A high-precision positioning generator support

Abstract

The utility model discloses a high accuracy positioning's generator support for accurate assembly of gear chamber and generator. The support adopts integral casting L shape structure, and the corner is provided with arc transition to enhance structural strength. The support mounting side is equipped with two mounting holes with positioning sleeve, and realizes the installation without deviation with gear chamber through the " two pin one side " positioning structure of small clearance cooperation, and the generator fixed side is equipped with first mounting lug and second mounting lug, and the second mounting lug is assembled with stepped hollow shaft adjusting sleeve, and through the axial adjustment and gasket fine adjustment compensation installation error, makes the generator pulley system coplanarity control in the permission range. The invention solves the technical defects of low installation precision and poor adjustment capacity of the traditional support through the collaborative design of positioning sleeve and adjusting sleeve, effectively prolongs the service life of the belt, reduces the maintenance cost, and is especially suitable for the power transmission system assembly demand under the harsh working condition of non-road engine.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a high-precision positioning generator bracket. Background Technology

[0002] In the fan-end power transmission system of off-road engines, the drive arrangement of the pulley system typically adopts two typical schemes:

[0003] 1. Single belt multi-load drive mode: The crankshaft pulley drives both the water pump pulley and the generator pulley simultaneously via a single belt;

[0004] 2. Dual-belt segmented drive model: The crankshaft pulley and water pump pulley are driven by the first belt, while the water pump pulley and generator are independently driven by the second belt.

[0005] In both of the above-mentioned arrangements, the generator drive pulleys generally adopt a standard groove design of type A or type B pulleys, and their fixing brackets are mostly steel plate bending parts or castings manufactured using traditional processes (note: they do not integrate positioning sleeves and adjusting sleeves). However, in actual installed applications, this type of bracket has significant technical defects:

[0006] a. Insufficient installation accuracy: Due to the lack of a positioning reference structure in the bracket body, it is difficult to achieve high-precision "two pins and one surface" positioning during installation, which makes it easy for positional deviations to occur when the bracket is assembled with the gear chamber.

[0007] b. Lack of coplanarity adjustment capability: The existing support does not have an axial adjustment mechanism, and cannot compensate for the coplanarity deviation of the pulley system caused by manufacturing errors or assembly tolerances through mechanical means;

[0008] c. Risk of abnormal belt wear: Actual testing has verified that when the belt coplanarity exceeds the standard permissible range, uneven wear will occur. This problem is particularly prominent in off-road engine applications due to harsh working environments (such as dust intrusion, vibration, and impact), leading to a shortened belt life and significantly increasing user maintenance costs.

[0009] To address the aforementioned technical bottlenecks, this solution proposes a generator bracket solution that integrates high-precision positioning and dynamic adjustment functions. Through the designed positioning sleeve and adjustment sleeve structure, precise control of the coplanarity of the pulley system is achieved, fundamentally solving the technical problems of low installation accuracy and poor adjustment capability of traditional brackets. Utility Model Content

[0010] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0011] Therefore, in order to solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-precision positioning generator bracket, fixed on the gear chamber, for fixing the generator; the generator bracket includes a bracket body;

[0012] The bracket body has a mounting hole for connecting with the gear chamber, and a positioning sleeve is provided at the mounting hole. The positioning sleeve is configured to form a small clearance fit with the threaded hole with light hole in the gear chamber.

[0013] The bracket body is also provided with a first mounting ear and a second mounting ear. The first mounting ear is provided with a connection hole for connecting to the generator, and the second mounting ear is provided with an adjustment sleeve.

[0014] The positioning sleeve cooperates with the gear chamber bolts to achieve precise positioning of the bracket body. The adjusting sleeve passes through the generator fixing bolts, and the coplanarity of the generator is adjusted by adjusting the position of the adjusting sleeve and adding or removing shims at the first mounting ear.

[0015] In a preferred embodiment of the high-precision positioning generator bracket described in this utility model, the bracket body is a cast iron piece.

[0016] As a preferred embodiment of the high-precision positioning generator bracket of this utility model, the cross-section of the bracket body is L-shaped, and the inner angle of the L-shape of the bracket body is rounded.

[0017] In a preferred embodiment of the high-precision positioning generator bracket of this utility model, the number of mounting holes is two, and each mounting hole is provided with the positioning sleeve; the positioning sleeve and the mounting hole are interference fit.

[0018] In a preferred embodiment of the high-precision positioning generator bracket described in this utility model, the first mounting ear and the second mounting ear are both vertically arranged on one side of the bracket body, and the positioning sleeve is arranged on the other side of the bracket body.

[0019] As a preferred embodiment of the high-precision positioning generator bracket of this utility model, the adjusting sleeve is a stepped hollow shaft structure, and when the adjusting sleeve is installed, its large step end is arranged facing the first mounting ear.

[0020] In a preferred embodiment of the high-precision positioning generator bracket described in this utility model, the generator fixing bolt passes through the first mounting ear, the generator mounting hole and the adjusting sleeve in sequence and is then locked by an anti-loosening nut.

[0021] The beneficial effects of this utility model are:

[0022] 1. The positioning sleeve proposed in this utility model adopts a "two-pin, one-surface" positioning method with small clearance fit, which is locked with the gear chamber bolts. This can eliminate the offset error during bracket installation, ensure high-precision alignment between the bracket and the gear chamber, and lay the foundation for subsequent coplanarity control of the pulley system.

[0023] 2. In this utility model, the combination of the stepped hollow shaft structure of the adjusting sleeve and the shim fine-tuning system can improve the axial compensation accuracy, allow the generator installation position error to be corrected by mechanical adjustment, and keep the belt coplanarity stably controlled within the permissible range.

