Passenger car chassis assembly tool

Abstract

The utility model discloses a passenger car chassis assembly tool which comprises a width positioning frame and a positioning car track which are oppositely arranged, a plurality of movable supporting mechanisms are arranged below the width positioning frame, and a plurality of height positioning mechanisms used for determining a second floor of a passenger car are arranged above the width positioning frame. A plurality of central keel positioning vehicles are mounted on the positioning vehicle track in a sliding manner; the device is suitable for installation of passenger car underframes of different types, the assembly process is more efficient through sliding installation of the positioning car track and the central keel positioning car, and time and labor cost are saved; the height positioning mechanism ensures accurate positioning of the two-layer floor of the passenger car, the application range is wide, adjustment can be conducted according to different car types, and the requirements of different users are met. And the production efficiency is improved, and the manual production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle frame welding, in particular to a passenger vehicle underframe assembly tooling. Background Art

[0002] The chassis structure of a full-load passenger car is the bottom support structure of the vehicle body, which usually includes the central keel, the second floor, the luggage compartment frame structure, the rear step frame, etc. Most of these parts are connected by welding. Since there are many welded parts in the vehicle chassis, the positioning requirements are also high, and the position of the parts to be welded and the welding seam need to be accurately determined. The current technology uses the method of welding and assembling parts one by one, which has low welding efficiency, is inconvenient to use, and the positioning accuracy between parts is not high.

[0003] The "welding tooling" disclosed in the publication number CN103170782B includes: a base; a support frame, the support frame is arranged on the base, and a first positioning seat for positioning the first part to be welded is arranged on the support frame; a positioning bracket, the positioning bracket is arranged on the base, and a second positioning seat is arranged on the positioning bracket, and a positioning block for positioning the second part to be welded is rotatably arranged on the second positioning bracket. The present invention fixes the part to be welded by the support frame, and adjusts the second part to be welded into place at one time by the positioning bracket, so as to achieve fast and accurate positioning, shorten the tooling adjustment time, and improve work efficiency; however, there are many types of existing vehicle chassis, and the positioning of some medium and large passenger cars is more complicated, and the positioning required includes not only the base positioning, but also the luggage compartment spacing positioning and the longitudinal positioning of the second-layer body bottom plate; the above-mentioned tooling platform is relatively simple and has a narrow scope of application. Summary of the invention

[0004] In order to overcome the defects in the prior art mentioned above, a bus underframe assembly tooling is provided, which has a more efficient assembly process, high assembly precision and quality, and a wide range of applications.

[0005] The technical solution of the utility model is as follows: a passenger car underframe assembly tooling, including a width positioning frame and a positioning vehicle track arranged relatively, a plurality of movable support mechanisms are provided below the width positioning frame, a plurality of height positioning mechanisms for determining the second floor of the passenger car are provided above the width positioning frame, and a plurality of central keel positioning vehicles are slidably installed on the positioning vehicle track.

[0006] Preferably, the mobile support mechanism includes a screw positioning assembly and a load-bearing track assembly; the load-bearing track assembly is used to support the width positioning frame; and the screw positioning assembly is used to drive the width positioning frame to move back and forth in the direction of the positioning vehicle track.

[0007] Preferably, the lead screw positioning assembly comprises a first servo motor and a first lead screw, and the first servo motor drives the first lead screw to move.

[0008] Preferably, the load-bearing rail assembly includes a fixed guide rail and a movable wheel, wherein the movable wheel is mounted at the bottom of the width positioning frame, and the movable wheel is slidably connected to the fixed guide rail.

[0009] Preferably, the height positioning mechanism includes a movable base, a support column and a lifting and positioning assembly; the lifting and positioning assembly is installed on the support column, the support column is assembled on the movable base, and the movable base moves along the length direction of the width positioning frame.

[0010] Preferably, the lifting and positioning assembly includes a second servo motor, a second lead screw, a support block and a lifting nut support; the second servo motor is connected to the second lead screw to drive the second lead screw to move up and down; one end of the lifting nut support is installed on the second lead screw, and the other end of the lifting nut support and the support block are assembled on the support column.

