Cab rollover mechanism assembly

Abstract

The utility model relates to a cab turnover mechanism assembly, including turnover axle, frame connecting seat and cab connecting seat, the plane portion of frame connecting seat is connected with the frame, the plane portion of cab connecting seat is connected with the cab, at least a pair of frame connecting seat symmetrical fixed mounting is on the turnover axle, at least a pair of cab connecting seat rotary connection is on the turnover axle. The utility model is after the turnover of cab, and the mutual resistance of first limit seat and second limit seat realizes the auxiliary support of cab, makes the partial gravity of cab by the frame to bear, thereby slows down the long -time stress of oil cylinder, and simultaneously in the process of cab turnover, first limit seat can extrude buffer ring, makes it inside compression spring in cavity, buffers the turnover process of cab to reduce the instantaneous stress of oil cylinder, reduces the impact that oil cylinder received, prolongs the service life of oil cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of cab tilting mechanism, specifically a cab tilting mechanism assembly. Background Technology

[0002] In the cab of an engineering vehicle, various mechanical and electrical components are arranged in the chassis below the cab. The cab is lifted and tilted by a lifting and tilting mechanism to facilitate the inspection and maintenance of the components on the chassis. Commercial vehicle maintenance usually requires tilting the cab forward. The tilting and limiting of the cab are mostly achieved by tilting cylinders. For maintenance safety considerations, the tilting angle of the cab must be such that the center of gravity turns past the tilting center, and the cab enters a forward tilting and falling trend to facilitate the maintenance and replacement of the components under the cab, while ensuring the safety of the personnel operating under the cab.

[0003] Most current cab tilting assemblies are driven by hydraulic cylinders. When the cab tilts to the forward tilting position, the hydraulic cylinders are subjected to a large force due to the large weight of the cab. After the cab tilts, all the support force of the cab is provided by the hydraulic cylinders, which causes the hydraulic cylinders to be subjected to force for a long time, affecting their service life. Utility Model Content

[0004] The purpose of this utility model is to provide a cab tilting mechanism assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cab tilting mechanism assembly includes a tilting shaft, a frame connecting seat, and a cab connecting seat. The planar portion of the frame connecting seat is connected to the frame, and the planar portion of the cab connecting seat is connected to the cab. At least one pair of frame connecting seats are symmetrically fixedly mounted on the tilting shaft, and at least one pair of cab connecting seats are rotatably connected to the tilting shaft. A second limiting seat is fixedly mounted on the tilting shaft, and a first limiting seat is fixedly mounted on the frame connecting seat. Before tilting, one side of the first limiting seat abuts against one side of the second limiting seat, and after tilting, the other side of the first limiting seat abuts against the other side of the second limiting seat.

[0007] Preferably, a first plane is provided on both sides of the first limiting seat, and a second plane and a third plane are respectively provided on the second limiting seat. The first plane and the second plane abut against each other in a first state, and the other first plane and the third plane abut against each other in a second state.

[0008] The first state is that the planar portion of the frame connecting seat is parallel to the planar portion of the cab connecting seat;

[0009] The second state is that the planar portion of the frame connecting seat and the planar portion of the cab connecting seat are at an angle.

[0010] Preferably, the first limiting seat is provided with an arc surface, which is attached to the surface of the flip shaft and rotates with the first limiting seat, and the center of the circle opposite the arc surface falls on the axis of the flip shaft.

[0011] Preferably, the second limiting seat has a cavity inside, and a buffer ring is elastically and movably connected inside the cavity. The buffer ring is wrapped around the flip shaft, and the projection of the buffer ring on the vertical plane is an arc shape, with the center of the arc shape falling on the axis of the flip shaft.

[0012] Preferably, a spring is fixedly connected between the second limiting seat and the buffer ring, and the spring is located inside the cavity.

[0013] Preferably, one end of the buffer ring abuts against the first plane.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention provides auxiliary support to the cab after it is tilted, through the mutual contact of the first and second limiting seats. This allows the frame to bear part of the cab's weight, thereby reducing the long-term stress on the hydraulic cylinder. At the same time, during the cab tilting process, the first limiting seat can compress the buffer ring, causing it to compress the spring inside the cavity, thus buffering the tilting process of the cab and reducing the instantaneous force on the hydraulic cylinder, thereby reducing the impact on the hydraulic cylinder and extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a side view of the present invention.

[0018] Figure 3 This is a schematic diagram of the main structure of the first limiting seat of this utility model;

[0019] Figure 4 This is a schematic diagram of the main structure of the second limiting seat of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the buffer ring and the second limiting seat of this utility model.

