Connecting device for cab and car frame

[0024] The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0025] Such as figure 1 Shown, see also figure 2 , The embodiment of the present invention provides a device for connecting a cab and a frame, which includes a first mounting frame 21, a spring damper 3, a second mounting frame 5, and a mounting tube 4, and the first mounting frame 21 is fixed on On the floor sheet metal 1 of the cab, the spring damper 3 is vertically arranged, the spring damper 3 is located below the floor sheet metal 1, and the top of the spring damper 3 is fixedly connected to the first mounting frame 21 , The second mounting frame 5 is fixedly connected to the frame 6, the mounting tube 4 is vertically fixed on the second mounting frame 5, the lower part of the spring damper 3 extends into the mounting tube 4, and the spring damper 3 The lower part is in clearance fit with the mounting cylinder 4, and the spring damper 3 and the mounting cylinder 4 can move up and down relatively. Preferably, the lower part of the spring damper 3 and the mounting cylinder 4 are movably connected.

[0026] Among them, the spring damper 3 can be an air spring damper 3, etc. There is a gap between the spring damper 3 and the mounting cylinder 4, but the gap is small, so that the spring damper 3 and the mounting cylinder 4 It can move up and down relatively, but there is almost no space for relative movement in the Y direction (horizontal left and right directions). Therefore, the vertical spring damper 3 is in clearance fit with the mounting cylinder 4, and the spring damper 3 and the mounting cylinder 4 The top of the spring shock absorber 3 is fixedly connected to the floor sheet metal 1 of the cab through the first mounting frame 21, and the mounting cylinder 4 is fixedly connected to the frame 6 through the second mounting frame 5, thereby Realize the restriction of the relative movement of the cab relative to the frame 6Y (horizontal left and right directions), that is, the stability of the support in this direction is ensured. At the same time, the present invention also allows the relative up and down movement between the spring damper 3 and the mounting cylinder 4 Therefore, the upper and lower relative vibration reduction movement of the cab relative to the frame 6 is realized; and the present invention has a simple structure, a small space occupation, and does not hinder the arrangement of other components, so that the overall weight and cost of the automobile can be effectively controlled.

[0027] Preferably, the second mounting frame 5 includes two clamp parts 51 and a mounting seat 52, the mounting seat 52 is fixedly connected to the frame 6, and the two clamp parts 51 are fixed in parallel from top to bottom in order. One side of the seat 52, and the axes of the two clamp parts 51 are located on the same vertical line, the two clamp parts 51 are connected to each other, and the mounting cylinder 4 is arranged in the two clamp parts 51. Wherein, the two clamp parts 51 can be a whole, the mounting cylinder 4 is arranged in the two clamp parts 51, the interface of the clamp part 51 is fastened by bolts, and the clamp part 51 is connected to the mounting cylinder 4 by bolts. The clamping tightness can be flexibly controlled.

[0028] Preferably, the mounting seat 52 is vertically arranged, and the mounting seat 52 and the frame 6 are fixedly connected by a first fastening bolt 53 arranged horizontally. The mounting base 52 is generally a vertical mounting plate, one side and the frame 6 are fixedly connected by a first fastening bolt 53 arranged horizontally, and the other side is respectively installed with two clamp parts 51 up and down.

[0029] Preferably, the connecting device further includes a horizontally arranged fixing plate 23, the fixing plate 23 is arranged between the first mounting frame 21 and the spring damper 3, the first mounting frame 21 and the fixing plate 23, the spring damping The top of the device 3 is connected sequentially.

[0030] Preferably, the first mounting frame 21 includes an L-shaped bracket, the first end of the L-shaped bracket is connected to the side of the floor sheet metal 1, and the second end of the L-shaped bracket is bent to extend to the floor sheet metal The bottom of 1 is parallel to the floor sheet metal 1, and the second end of the L-shaped bracket is connected to the fixed plate 23 and the top of the spring damper 3 in sequence.

[0031] Preferably, there are two L-shaped brackets, and the two L-shaped brackets are connected by a connecting plate 22. The connecting plate 22 serves to strengthen the strength.

[0032] Preferably, the connecting device further includes a second fastening bolt 24, the head of the second fastening bolt 24 is located between the second end of the L-shaped bracket and the floor sheet metal 1, and the rod of the second fastening bolt 24 The part passes through the second end of the L-shaped bracket and the fixing plate 23 sequentially, and is connected by a nut.

[0033] Preferably, the connecting device further includes a buffer sleeve, and the buffer sleeve is arranged between the mounting cylinder 4 and the second mounting frame 5. The arrangement of the buffer sleeve can avoid damage to the mounting cylinder 4 and the second mounting frame 5.

[0034] The structure, features, and effects of the present invention are described in detail above based on the embodiments shown in the drawings. The above descriptions are only preferred embodiments of the present invention, but the present invention does not limit the scope of implementation as shown in the drawings. Any changes made to the concept of the present invention, or equivalent embodiments modified into equivalent changes, which still do not exceed the spirit covered by the description and the drawings, should fall within the protection scope of the present invention.