[0011] Preferably, vertical guide rails are provided on both sides of the support column, the support block is installed below the lifting nut support, and the support block and the lifting nut support move up and down along the vertical guide rails.

[0012] Preferably, the mobile base includes a base support frame, a third servo motor, a gear, a slider and a spacing positioning block; the spacing positioning block is installed on the side of the base support frame, and the gear and the slider are assembled under the base support frame; the third servo motor passes through the base support frame and is connected to the gear.

[0013] Preferably, the width positioning frame is provided with a slide rail and a rack; the slider is connected to the slide rail to drive the movable base to move; the gear is meshed with the rack.

[0014] Preferably, the central keel positioning vehicle comprises a positioning vehicle base, a width control mechanism and a height control mechanism; the width control mechanism and the height control mechanism are installed on the positioning vehicle base, and the height control mechanism is assembled on both sides of the width control mechanism.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The above-mentioned bus chassis assembly tooling includes relatively arranged width positioning frames and positioning vehicle tracks, which are suitable for installation of different types of bus chassis. The sliding installation of the positioning vehicle tracks and the central keel positioning vehicle makes the assembly process more efficient. The positioning vehicle can be quickly moved according to the different sizes of the central keel, saving time and labor costs. The height positioning mechanism ensures the precise positioning of the second floor of the bus, has a wide range of applications, and can be adjusted according to different models to meet the needs of different users. It improves production efficiency and reduces labor production costs.

[0017] Furthermore, the mobile support mechanism can effectively support and position the welding position of the bus underframe, ensuring its stability and accuracy during the assembly process; through the movement of the screw positioning assembly, the operator can make fine positioning adjustments to the bus underframe, thereby achieving high-quality underframe assembly.

[0018] Furthermore, through the coordinated action of the first servo motor and the first lead screw, the operator can make precise positioning adjustments to the width positioning frame to ensure that the chassis assembly reaches the desired position and alignment requirements during the assembly process, thereby improving assembly efficiency.

[0019] Furthermore, it is used to be fixed in the tooling structure to provide a stable sliding track for the moving wheels, ensuring the stable support and positioning of the coach chassis. Installed at the bottom of the width positioning frame, through the sliding connection with the fixed guide rail, the operator can easily adjust the position of the width positioning frame to ensure the stability and accuracy of the chassis assembly during the assembly process.

[0020] Furthermore, the mobile base is used to support the entire height positioning mechanism and move in the length direction of the width positioning frame to achieve position adjustment of the height positioning mechanism to meet the requirements of different assembly needs; the support column is assembled on the mobile base to provide support and fixation for the lifting and positioning assembly; the lifting and positioning assembly realizes flexible positioning of the second floor of the bus through lifting and lowering movements.

[0021] Furthermore, by driving the second screw through the second servo motor, precise control of the lifting height can be achieved to meet the height positioning requirements of the second floor of the bus; the lifting nut support is assembled on the screw to drive the support block to move longitudinally to accurately control the height of the second floor of the bus.

[0022] Furthermore, by moving the support block and the lifting nut support up and down along the vertical guide rail, the lifting and positioning assembly can be smoothly moved to ensure the accuracy of height positioning, reducing shaking and unstable factors during the movement. The guide rail reduces the friction between the support block and the lifting nut support during the movement, extending the service life of the parts.

[0023] Furthermore, through the design of the third servo motor, gears and sliders, precise control of the mobile base can be achieved, driving the support columns and lifting and positioning components assembled on the mobile base to move; the spacing positioning blocks are installed on the side of the base support frame, which can accurately locate the spacing of the bus luggage compartment.

[0024] Furthermore, through the connection between the slider and the slide rail, the smooth movement of the mobile base can be achieved, ensuring that the height positioning mechanism slides smoothly along the width positioning frame. The gear and rack are engaged, providing precise positioning of the mobile base, ensuring the accuracy of the moving position of the height positioning mechanism.

