of the support body, and a plurality of crossbeam connecting plate mounting holes are provided on the bottom side of the lower boss, and the lower boss is connected to the crossbeam connecting plate through the crossbeam connecting plate mounting holes.

[0007] This utility model adopts an integral casting structure, which can effectively control production costs and development cycle. The connection to the frame via the upper flange bolt holes on the upper boss and the side frame bolt holes at both ends of the bracket body significantly increases the contact area with the frame, thereby improving the overall structural strength of the bracket and effectively preventing shear fracture of the intermediate support connecting bolts. The elimination of the intermediate support removes the need for separate mold making and manufacturing, simplifying the assembly process and improving the assembly efficiency of the balance shaft. Simultaneously, the design of the lower boss and the crossbeam connecting plate further enhances the overall torsional strength of the balance shaft assembly, preventing wear and cracking of the shaft and bracket caused by load impacts.

[0008] A further improvement of this invention is that the lower boss includes two symmetrically arranged boss bodies, and the mounting holes for the crossbeam connecting plate are arranged on the bottom side of the boss bodies. This design ensures the balance of the support under load and avoids stress concentration problems caused by uneven load distribution.

[0009] A further improvement of this invention is that a connecting boss is provided between the two boss bodies, with both ends of the connecting boss integrally connected to the center of each of the two boss bodies. This design further enhances the connection strength between the two boss bodies, ensuring that the boss bodies will not undergo relative displacement or deformation when subjected to large loads.

[0010] A further improvement of this invention is that two lower thrust rod mounting holes are provided, and the two lower thrust rod mounting holes are arranged symmetrically; the boss body is respectively located at the bottom center of the two lower thrust rod mounting holes, and the central axis of the crossbeam connecting plate mounting hole is perpendicular to the central axis of the lower thrust rod mounting hole. This arrangement ensures a more stable connection between the crossbeam connecting plate and the lower thrust rod, thereby improving the torsional strength of the overall structure.

[0011] A further improvement of this invention is that a number of spaced reinforcing ribs are provided between the upper boss and the support body. These reinforcing ribs are integrally connected to the upper boss and the support body, and have a smooth transition. This reinforcing rib design effectively avoids stress concentration and prevents the support from cracking due to load impact.

[0012] A further improvement of this utility model is that several mounting cavities are respectively provided on the bracket body on both sides of the upper boss, that is, at both ends of the bracket body, and the side frame bolt holes are arranged inside the mounting cavities. This mounting cavity structure allows the bracket as a whole to form a box-shaped structure, which enhances the structural strength of the bracket body and avoids bolt loosening or breakage caused by external impact or vibration.

[0013] A further improvement of this invention is that the top side of the upper boss is higher than the top side of the bracket body, so that a stepped structure can be formed between the upper boss and the bracket body. This stepped structure not only increases the contact area between the bracket and the frame, but also further enhances the connection stability between the bracket and the frame. At the same time, the design of the stepped structure also facilitates installation and disassembly, simplifies the assembly process, and improves assembly efficiency.

[0014] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0015] 1. This utility model adopts a heat-fit connection method. The bracket body forms an interference fit with the balance shaft through the balance shaft mounting hole, thereby ensuring the stability between the bracket and the shaft, and thus improving the reliability and firmness of the overall structure of the bracket body.

[0016] 2. This utility model connects to the frame through the upper wing frame bolt holes provided on the upper boss and the side frame bolt holes provided at both ends of the bracket body, which greatly increases the contact area with the frame, thereby improving the overall structural strength of the bracket and effectively avoiding shearing breakage of the intermediate support connecting bolts.

[0017] 3. This utility model eliminates the intermediate support, thereby eliminating the need for separate mold making and manufacturing of the intermediate support, simplifying the assembly process, and improving the assembly efficiency of the balance shaft.

[0018] 4. This utility model further enhances the overall torsional strength of the balance shaft assembly by designing the lower boss and the crossbeam connecting plate, thus avoiding wear and cracking of the shaft and bracket caused by load impact. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 2 This is a cross-sectional view of the support body according to a specific embodiment of the present utility model.

[0022] Figure 3 This is an assembly demonstration diagram of a specific embodiment of this utility model.

