General tool for engine subassembly of skid steer loader and backhoe loader
By designing a universal tooling fixture for engine assembly suitable for skid steer loaders and backhoe loaders, the problems of complex tooling management and large inventory in traditional processes have been solved, achieving universal compatibility and precise assembly of engine models and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUGONG CHANGZHOU MACHINERY
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-21
AI Technical Summary
In traditional engine assembly processes, each engine model requires customized tooling, which leads to problems such as complex tooling management, large inventory, and high production scheduling costs.
Design a universal tooling for the engine assembly of skid steer loaders and backhoe loaders. By coordinating the lateral and longitudinal adjustment support assemblies, it can adapt to the assembly of various engine models, reducing the number of special tooling and inventory space.
It enables the use of different engine models in one unit, saving space, improving management convenience and assembly accuracy, and reducing production costs.
Smart Images

Figure CN224144531U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a universal tooling for the engine assembly of skid steer loaders and backhoe loaders, belonging to the field of engineering machinery technology. Background Technology
[0002] In the power systems of skid steer loaders and backhoe loaders, the engine, as the core power source of the hydraulic drive unit, directly determines the working efficiency of the hydraulic system and the overall operational efficiency of the equipment. This power unit primarily undertakes three major functional responsibilities: providing a continuous and stable kinetic energy supply to the hydraulic circuit; precisely controlling the power curve characteristics of the hydraulic output; and achieving dynamic balance and thermal energy management during the energy conversion process. Current assembly processes require the engine to be pre-assembled and integrated with other components such as gear pumps before the entire machine can be assembled. Traditional assembly processes adopt a "one machine, one tooling" model, meaning that each engine model requires customized development of exclusive tooling. With the accelerated iteration of models due to product line expansion, this single matching mechanism has led to significant systemic problems: the complexity of the tooling management system has increased exponentially; the inventory of dedicated tooling occupies a large amount of warehousing resources; and the cost of production site scheduling and coordination remains high. Summary of the Invention
[0003] Purpose of the invention: To address the shortcomings of existing technologies, this utility model provides a universal tooling for engine assembly of skid steer loaders and backhoe loaders. Through the coordinated operation of lead screws and guide rails, it can effectively adapt to various models and specifications of engines for component assembly, thereby reducing the number of dedicated tooling for engine component assembly and compressing the associated storage area.
[0004] Technical solution: A universal tooling for the engine assembly of skid steer loaders and backhoe loaders, including a base and lateral adjustment support assemblies fixedly installed at both ends of the upper side of the base, wherein a longitudinal adjustment assembly connected to the lateral adjustment support assembly is provided between any lateral adjustment support assembly and the base;
[0005] Any of the lateral adjustment support assemblies includes at least one pair of independent lateral adjustment support components arranged symmetrically and a first slide rail fixedly connected to the base at the lower end of the lateral adjustment support components. The lateral adjustment components and the first slide rail are slidably connected by a first slider.
[0006] The longitudinal adjustment assembly includes a second slide rail that is perpendicular to the first slide rail, a mounting plate installed below the transverse adjustment support assembly, a second slider that is installed on the lower side of the mounting plate and slidably connected to the second slide rail, and a longitudinal adjustment component that is disposed on the base and connected to the mounting plate.
[0007] The support ends of the lateral adjustment support components at both ends are set on the same horizontal plane.
[0008] This invention utilizes the coordination of a lateral adjustment support assembly and a longitudinal adjustment assembly. Before engine assembly, by adjusting the distance between the support ends of the lateral adjustment support assembly to approximately equalize with the distance between the engine oil pan, and then adjusting the longitudinal adjustment assembly to match the support ends with the support points of the engine oil pan, the engine can be placed on the fixture for component assembly. The adjustable fixture can adapt to the assembly of different engine models, achieving multi-purpose functionality, reducing the need for one machine per component, saving significant space, and further improving equipment management convenience. Furthermore, the lateral adjustment is independent, allowing for precise adjustment of the lateral position of individual support parts as needed.
