Simple tensioning tool for side skin of passenger car

Abstract

The simple tensioning tool for the side skin of the passenger car is simple in structure, low in cost and convenient to use, the problem that the flatness of the skin is insufficient can be solved, and small-batch production can be achieved. The device comprises a skin, a jack and a mounting frame, the movable end of the jack is matched with the top of the mounting frame in a pressing mode, a clamping groove is formed in the bottom of the mounting frame, a plurality of fixing bolts are arranged on the side of the clamping groove, the side of the skin is arranged in the clamping groove, and the fixing bolts are arranged on the side of the skin. The fixing bolts penetrate through the clamping grooves to be fixedly matched with the skin. The vehicle skin tensioning device is applied to the technical field of vehicle skin tensioning.

Description

Technical Field

[0001] The utility model is applied to the technical field of vehicle skin tensioning, and particularly relates to a simple tensioning tool for the side skin of a passenger car. Background Art

[0002] With the development of economy, people have higher and higher requirements for the quality and comfort of buses. The competition within the bus industry is becoming more and more fierce. The comfort of buses has become a requirement of passengers. For large vehicles such as buses and buses, the body frame needs to be closed and decorated with skin. The skin is welded to the frame. The welding process needs to ensure the flatness of the surface skin to avoid the skin from wavy deformation and affect the aesthetics of the whole vehicle. Therefore, a semi-automatic tooling is needed to tension the skin. The main engine factories ranked high in the industry use large-scale skin tensioning equipment, which has high procurement costs, large occupied space, and high maintenance costs. It is only suitable for enterprises with a certain production scale. Other small main engine factories rely on manual tensioning, which has a complex tensioning process, low efficiency, and cannot guarantee the flatness of the skin, and the product consistency is poor. For example, the Chinese patent with the publication number CN211161233U discloses a vehicle skin tensioning device, in which the skin connection seat moves on the guide beam through the drive unit, thereby driving the entire skin to achieve the tensioning effect. However, its structure is relatively complex, the disassembly process is relatively troublesome, the cost is high, and it is difficult to accurately control the stroke of the drive unit. Therefore, it is necessary to provide a simple structure, low cost, and easy to use, which can not only solve the problem of insufficient skin flatness, but also realize small-scale production of simple tensioning tooling for bus side skins. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a simple structure, low cost, and easy use, which can not only solve the problem of insufficient skin flatness, but also realize a simple tensioning tooling for passenger car side skins produced in small batches.

[0004] The technical solution adopted by the utility model is: the utility model includes a skin, a jack and a mounting frame, the movable end of the jack is press-fitted with the top of the mounting frame, the bottom of the mounting frame is provided with a clamping groove, the side of the clamping groove is provided with a plurality of fixing bolts, the side of the skin is arranged in the clamping groove, and the fixing bolts pass through the clamping groove and are fixedly fitted with the skin.

[0005] It can be seen from the above scheme that the structure of the present application is simple and easy to use. The skin can be clamped by means of clamping grooves and bolts, and the skin can be tensioned using a jack, thereby improving the surface flatness of the skin and improving the manufacturing quality of the entire vehicle. It can meet the needs of skin tensioning for 6-12 meter buses. This tooling has low cost, small footprint, strong versatility, and can meet the needs of OEMs of various bus sizes. It is very suitable for small OEMs to achieve mass production, with simple maintenance, low maintenance cost, quick maintenance, simple parts processing, meeting self-made conditions, low cost, and high market promotion prospects.

[0006] A preferred solution is that a plurality of the fixing bolts are distributed along a straight line on the sides of the clamping groove.

[0007] A preferred solution is that positioning bolts are provided at both left and right ends of the side of the clamping groove, and the positioning bolts pass through the clamping groove and are positioned and matched with the skin.

[0008] A preferred solution is that a plurality of mounting seats distributed along a straight line are provided on the side of the clamping groove, the left and right ends of the mounting seats are positioned and matched with the mounting frame through a shift fork, and the fixing bolts pass through the mounting seats, the clamping groove and the skin in sequence for fixed cooperation.

[0009] A preferred solution is that a round platform is welded on the top of the mounting frame, the round platform is a sunken platform structure, and the movable end of the jack is press-fitted with the top of the round platform.

[0010] A preferred solution is that the mounting frame is a trapezoidal structure, the top of the mounting frame is the short side of the trapezoidal structure, and the bottom of the mounting frame is the long side of the trapezoidal structure.

[0011] A preferred solution is that reinforcement plates are welded to the top and side portions of the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 is a schematic diagram of the three-dimensional structure when the skin is stretched;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the utility model from another angle. DETAILED DESCRIPTION

[0015] like Figures 1 to 3As shown, in this embodiment, the utility model includes a skin 5, a jack 1 and a mounting frame 2, the movable end of the jack 1 is pressed against the top of the mounting frame 2, a clamping groove 3 is provided at the bottom of the mounting frame 2, a plurality of fixing bolts 4 are provided on the side of the clamping groove 3, the side of the skin 5 is provided in the clamping groove 3, and the fixing bolts 4 pass through the clamping groove 3 and are fixedly matched with the skin 5. The clamping groove 3 is used to insert the skin 5, and the fixing bolts 4 are used to fix the skin 5 to ensure that the skin 5 will not fall off and move when the skin 5 is stretched. The jack 1 provides the tension for stretching the skin 5, and the skeleton structure fixing the skin 5 is moved by the telescopic mechanism of the jack 1, so as to meet the tensioning amount of the skin 5 of 8‰-10‰, and ensure that the surface flatness of the skin 5 meets the requirements after stretching.