[0023] In the diagram: 1. Bracket body; 101. Balance shaft mounting hole; 102. Side frame bolt hole; 103. Lower thrust rod mounting hole; 104. Mounting cavity; 2. Upper boss; 201. Upper wing frame bolt hole; 3. Boss body; 301. Crossbeam connecting plate mounting hole; 4. Connecting boss; 5. Reinforcing rib; 6. Balance shaft; 7. Crossbeam connecting plate. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] Please refer to the attached document. Figure 1 , 2 3. Referring to specific embodiments, the following description is provided: The balance shaft support mechanism of this utility model includes a support body 1. Compared with existing balance shaft supports, the support body 1 adopts an integral casting structure and is T-shaped. A balance shaft mounting hole 101 is provided at the center of the support body 1, and the support body 1 is assembled to the end of the balance shaft 6 through the balance shaft mounting hole 101. Using a heat-fit connection, the support body 1 and the balance shaft 6 form an interference fit through the balance shaft mounting hole 101, thereby ensuring the stability between the support and the shaft, and thus improving the reliability and robustness of the overall structure of the support body 1.

[0026] A top boss 2 extending towards the balance shaft 6 is provided at the center of the top of the bracket body 1. The top boss 2 has several upper wing frame bolt holes 201 arranged in a double row. Several side frame bolt holes 102 are provided on both sides of the bracket body 1 (i.e., at both ends of the bracket body 1). The bracket body 1 is connected to the frame through the upper wing frame bolt holes 201 and the side frame bolt holes 102.

[0027] The upper flange 2 has upper frame bolt holes 201 for connecting the bracket body 1 to the frame with bolts. This design increases the contact area between the bracket and the frame, improving the stability and impact resistance of the connection. Meanwhile, the side frame bolt holes 102 at both ends of the bracket body 1 are used to further connect the bracket body 1 to the frame with bolts, enhancing the connection strength between the bracket and the frame and preventing loosening due to vibration or impact.

[0028] The bottom of the bracket body 1 is provided with several thrust rod mounting holes 103, through which the bracket body 1 is connected to the thrust rod. The function of the thrust rod is to transmit the thrust of the vehicle and ensure that the vehicle remains stable during driving. Through the thrust rod mounting holes 103, the bracket body 1 can be firmly connected to the thrust rod, enhancing the overall torsional strength of the balance shaft assembly.

[0029] The bottom end of the bracket body 1 is provided with a lower boss located below the lower thrust rod mounting hole 103. Several crossbeam connecting plate mounting holes 301 are provided on the bottom side of the lower boss. The lower boss is connected to a crossbeam connecting plate 7 through the crossbeam connecting plate mounting holes 301. The crossbeam connecting plate mounting holes 301 on the lower boss are used to connect the crossbeam connecting plate 7. The function of the crossbeam connecting plate 7 is to connect the bracket body 1 at both ends of the balance shaft 6, further enhancing the overall torsional strength of the balance shaft assembly and preventing wear and cracking of the shaft and bracket caused by load impact.

[0030] This utility model adopts an integral casting structure, which can effectively control production costs and development cycle. The upper wing frame bolt holes 201 provided on the upper boss 2 and the side frame bolt holes 102 provided at both ends of the bracket body 1 are connected to the frame, which greatly increases the contact area with the frame, thereby improving the overall structural strength of the bracket and effectively avoiding shearing fracture of the intermediate support connecting bolts. The intermediate support is eliminated, thereby eliminating the separate mold opening and manufacturing work of the intermediate support, simplifying the assembly process and improving the assembly efficiency of the balance shaft 6. At the same time, the design of the lower boss and the crossbeam connecting plate 7 further enhances the overall torsional strength of the balance shaft assembly and avoids wear and cracking of the shaft and bracket caused by load impact.

[0031] In one embodiment, the lower boss includes two symmetrically arranged boss bodies 3, and two crossbeam connecting plate mounting holes 301 are provided and symmetrically arranged on the bottom side of the boss bodies 3. This design ensures the balance of the bracket under force and avoids stress concentration problems caused by uneven force distribution.

[0032] In one embodiment, a connecting boss 4 is provided between the two boss bodies 3, and the two ends of the connecting boss 4 are integrally connected to the center of the two boss bodies 3 respectively. This design further enhances the connection strength between the two boss bodies 3, ensuring that the boss bodies 3 will not undergo relative displacement or deformation when subjected to large loads.