[0009] Any of the lateral adjustment support components includes a support plate fixedly mounted on a first slider, a support leg mounted on the upper side of the support plate, and a first threaded mounting seat mounted on the lower side of the support plate via a connecting plate; a first lead screw with external threads is provided through the first threaded mounting seat, the two ends of the first lead screw are connected to the base or mounting plate via the first lead screw mounting seat, and the first lead screw is rotatably mounted on the first lead screw mounting seat.
[0010] To achieve lateral adjustment, the two ends of the lead screw are connected to the mounting base. Bearings are installed in the mounting base to allow the lead screw to rotate. The threaded mounting base cooperates with the lead screw, and when the lead screw is rotated, it drives the threaded mounting base to move laterally. The lead screw adjustment has the advantages of fast response and high precision. During adjustment, it can be accurately adjusted to the specified position, improving assembly stability.
[0011] The longitudinal adjustment assembly includes a second threaded mounting seat disposed on the lower side of the mounting plate and a second lead screw with external threads disposed through the second threaded mounting seat. The two ends of the second lead screw are connected to the base through the second lead screw mounting seat, and the second lead screw is rotatably mounted on the second lead screw mounting seat.
[0012] To achieve longitudinal adjustment, similar to lateral adjustment, both ends of the lead screw are connected to mounting bases with bearings. However, for longitudinal adjustment, only one lateral adjustment support assembly needs to be installed below it, while the other lateral adjustment support assembly is fixed on the base. This allows for better control of the longitudinal distance between the support points, making the adjustment more precise.
[0013] The lateral adjustment support assembly is configured as two, and any lateral adjustment support assembly has two first slide rails and two first sliders, with the two first sliders located at both ends of the lower side of the support plate.
[0014] The second slide rail is configured as two, and the second slider is configured as two sets. Each set of second sliders includes two units that are symmetrically arranged and slidably mounted on the second slide rail. The four units are distributed in a rectangular array on the underside of the mounting plate.
[0015] To simplify the structure and adjustment process, and to ensure the stability of the support, the sliders and slide rails are set in pairs and symmetrically distributed, making the engine more stable when installed on the tooling and providing a safe and stable environment for subsequent assembly.
[0016] The first and second lead screws both extend outward from the edge of the base, and the extended portion is configured as a connecting rod, which is connected to the drive device.
[0017] To facilitate the connection of the lead screw to the drive device, the part of the lead screw near the outer side is set as an outwardly extending connecting rod, or it can be set as a connecting key to connect the lead screw to the power source.
[0018] The driving device is configured as a rocker arm.
[0019] The driving device is configured as a drive motor.
[0020] The support leg includes a support rod and a connecting part. One end of the support rod is fixedly connected to the support plate, and the other end is fixedly connected to the connecting part. The connecting part is configured as a vertical bending structure, and two adjacent connecting parts are symmetrically arranged.
[0021] To facilitate observation of the engine placement, the connecting part is designed as a bent structure, with the upper end abutting against the engine oil pan. The symmetrically arranged bent structure also makes it easier to measure the distance between the two connecting parts, making the adjustment more precise.
[0022] Beneficial effects: This utility model, through the cooperation of the lateral adjustment support assembly and the longitudinal adjustment assembly, allows the engine to be placed on the fixture before engine assembly. This is achieved by adjusting the distance between the support ends of the lateral adjustment support assembly to be approximately equal to the distance between the engine oil pan and the support points of the longitudinal adjustment assembly. The adjustable fixture can accommodate the assembly of different engine models, enabling multi-purpose use, reducing the need for separate fixtures, saving significant space, and further improving equipment management convenience. Furthermore, the lateral adjustment is independent, allowing for precise adjustment of the lateral position of individual support parts as needed. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0024] Figure 1This is a schematic diagram of the overall installation structure of this utility model.
[0025] Figure 2 This is a schematic diagram of the present invention with the support leg structure omitted.
[0026] Figure 3 This is a structural diagram of the longitudinal adjustment component of this utility model. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example
[0030] like Figures 1 to 3 As shown, a universal tooling for the engine assembly of a skid steer loader and a backhoe loader includes a base 1 and lateral adjustment support assemblies fixedly installed at both ends of the upper side of the base 1. A longitudinal adjustment assembly connected to the lateral adjustment support assembly is provided between any lateral adjustment support assembly and the base 1.