[0016] like Figures 1 to 3 As shown, in this embodiment, a plurality of fixing bolts 4 are distributed along a straight line on the side of the clamping groove 3. The plurality of fixing bolts 4 limit and fix the width of the skin 5 to ensure the surface flatness of the skin 5 after tensioning.

[0017] like Figures 1 to 3 As shown, in this embodiment, positioning bolts 6 are provided at both left and right ends of the side of the clamping groove 3, and the positioning bolts 6 pass through the clamping groove 3 and are positioned and matched with the skin 5. The positioning bolts 6 are used to locate the position of the skin 5. After the positioning is completed, the fixing bolts 4 pass through the clamping groove 3 and are fixedly matched with the skin 5.

[0018] like Figures 1 to 3 As shown, in this embodiment, a plurality of mounting seats 8 distributed along a straight line are arranged on the side of the clamping groove 3, and the left and right ends of the mounting seat 8 are positioned and matched with the mounting frame 2 through a shift fork 9, and the fixing bolt 4 passes through the mounting seat 8 and the clamping groove 3 in sequence and is fixedly matched with the skin 5. The mounting seat 8 is used to install the fixing bolt 4, and the mounting seat 8 is a detachable structure, which is disassembled and assembled according to the skin 5 of different specifications, so as to limit and fix the width of the skin 5.

[0019] like Figures 1 to 3 As shown, in this embodiment, a round platform 10 is welded on the top of the mounting frame 2. The round platform 10 is a sinking structure, and the movable end of the jack 1 is press-fitted with the round platform 10. The round platform 10 positions the movable end of the jack 1 through a groove structure to prevent the movable end of the jack 1 from slipping and deviating during the forward driving process of the jack 1. The round platform 10 limits the range of movement of the jack 1. When the skin 5 is tensioned, the jack 1 supports the round platform 10, thereby tensioning the skin 5.

[0020] like Figures 1 to 3 As shown, in this embodiment, the mounting frame 2 is a trapezoidal structure, the top of the mounting frame 2 is the short side of the trapezoidal structure, and the bottom of the mounting frame 2 is the long side of the trapezoidal structure. The adjacent sides of the trapezoidal structure are connected by welding, which is low in cost and convenient to use. Using the trapezoidal structure as a transmission part is conducive to improving the stability of the entire tooling.

[0021] like Figures 1 to 3 As shown, in this embodiment, the top and side of the mounting frame 2 are welded with reinforcing plates 11. The reinforcing plates 11 can improve the rigidity of the mounting frame 2 and prevent the mounting frame 2 from being deformed due to insufficient strength when the skin 5 is stretched.

Claims

1. A simple tensioning tool for a passenger car side skin, comprising a skin (5), characterized in that: The simple tensioning tool for the passenger car side skin also includes a jack (1) and a mounting frame (2), wherein the movable end of the jack (1) is press-fitted with the top of the mounting frame (2), the bottom of the mounting frame (2) is provided with a clamping groove (3), the side of the clamping groove (3) is provided with a plurality of fixing bolts (4), the side of the skin (5) is arranged in the clamping groove (3), and the fixing bolts (4) pass through the clamping groove (3) and are fixedly fitted with the skin (5).

2. The simple tensioning tool for the side skin of a passenger car according to claim 1, characterized in that: A plurality of fixing bolts (4) are distributed along a straight line on the sides of the clamping groove (3).

3. The simple tensioning tool for passenger car side skin according to claim 1, characterized in that: Positioning bolts (6) are provided at both left and right ends of the side of the clamping groove (3), and the positioning bolts (6) pass through the clamping groove (3) and are positioned and matched with the skin (5).

4. The simple tensioning tool for the side skin of a passenger car according to claim 1, characterized in that: A plurality of mounting seats (8) distributed along a straight line are arranged on the side of the clamping groove (3); the left and right ends of the mounting seat (8) are positioned and matched with the mounting frame (2) via a shift fork (9); and the fixing bolt (4) passes through the mounting seat (8), the clamping groove (3) and the skin (5) in sequence for fixed fit.

5. The simple tensioning tool for passenger car side skin according to claim 1, characterized in that: A round platform (10) is welded to the top of the mounting frame (2); the round platform (10) is a sunken platform structure; the movable end of the jack (1) is press-fitted with the round platform (10).

6. The simple tensioning tool for the side skin of a passenger car according to claim 1, characterized in that: The mounting frame (2) is a trapezoidal structure, the top of the mounting frame (2) is the short side of the trapezoidal structure, and the bottom of the mounting frame (2) is the long side of the trapezoidal structure.

7. The simple tensioning tool for passenger car side skin according to claim 1, characterized in that: The top and side portions of the mounting frame (2) are both welded with reinforcement plates (11).

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