[0033] In one embodiment, two lower thrust rod mounting holes 103 are provided, and the two lower thrust rod mounting holes 103 are arranged symmetrically. The boss body 3 is respectively located at the bottom center of the two lower thrust rod mounting holes 103, and the central axis of the crossbeam connecting plate mounting hole 301 is perpendicular to the central axis of the lower thrust rod mounting hole 103. This arrangement ensures a more stable connection between the crossbeam connecting plate 7 and the lower thrust rod, thereby improving the torsional strength of the overall structure.

[0034] In one embodiment, a plurality of spaced reinforcing ribs 5 are provided between the upper boss 2 and the support body 1. The reinforcing ribs 5 are integrally connected to the upper boss 2 and the support body 1, and the reinforcing ribs 5 have a smooth transition. This design of the reinforcing ribs 5 can effectively avoid stress concentration and prevent the support from cracking due to load impact.

[0035] In one embodiment, several mounting cavities 104 are respectively provided on the bracket body 1 on both sides of the upper boss 2, that is, at both ends of the bracket body 1. The side frame bolt holes 102 are arranged inside the mounting cavities 104. This structure of the mounting cavities 104 enables the bracket as a whole to form a box-shaped structure, which enhances the structural strength of the bracket body 1 and avoids bolt loosening or breakage caused by external impact or vibration.

[0036] In one embodiment, the top side of the upper boss 2 is higher than the top side of the bracket body 1, so that a stepped structure can be formed between the upper boss 2 and the bracket body 1. This stepped structure not only increases the contact area between the bracket and the frame, but also further enhances the connection stability between the bracket and the frame. At the same time, the design of the stepped structure also facilitates installation and disassembly, simplifies the assembly process, and improves assembly efficiency.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A counter shaft support mechanism comprising a support body (1), characterized in that, The support body (1) is provided with a balance shaft mounting hole (101) at the center, and the support body (1) is assembled at the end of the balance shaft (6) through the balance shaft mounting hole (101); the support body (1) is provided with an upper end boss (2) extending towards the balance shaft (6) at the center of the top end, and a plurality of upper wing surface frame bolt holes (201) are arranged on the upper end boss (2); a plurality of side surface frame bolt holes (102) are arranged on the support body (1) on both sides of the upper end boss (2), that is, at both ends of the support body (1), and the support body (1) is connected with the frame through the upper wing surface frame bolt holes (201) and the side surface frame bolt holes (102); the bottom of the support body (1) is provided with a plurality of lower push rod mounting holes (103), and the support body (1) is connected with the lower push rod through the lower push rod mounting holes (103); the bottom end of the support body (1) is provided with a lower end boss below the lower push rod mounting hole (103), and the bottom side of the lower end boss is provided with a plurality of beam connecting plate mounting holes (301), and the lower end boss is connected with the beam connecting plate (7) through the beam connecting plate mounting holes (301).

2. A gimbal mechanism according to claim 1, wherein The lower end boss includes two symmetrically arranged boss bodies (3), and the beam connecting plate mounting holes (301) are arranged on the bottom side of the boss body (3).

3. A gimbal mechanism according to claim 2, wherein Two boss bodies (3) are provided with a connecting boss (4) therebetween, and the two ends of the connecting boss (4) are integrally connected with the centers of the two boss bodies (3), respectively.

4. A gimbal mechanism according to claim 3, wherein The lower push rod mounting hole (103) is provided with two, and the two lower push rod mounting holes (103) are symmetrically arranged; the boss body (3) is arranged at the center of the bottom side of the two lower push rod mounting holes (103), respectively, and the central axis of the beam connecting plate mounting hole (301) is perpendicular to the central axis of the lower push rod mounting hole (103).

5. A gimbal mechanism according to claim 1 or 4, wherein A plurality of reinforcing ribs (5) are arranged between the upper end boss (2) and the support body (1), and the reinforcing ribs (5) are integrally connected with the upper end boss (2) and the support body (1).

6. A gimbal mechanism according to claim 5, wherein, The reinforcing rib (5) is treated with smooth transition.

7. A gimbal mechanism according to claim 6, wherein The support body (1) on both sides of the upper end boss (2), that is, at both ends of the support body (1), is provided with a plurality of mounting cavities (104), and the side surface frame bolt holes (102) are arranged inside the mounting cavities (104).

8. A gimbal mechanism according to claim 7, wherein, The top side of the upper end boss (2) is higher than the top side of the support body (1), so that a stepped structure can be formed between the upper end boss (2) and the support body (1).

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