[0031] Any of the lateral adjustment support assemblies includes at least one pair of independent lateral adjustment support components arranged symmetrically and a first slide rail 2 disposed at the lower end of the lateral adjustment support components and fixedly connected to the base 1. The lateral adjustment components and the first slide rail 2 are slidably connected by a first slider 3.
[0032] The longitudinal adjustment assembly includes a second slide rail 4 that is perpendicular to the first slide rail 2, a mounting plate 5 installed below the transverse adjustment support assembly, a second slider 6 installed on the lower side of the mounting plate 5 and slidably connected to the second slide rail 4, and a longitudinal adjustment component disposed on the base 1 and connected to the mounting plate 5.
[0033] The support ends of the lateral adjustment support components at both ends are set on the same horizontal plane.
[0034] This invention utilizes the coordination of a lateral adjustment support assembly and a longitudinal adjustment assembly. Before engine assembly, by adjusting the distance between the support ends of the lateral adjustment support assembly to approximately equalize with the distance between the engine oil pan, and then adjusting the longitudinal adjustment assembly to match the support ends with the support points of the engine oil pan, the engine can be placed on the fixture for component assembly. The adjustable fixture can adapt to the assembly of different engine models, achieving multi-purpose functionality, reducing the need for one machine per component, saving significant space, and further improving equipment management convenience. Furthermore, the lateral adjustment is independent, allowing for precise adjustment of the lateral position of individual support parts as needed.
[0035] Any of the lateral adjustment support components includes a support plate 7 fixedly mounted on the first slider 3, a support leg 8 mounted on the upper side of the support plate 7, and a first threaded mounting seat 10 mounted on the lower side of the support plate 7 via a connecting plate 9; a first lead screw 11 with external threads is provided through the first threaded mounting seat 10, and the two ends of the first lead screw 11 are connected to the base 1 or the mounting plate 5 via the first lead screw mounting seat 12, and the first lead screw 11 is rotatably mounted on the first lead screw mounting seat 12.
[0036] To achieve lateral adjustment, the two ends of the lead screw are connected to the mounting base. Bearings are installed in the mounting base to allow the lead screw to rotate. The threaded mounting base cooperates with the lead screw, and when the lead screw is rotated, it drives the threaded mounting base to move laterally. The lead screw adjustment has the advantages of fast response and high precision. During adjustment, it can be accurately adjusted to the specified position, improving assembly stability. The connecting plate is used to increase the distance between the threaded mounting base and the support plate.
[0037] The longitudinal adjustment assembly includes a second threaded mounting seat 13 disposed on the lower side of the mounting plate 5, and a second lead screw 14 with external threads disposed through the second threaded mounting seat 13. The two ends of the second lead screw 14 are connected to the base 1 through the second lead screw mounting seat 15, and the second lead screw 14 is rotatably mounted on the second lead screw mounting seat 15.
[0038] To achieve longitudinal adjustment, similar to lateral adjustment, both ends of the lead screw are connected to a mounting base with bearings. However, for longitudinal adjustment, only one lateral adjustment support assembly needs to be installed below it. The other lateral adjustment support assembly is fixed on the base 1, which can better control the longitudinal distance of the support points and make the adjustment more precise. Example
[0039] The lateral adjustment support assembly is configured as two, and any lateral adjustment support assembly has two first slide rails 2 and two first sliders 3, with the two first sliders 3 positioned at both ends of the lower side of the support plate 7.
[0040] The second slide rail 4 is configured as two, and the second slider 6 is configured as two sets. Each set of second slider 6 includes two units that are symmetrically arranged and slidably mounted on the second slide rail 4. The four units are distributed in a rectangular array on the underside of the mounting plate 5.
[0041] To simplify the structure and adjustment process, and to ensure the stability of the support, the sliders and slide rails are set in pairs and symmetrically distributed, making the engine more stable when installed on the tooling and providing a safe and stable environment for subsequent assembly.
[0042] The first lead screw 11 and the second lead screw 14 are both extended outward at one end near the edge of the base 1, and the extended part is configured as a connecting rod 16, which is connected to the drive device.
[0043] To facilitate the connection of the lead screw to the drive device, the part of the lead screw near the outer side is configured as an outwardly extending connecting rod 16, which can also be configured as a connecting key to connect the lead screw to the power source. Example
[0044] The driving device is configured as a rocker arm. Example
[0045] The driving device is configured as a drive motor. Example
[0046] The drive unit is configured as a power tool that matches the connecting rod.
