Shock absorber for engineering machinery power system

Abstract

The utility model provides a shock absorber for an engineering machinery power system, which comprises a sleeve and is characterized by further comprising a limit portion, the limit portion comprises a limit ring and a limit shell which are integrally formed, one end of the sleeve is higher than the bottom end of the limit ring, and the other end of the sleeve is higher than the top of the limit shell. A rubber block is integrally formed at the position of the limiting part and the sleeve in an injection molding mode, the top of the rubber block is higher than the top of the limiting shell, a first groove is formed between the limiting shell and the rubber block and serves as a deformation space of the rubber block, and vibration generated by the power system is isolated through deformation of the rubber block in the deformation space. In the later use process, the frame only cuts rubber on the surface of the limiting part and cannot cut a rubber block between the limiting part and the sleeve, and therefore it is guaranteed that the rubber block is effective.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a shock absorber for a power system of an engineering machinery. Background Art

[0002] If the power system of an engineering machine adopts a rigid connection, the vibration generated by the engine or motor will be directly transmitted to the frame, and the vibration of the frame will be transmitted to the cab and other equipment, resulting in reduced comfort and damage to the equipment. At the same time, the rigid connectors will loosen due to vibration, causing the power system to detach from the frame and cause an accident. Therefore, the power system is connected to the frame through shock absorbers to reduce the transmission of vibration.

[0003] like Figure 1 As shown, the rubber block and sleeve of the conventional shock absorber are together. In actual use, the two shock absorbers are embedded in the frame holes, and the power system connecting frame is fixedly connected to the shock absorber along the axial direction of the sleeve through bolts, washers and nuts. At the same time, during the fixing process of the power system connecting frame, the rubber block is radially squeezed and deformed by the washers and nuts, resulting in a reduction in the deformation of the rubber block, and the vibration reduction performance of the rubber block cannot be effectively utilized. At the same time, during use, the frame is prone to cutting problems at the connection of the rubber block, resulting in failure of the rubber block. Utility Model Content

[0004] The utility model aims to provide a shock absorber for a power system of an engineering machinery, so as to overcome the deficiencies existing in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a shock absorber for an engineering machinery power system, comprising a sleeve and a limit part, wherein the limit part comprises an integrally formed limit ring and a limit shell, the height of one end of the sleeve is higher than the height of the bottom end of the limit ring, the height of the other end of the sleeve is higher than the height of the top of the limit shell, a rubber block is integrally injection-molded at the limit part and the sleeve, the top of the rubber block is higher than the top of the limit shell, and a groove is formed between the limit shell and the rubber block.

[0006] In the above scheme, the limiting ring part of the shock absorber is embedded in the frame hole, the shock absorbers are used in pairs, bolts are used to penetrate the sleeve, and gaskets are provided at both ends of the bolts. The bolts are used to install the power system bracket, and the power system bracket and the shock absorber are fixed by nuts and bolts. During the fixing process, the rubber block expands radially under the extrusion of the gasket. Since a groove one is provided between the limiting shell and the rubber block, the groove one is a deformation space of the rubber block. The rubber block is deformed in the deformation space to achieve isolation of the vibration generated by the power system. At the same time, the limiting part is a sheet metal part. In the later use process, the frame will only cut the rubber on the surface of the limiting part, but will not cut the rubber block between the limiting part and the sleeve, thereby ensuring the effectiveness of the rubber block.

[0007] As an improvement of a shock absorber for a power system of an engineering machinery according to the utility model, a second groove and a third groove are arranged on the top of the rubber block.

[0008] In the above scheme, in order to improve the vibration reduction effect of the rubber block, it is necessary to increase the deformation space of the rubber block. Grooves 2 and 3 are provided on the top of the rubber block. Grooves 2 and 3 are used to increase the deformation space of the rubber block, thereby further improving the vibration reduction effect of the rubber block.

[0009] As an improvement of the shock absorber for a power system of an engineering machinery of the utility model, rubber is arranged on the surface of the limiting ring.

[0010] In the above scheme, rubber is provided at the limiting ring so that the shock absorber can be interference fit with the frame hole, thereby preventing the shock absorber from falling from the frame hole during installation, making it convenient for operators to assemble the frame, motor connecting frame and shock absorber using bolts and nuts.

[0011] As an improvement of the shock absorber for a power system of an engineering machinery of the utility model, the limit shell is provided with a contact surface, and the contact surface is used for direct contact with the vehicle frame, and the limit shell is provided with rubber except for the contact surface.

[0012] In the above scheme, since the height of the rubber block is higher than the limiting part, under normal conditions, the gasket cannot collide with the limiting shell of the limiting part, but under extreme conditions, the limiting shell of the limiting part is collided with the gasket. Therefore, rubber is arranged on the limiting shell to cushion the impact of the gasket, thereby avoiding damage to both the gasket and the limiting shell due to rigid contact.

[0013] As an improvement of the shock absorber for a power system of an engineering machinery of the utility model, the limit shell is provided with an arc chamfer, so that the frame hole does not need to be chamfered, thus saving processing costs.

[0014] In the above solution, compared with the right-angle setting of the limiting shell, the arc-shaped chamfer setting of the limiting shell can provide a certain bending angle for the limiting shell and is not easy to break the limiting shell.