[0025] Furthermore, the combined use of the width control mechanism and the height control mechanism can achieve comprehensive control over the width and height of the central keel positioning vehicle, ensuring positioning accuracy and stability.

[0026] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the installation of a passenger car underframe assembly tooling of the utility model;

[0029] Figure 2 It is a schematic diagram of the installation of a mobile support mechanism of a passenger car underframe assembly tooling of the utility model;

[0030] Figure 3 A passenger car underframe assembly tooling of the utility model Figure 2 A magnified detail of the center point A;

[0031] Figure 4 A passenger car underframe assembly tooling of the utility model Figure 2 A magnified view of the detail at B in the middle;

[0032] Figure 5 It is a structural schematic diagram of the mobile base of the utility model;

[0033] Figure 6 It is a structural schematic diagram of the lifting and positioning assembly of the utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the support column of the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the protective shell of the utility model;

[0036] Fig. 9 It is a structural schematic diagram of the keel positioning vehicle of the utility model;

[0037] The following are the descriptions of the reference numerals:

[0038] Width positioning frame 1, positioning vehicle track 2, mobile support mechanism 3, height positioning mechanism 4, central keel positioning vehicle 5, slide rail 1-1, rack 1-2, screw positioning assembly 3-1, load-bearing track assembly 3-2, first servo motor 3-1-1, first screw 3-1-2, fixed guide rail 3-2-1, mobile wheel 3-2-2, mobile base 4-1, support column 4-2, protective shell 4-2-2, lifting positioning assembly 4-3, second servo motor 4-3-1, second screw 4-3-2, support block 4-3-3, lifting nut support 4-3-4, vertical guide rail 4-2-1, base support frame 4-1-1, third servo motor 4-1-2, gear 4-1-3, slider 4-1-4, spacing positioning block 4-1-5, positioning vehicle base 5-1, width control mechanism 5-2, height control mechanism 5-3. DETAILED DESCRIPTION

[0039] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0040] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0041] like Figure 1 As shown, a passenger car underframe assembly tooling includes a width positioning frame 1 and a positioning vehicle track 2 that are arranged relatively, the width positioning frame 1 and the positioning vehicle track 2 are parallel to each other, and the lengths of the width positioning frame 1 and the positioning vehicle track 2 match the lengths of medium and large customers on the market. The lengths of the width positioning frame 1 and the positioning vehicle track 2 can be increased according to the length of the passenger car, thereby improving the application range of the entire device.

[0042] according to Figure 2 and Figure 3As shown, a plurality of mobile support mechanisms 3 are arranged under the width positioning frame 1. Through the use of these mechanisms, the stability and load-bearing capacity of the entire frame can be improved. The mobile support mechanism 3 includes a screw positioning assembly 3-1 and a load-bearing track assembly 3-2. The screw positioning assembly 3-1 includes a first servo motor 3-1-1 and a first screw 3-1-2. The first servo motor 3-1-1 drives the first screw 3-1-2 to move. Through the screw positioning assembly 3-1, the distance between the width positioning frame 1 and the positioning vehicle track 2 can be accurately adjusted to achieve accurate positioning and control of the width positioning frame 1.

[0043] Among them, the load-bearing rail assembly 3-2 provides a stable support for the width positioning frame 1, which helps to reduce shaking and instability during movement. The load-bearing rail assembly 3-2 includes a fixed guide rail 3-2-1 and a movable wheel 3-2-2. The movable wheel 3-2-2 is installed at the bottom of the width positioning frame 1; when the first servo motor 3-1-1 drives the first screw 3-1-2 to move, the movable wheel 3-2-2 drives the width positioning frame 1 to slide on the fixed guide rail 3-2-1. Multiple load-bearing rail assemblies 3-2 are evenly installed under the width positioning frame 1. The load-bearing rail assembly 3-2 effectively shares the weight of the width positioning frame 1. The screw positioning assembly 3-1 is usually installed under the two ends of the width positioning frame 1 to ensure the stability and accuracy of the width positioning frame 1 during movement.