[0047] The support leg 8 includes a support rod 81 and a connecting part 82. One end of the support rod 81 is fixedly connected to the support plate 7, and the other end is fixedly connected to the connecting part 82. The connecting part 82 is configured as a vertical bending structure, and two adjacent connecting parts 82 are symmetrically arranged.
[0048] To facilitate observation of the engine placement, the connecting part 82 is designed as a bent structure, with its upper end abutting against the engine oil pan. The symmetrically arranged bent structure also facilitates the measurement of the distance between the two connecting parts 82, making the adjustment more precise.
[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0050] 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 skid steer and track loader engine department installation tooling kit characterized by: It includes a base (1) and a lateral adjustment support assembly fixedly installed at both ends of the upper side of the base (1). A longitudinal adjustment assembly connected to the lateral adjustment support assembly is provided between any lateral adjustment support assembly and the base (1). Any of the lateral adjustment support assemblies includes at least one pair of independent lateral adjustment support components arranged symmetrically and a first slide rail (2) fixedly connected to the base (1) at the lower end of the lateral adjustment support components. The lateral adjustment components and the first slide rail (2) are slidably connected by a first slider (3). The longitudinal adjustment assembly includes a second slide rail (4) that is perpendicular to the first slide rail (2), a mounting plate (5) installed below the transverse adjustment support assembly, a second slider (6) that is installed on the lower side of the mounting plate (5) and slidably connected to the second slide rail (4), and a longitudinal adjustment component that is provided on the base (1) and connected to the mounting plate (5). The support ends of the lateral adjustment support components at both ends are set on the same horizontal plane.
2. The skid-steer and track loader engine department installation tooling of claim 1, wherein: Any of the lateral adjustment support components includes a support plate (7) fixedly mounted on the first slider (3), a support leg (8) mounted on the upper side of the support plate (7), and a first threaded mounting seat (10) mounted on the lower side of the support plate (7) via a connecting plate (9); a first lead screw (11) with external threads is provided through the first threaded mounting seat (10), and the two ends of the first lead screw (11) are connected to the base (1) or the mounting plate (5) via the first lead screw mounting seat (12), and the first lead screw (11) is rotatably mounted on the first lead screw mounting seat (12).
3. The skid steer and track loader engine department installation tooling of claim 2, wherein: The longitudinal adjustment assembly includes a second threaded mounting seat (13) disposed on the lower side of the mounting plate (5) and a second lead screw (14) with external threads disposed through the second threaded mounting seat (13). The two ends of the second lead screw (14) are connected to the base (1) through the second lead screw mounting seat (15). The second lead screw (14) is rotatably mounted on the second lead screw mounting seat (15).
4. The skid-steer and track loader engine department installation tooling of claim 1, wherein: The lateral adjustment support assembly is configured as two, and the first slide rail (2) and the first slider (3) of any lateral adjustment support assembly are configured as two, and the two first sliders (3) are located at both ends of the lower side of the support plate (7); The second slide rail (4) is set to two, and the second slider (6) is set to two groups. Each group of second sliders (6) includes two units that are symmetrically arranged and slidably mounted on the second slide rail (4). The four units are distributed in a rectangular array on the underside of the mounting plate (5).
5. The skid-steer and track loader engine department installation tooling of claim 3, wherein: The first lead screw (11) and the second lead screw (14) are both extended outward at one end near the edge of the base (1), and the extended part is configured as a connecting rod (16), which is connected to the drive device.
6. The skid-steer and track loader engine department installation tool of claim 5, wherein: The driving device is configured as a rocker arm.
7. The skid-steer and track loader engine department installation tool of claim 5, wherein: The driving device is configured as a drive motor.
8. The skid steer and track loader engine department installation tool of claim 2, wherein: The support leg (8) includes a support rod (81) and a connecting part (82). One end of the support rod (81) is fixedly connected to the support plate (7), and the other end is fixedly connected to the connecting part (82). The connecting part (82) is configured as a vertical bending structure, and two adjacent connecting parts (82) are symmetrically arranged.