[0024] 3. By precisely controlling the coplanarity, this utility model reduces belt wear, extends belt life, reduces belt resource waste and waste generation, and conforms to the concept of green manufacturing. At the same time, it reduces the average annual maintenance cost of equipment, reduces downtime losses, and significantly improves equipment availability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them:

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0029] Figure 4 This is a cross-sectional structural diagram of the support body of this utility model.

[0030] Figure 5 This is a cross-sectional view of the first mounting ear and the second mounting ear of this utility model.

[0031] Figure 6 This is a schematic diagram of the installation structure of this utility model.

[0032] In the diagram: 100, bracket body; 101, mounting hole; 1011, gear chamber bolt; 102, first mounting ear; 1021, connecting hole; 103, second mounting ear; 1031, adjusting sleeve; 1032, generator fixing bolt; 105, positioning sleeve;

[0033] 200. Gear chamber;

[0034] 300. Generator. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0038] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0039] Reference Figures 1-6 This invention provides a high-precision positioning generator bracket, comprising an integrally cast L-shaped bracket body 100, wherein the L-shaped corners employ a rounded transition structure to enhance structural strength. The bracket body 100 is divided into a mounting side and a generator fixing side.

[0040] The installation-side structure is as follows:

[0041] Two mounting holes 101 are made on the mounting side of the bracket body 100, and a positioning sleeve 105 is press-fitted into each mounting hole 101. During installation, the positioning sleeve 105 is inserted into the pre-made threaded hole with a smooth hole in the gear chamber 200. The two are assembled with a small clearance fit to form a high-precision "two pins and one surface" positioning structure. The gear chamber bolt 1011 is screwed into the corresponding threaded hole in the gear chamber 200 through the positioning sleeve 105, so as to achieve the deviation-free installation of the bracket body 100.

[0042] The generator's fixed-side structure is as follows:

[0043] The generator fixing side of the bracket body 100 extends vertically from the first mounting ear 10 and the second mounting ear 103. The second mounting ear 103 is equipped with an adjusting sleeve 1031 with a stepped hollow shaft structure, the inner diameter of which is... The control (Note: D and the corresponding through hole on the generator have the same nominal diameter) is arranged with the large step end facing the first mounting ear 102 and is fitted with the first mounting ear 102 with a clearance of 0.1mm.

[0044] The specific installation method for the generator is as follows:

[0045] The generator 300 is positioned between the first mounting lug 102 and the second mounting lug 103;

[0046] The generator fixing bolt 1032 passes through the generator connection hole 1021 of the first mounting ear 102, the generator front support hole, and the inner hole of the adjusting sleeve 1031 in sequence.

[0047] By adjusting the axial movement of the sleeve 1031 and adding or removing shims between the first mounting ear 102 and the generator 300, the pulley of the generator skin 300 is made to achieve the target coplanarity.

[0048] Tighten the generator mounting bolt 1032 with the self-locking nut to complete the anti-loosening fixation.

[0049] In this embodiment: by improving the installation accuracy of the bracket through the positioning sleeve 105, and by coordinating the axial adjustment of the adjusting sleeve 1031 and the fine adjustment of the shims, the coplanarity of the belt can be effectively controlled within the permissible range, thus effectively solving the problem of abnormal belt wear.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-precision positioning generator bracket, fixed to the gear chamber (200) of an engine, used to fix the generator (300), characterized in that: The generator bracket includes a bracket body (100); The bracket body (100) is provided with a mounting hole (101) for connecting with the gear chamber (200). A positioning sleeve (105) is provided at the mounting hole (101). The positioning sleeve (105) is configured to form a small clearance fit with the screw hole with light hole in the gear chamber (200). The bracket body (100) is also provided with a first mounting ear (102) and a second mounting ear (103). The first mounting ear (102) is provided with a connection hole (1021) for connecting to the generator (300), and the second mounting ear (103) is provided with an adjustment sleeve (1031). The positioning sleeve (105) cooperates with the gear chamber bolt (1011) to achieve precise positioning of the bracket body (100). The adjusting sleeve (1031) passes through the generator fixing bolt (1032). The coplanarity of the generator (300) is adjusted by adjusting the position of the adjusting sleeve (1031) and adding or removing the shims at the first mounting ear (102).

2. The high-precision positioning generator bracket as described in claim 1, characterized in that: The support body (100) is a cast part.

3. The high-precision positioning generator bracket as described in claim 1, characterized in that: The cross-section of the support body (100) is L-shaped, and the inner corner of the L-shape of the support body (100) is rounded.

4. The high-precision positioning generator bracket as described in claim 1, characterized in that: There are two mounting holes (101), and each mounting hole (101) is provided with a positioning sleeve (105); the positioning sleeve (105) and the mounting hole (101) are interference fit.

5. A high-precision positioning generator bracket as described in claim 1, characterized in that: The first mounting ear (102) and the second mounting ear (103) are both vertically arranged on one side of the bracket body (100), and the positioning sleeve (105) is arranged on the other side of the bracket body (100).

6. The high-precision positioning generator bracket as described in claim 1, characterized in that: The adjusting sleeve (1031) is a stepped hollow shaft structure. When the adjusting sleeve (1031) is installed, its large step end is arranged facing the first mounting ear (102).

7. A high-precision positioning generator bracket as described in claim 1, characterized in that: The generator fixing bolt (1032) passes through the first mounting ear (102), the generator mounting hole and the adjusting sleeve (1031) in sequence and is then locked by the anti-loosening nut.

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