[0044] like Figure 1 As shown, above the width positioning frame 1, there are multiple height positioning mechanisms 4, which are used to determine the position of the second floor of the bus. Figure 2 , Figure 4 , Figure 5 As shown, the height positioning mechanism 4 includes a mobile base 4-1, a support column 4-2 and a lifting and positioning assembly 4-3; the support column 4-2 and the lifting and positioning assembly 4-3 are installed on the mobile base 4-1, and the mobile base 4-1 serves as a basis for support and movement, which helps to ensure the stability and reliability of the height positioning mechanism 4 during operation.

[0045] The movable base 4-1 includes a base support frame 4-1-1, a third servo motor 4-1-2, a gear 4-1-3, a slider 4-1-4 and a spacing positioning block 4-1-5; the gear 4-1-3 and the slider 4-1-4 are assembled under the base support frame 4-1-1; the third servo motor 4-1-2 passes through the base support frame 4-1-1 and is connected to the gear 4-1-3, the gear 4-1-3 is meshed with the rack 1-2 provided on the width positioning frame 1, and the third servo motor 4-1- The driving gear 4-1-3 rotates to make the gear 4-1-3 move back and forth along the rack 1-2. Two slide rails 1-1 connected with the slider 4-1-4 are also provided on the width positioning frame 1. The slider 4-1-4 is driven to slide on the slide rails 1-1 by the gear 4-1-3 cooperating with the rack 1-2. The spacing positioning block 4-1-5 is installed on the side of the base support frame 4-1-1. The spacing positioning of the luggage compartment of the bus can be determined by the spacing positioning blocks 4-1-5 on the multiple movable bases 4-1.

[0046] The third servo motor 4-1-2 is provided with a housing for protecting the motor to prevent accidents from happening to the third servo motor 4-1-2 during operation and to protect it from being damaged by collision with other devices.

[0047] like Figure 6 , 7 As shown, in order to accurately control the positioning of the second floor of the bus, a lifting and positioning component 4-3 is designed; the lifting and positioning component 4-3 includes a second servo motor 4-3-1, a second lead screw 4-3-2, a support block 4-3-3 and a lifting nut support 4-3-4; wherein, the position of the second floor of the bus is determined by the position of the support block 4-3-3, the support block 4-3-3 is assembled on the vertical guide rail 4-2-1 provided on the side of the support column 4-2, and the upper part of the support block 4-3-3 is connected with a lifting nut support 4-3-4 for driving the support block 4-3-3 to move up and down, and the other end of the lifting nut support 4-3-4 is installed on the second lead screw 4-3-2, and the second servo motor 4-3-1 drives the second lead screw 4-3-2 to move up and down, thereby driving the support block 4-3-3 to move, and accurately positioning the position of the second floor of the bus.

[0048] Combination Figure 8 The support column 4-2 is equipped with a protective shell 4-2-2 for protecting the lifting and positioning component 4-3 to prevent the lifting and positioning component 4-3 from being accidentally interfered with by other devices and stuck during the lifting process.

[0049] like Figure 1 As shown, a plurality of central keel positioning vehicles 5 are slidably mounted on the positioning vehicle track 2 to determine the position of the central keel of the bus; Fig. 9As shown, the central keel positioning vehicle 5 includes a positioning vehicle base 5-1, a width control mechanism 5-2 and a height control mechanism 5-3; the width control mechanism 5-2 and the height control mechanism 5-3 are installed on the positioning vehicle base 5-1, and the height control mechanism 5-3 is assembled on both sides of the width control mechanism 5-2. The width control mechanism 5-2 and the height control mechanism 5-3 are installed on the positioning vehicle base 5-1, which realizes the compact integrated design of the whole vehicle positioning system and is easy to install and maintain.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A passenger car underframe assembly tooling, characterized in that: The invention comprises a width positioning frame (1) and a positioning vehicle track (2) arranged relatively to each other, a plurality of movable support mechanisms (3) being arranged below the width positioning frame (1), a plurality of positioning mechanisms (4) for determining the height of the second floor of a passenger vehicle being arranged above the width positioning frame (1), and a plurality of central keel positioning vehicles (5) being slidably mounted on the positioning vehicle track (2).