[0015] Compared with the prior art, the utility model has the following beneficial effects: groove one is a deformation space for the rubber block, and the rubber block is deformed in the deformation space to achieve vibration of the motor, and at the same time the limiting part is a sheet metal part. During later use, the frame will only cut the rubber on the surface of the limiting part, but will not cut the rubber block between the limiting part and the sleeve, thereby ensuring the effectiveness of the rubber block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the background technology;

[0018] Figure 2 This is a schematic diagram of the structure of the shock absorber and the frame (shock absorbers are used in pairs);

[0019] Figure 3 for Figure 2 AA section view

[0020] Figure 4 This is a schematic diagram of the structure of the shock absorber, the vehicle frame and the motor connecting frame (the shock absorbers are used in pairs).

[0021] Among them, 1. sleeve; 2. limit part; 21. limit ring; 22. limit shell; 3. rubber block; 4. groove one; 5. groove two; 6. groove three; 7. arc chamfer; 8. motor connecting frame; 9. gasket; 10. frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 2 to 4 As shown, a shock absorber for a power system of engineering machinery includes a sleeve 1 and a limiting portion 2, wherein the limiting portion 2 includes an integrally formed limiting ring 21 and a limiting shell 22, the height of one end of the sleeve 1 is higher than the height of the bottom end of the limiting ring 21, the height of the other end of the sleeve 1 is higher than the height of the top of the limiting shell 22, a rubber block 3 is integrally injection-molded at the limiting portion 2 and the sleeve 1, the top of the rubber block 3 is higher than the top of the limiting shell 22, and a groove 4 is formed between the limiting shell 22 and the rubber block 3.

[0024] The limiting ring 21 of the shock absorber is partially embedded in the hole of the frame 10. The shock absorbers are used in pairs. Bolts are used to penetrate the sleeve 1, and gaskets 9 are provided at both ends of the bolts. The bolts are used to install the motor bracket. The motor bracket and the shock absorber are fixed by nuts and bolts. During the fixing process, the rubber block 3 expands radially under the extrusion of the gasket 9. Since a groove 4 is provided between the limiting shell 22 and the rubber block 3, the groove 4 is a deformation space for the rubber block 3. The rubber block 3 is deformed in the deformation space to achieve vibration to the motor. At the same time, the limiting part 2 is a sheet metal part. During the later use, the frame 10 will only cut the rubber on the surface of the limiting part 2, but will not cut the rubber block 3 between the limiting part 2 and the sleeve 1, thereby ensuring the effectiveness of the rubber block 3.

[0025] The top of the rubber block 3 is provided with a second groove 5 and a third groove 6 .

[0026] In order to improve the vibration reduction effect of the rubber block 3, it is necessary to increase the deformation space of the rubber block 3. A second groove 5 and a third groove 6 are provided on the top of the rubber block 3. The second groove 5 and the third groove 6 are used to increase the deformation space of the rubber block 3, thereby further improving the vibration reduction effect of the rubber block 3.

[0027] The surface of the limiting ring 21 is provided with rubber.

[0028] By arranging rubber at the limiting ring 21 so that the shock absorber can be interference fit with the hole of the frame 10, the shock absorber is prevented from falling from the hole of the frame 10 during installation, making it convenient for operators to use bolts and nuts to assemble the frame 10, the motor connecting frame 8 and the shock absorber.

[0029] The limiting shell 22 is provided with a contact surface, and the contact surface is used for directly contacting with the frame 10 . The limiting shell 22 is provided with rubber except for the contact surface.

[0030] Since the height of the rubber block 3 is higher than the limiting part 2, under normal conditions, the gasket 9 cannot collide with the limiting shell 22 of the limiting part 2. However, under extreme conditions, the limiting shell 22 of the limiting part 2 is collided with the gasket 9. Therefore, rubber is provided on the limiting shell 22 to cushion the impact of the gasket 9, thereby avoiding damage to both the gasket 9 and the limiting shell 22 due to rigid contact.

[0031] The limiting shell 22 is provided with an arc chamfer 7 .

[0032] Compared with setting the limiting shell 22 at a right angle, setting the limiting shell 22 with an arc chamfer 7 can provide a certain bending angle for the limiting shell 22, and it is not easy to break the limiting shell 22, and the frame hole does not need to be chamfered, saving processing costs.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A shock absorber for a power system of an engineering machinery, comprising a sleeve, characterized in that: It also includes a limiting part, wherein the limiting part includes an integrally formed limiting ring and a limiting shell, the height of one end of the sleeve is higher than the height of the bottom end of the limiting ring, the height of the other end of the sleeve is higher than the height of the top of the limiting shell, a rubber block is integrally injection-molded at the limiting part and the sleeve, the top of the rubber block is higher than the top of the limiting shell, and a groove is formed between the limiting shell and the rubber block.

2. A shock absorber for a power system of an engineering machinery according to claim 1, characterized in that: The top of the rubber block is provided with a second groove and a third groove.

3. The shock absorber for a power system of an engineering machinery according to claim 1, characterized in that: The surfaces of the limiting rings are all provided with rubber.

4. The shock absorber for a power system of an engineering machinery according to claim 1, characterized in that: The limiting shell is provided with a contact surface, and the contact surface is used for direct contact with the frame. The limiting shell is provided with rubber except for the contact surface.

5. The shock absorber for a power system of an engineering machinery according to claim 1, characterized in that: The limiting shell is provided with an arc chamfer.

Images