2. The bus underframe assembly tooling according to claim 1, characterized in that: The movable support mechanism (3) comprises a screw positioning assembly (3-1) and a load-bearing track assembly (3-2); the load-bearing track assembly (3-2) is used to support the width positioning frame (1); and the screw positioning assembly (3-1) is used to drive the width positioning frame (1) to move back and forth in the direction of the positioning vehicle track (2).

3. The bus underframe assembly tooling according to claim 2 is characterized in that: The lead screw positioning assembly (3-1) comprises a first servo motor (3-1-1) and a first lead screw (3-1-2), and the first servo motor (3-1-1) drives the first lead screw (3-1-2) to move.

4. The bus underframe assembly tooling according to claim 2 is characterized in that: The load-bearing rail assembly (3-2) comprises a fixed guide rail (3-2-1) and a movable wheel (3-2-2); the movable wheel (3-2-2) is mounted on the bottom of the width positioning frame (1); and the movable wheel (3-2-2) is slidably connected to the fixed guide rail (3-2-1).

5. The bus underframe assembly tooling according to claim 1 is characterized in that: The height positioning mechanism (4) comprises a movable base (4-1), a support column (4-2) and a lifting and positioning assembly (4-3); the lifting and positioning assembly (4-3) is mounted on the support column (4-2), the support column (4-2) is assembled on the movable base (4-1), and the movable base (4-1) moves along the length direction of the width positioning frame (1).

6. The bus underframe assembly tooling according to claim 5 is characterized in that: The lifting and positioning assembly (4-3) comprises a second servo motor (4-3-1), a second lead screw (4-3-2), a support block (4-3-3) and a lifting nut support (4-3-4); the second servo motor (4-3-1) is connected to the second lead screw (4-3-2) to drive the second lead screw (4-3-2) to move up and down; one end of the lifting nut support (4-3-4) is mounted on the second lead screw (4-3-2), and the other end of the lifting nut support (4-3-4) and the support block (4-3-3) are assembled on the support column (4-2).

7. A passenger car underframe assembly tooling according to claim 5 or 6, characterized in that: Vertical guide rails (4-2-1) are provided on both sides of the support column (4-2); the support block (4-3-3) is installed below the lifting nut support (4-3-4); the support block (4-3-3) and the lifting nut support (4-3-4) move up and down along the vertical guide rails (4-2-1).

8. The bus underframe assembly tooling according to claim 5 is characterized by: The movable base (4-1) comprises a base support frame (4-1-1), a third servo motor (4-1-2), a gear (4-1-3), a slider (4-1-4) and a spacing positioning block (4-1-5); the spacing positioning block (4-1-5) is installed on the side of the base support frame (4-1-1), and the gear (4-1-3) and the slider (4-1-4) are assembled below the base support frame (4-1-1); the third servo motor (4-1-2) passes through the base support frame (4-1-1) and is connected to the gear (4-1-3).

9. The bus underframe assembly tooling according to claim 8, characterized in that: The width positioning frame (1) is provided with a slide rail (1-1) and a rack (1-2); the slider (4-1-4) is connected to the slide rail (1-1) to drive the movable base (4-1) to move; and the gear (4-1-3) is meshed with the rack (1-2).

10. The bus underframe assembly tooling according to claim 1, characterized in that: The central keel positioning vehicle (5) comprises a positioning vehicle base (5-1), a width control mechanism (5-2) and a height control mechanism (5-3); the width control mechanism (5-2) and the height control mechanism (5-3) are mounted on the positioning vehicle base (5-1), and the height control mechanism (5-3) is mounted on both sides of the width control mechanism (5-2).

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