[0021] In the diagram: 1. Tilting shaft; 2. Chassis connecting seat; 3. Cab connecting seat; 4. First limiting seat; 5. Buffer ring; 6. Second limiting seat; 7. Curved surface; 8. First plane; 9. Cavity; 10. Spring; 11. Second plane; 12. Third plane. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution:

[0024] A cab tilting mechanism assembly includes a tilting shaft 1, a frame connecting seat 2, and a cab connecting seat 3. The planar portion of the frame connecting seat 2 is connected to the frame, and the planar portion of the cab connecting seat 3 is connected to the cab. At least one pair of frame connecting seats 2 are symmetrically fixedly mounted on the tilting shaft 1, and at least one pair of cab connecting seats 3 are rotatably connected to the tilting shaft 1. A second limiting seat 6 is fixedly mounted on the tilting shaft 1, and a first limiting seat 4 is fixedly mounted on the frame connecting seat 2. Before tilting, one side of the first limiting seat 4 abuts against one side of the second limiting seat 6, and after tilting, the other side of the first limiting seat 4 abuts against the other side of the second limiting seat 6.

[0025] Please see Figure 1 and Figure 2 When the hydraulic cylinder drives the cab to tilt, the cab can drive the cab connecting seat 3 to rotate on the tilting shaft 1. At this time, the cab connecting seat 3 can drive the first limit seat 4 to rotate synchronously. After the cab tilting is completed, one side of the first limit seat 4 will abut against one side of the second limit seat 6. The cab is supported by the mutual contact between the first limit seat 4 and the second limit seat 6, thereby reducing the force on the hydraulic cylinder at this time.

[0026] The first limiting seat 4 has a first plane 8 on both sides, and the second limiting seat 6 has a second plane 11 and a third plane 12 respectively. The first plane 8 and the second plane 11 abut against each other in a first state, and the other first plane 8 and the third plane 12 abut against each other in a second state. In the first state, the plane part of the frame connecting seat 2 is parallel to the plane part of the cab connecting seat 3. In the second state, the plane part of the frame connecting seat 2 and the plane part of the cab connecting seat 3 are at an angle.

[0027] Please see Figure 3 and Figure 4Initially, the first plane 8 is in contact with the second plane 11. At this time, the cab has not been flipped and is in the first state. When the cab is flipped to the maximum extent, it is in the second state. At this time, the other first plane 8 is in contact with the third plane 12. The contact between the first plane 8 and the third plane 12 realizes the contact between the first limit seat 4 and the second limit seat 6, thereby realizing the support of the frame for the cab.

[0028] The first limiting seat 4 is provided with an arc surface 7, which is attached to the surface of the flip shaft 1 and rotates with the first limiting seat 4. The center of the circle opposite the arc surface 7 falls on the axis of the flip shaft 1.

[0029] Please see Figure 3 The arc surface 7 increases the contact area between the first limiting seat 4 and the tilting shaft 1. In the first state, the tilting shaft 1 supports the first limiting seat 4, and the first limiting seat 4 provides overall support for the cab connecting seat 3 and the cab.

[0030] The second limiting seat 6 has a cavity 9 inside, and a buffer ring 5 is elastically and movably connected inside the cavity 9. The buffer ring 5 is wrapped around the flip shaft 1, and the projection of the buffer ring 5 on the vertical plane is arc-shaped. The center of the arc falls on the axis of the flip shaft 1. A spring 10 is fixedly connected between the second limiting seat 6 and the buffer ring 5. The spring 10 is located inside the cavity 9, and one end of the buffer ring 5 abuts against the first plane 8.

[0031] Please see Figure 4 and Figure 5 During the transition from the first state to the second state, the buffer ring 5 is squeezed by the first limiting seat 4 and moves towards the interior of the cavity 9. During the movement, the buffer ring 5 compresses the spring 10. As the spring 10 gradually shortens, it can buffer the weight of the cab through its own elasticity, thereby reducing the instantaneous impact force on the cylinder.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cab tilting mechanism assembly, comprising a tilting shaft (1), a frame connecting seat (2), and a cab connecting seat (3), wherein the planar portion of the frame connecting seat (2) is connected to the frame, and the planar portion of the cab connecting seat (3) is connected to the cab, characterized in that, At least one pair of the frame connecting seats (2) are symmetrically fixedly installed on the tilting shaft (1), and at least one pair of the cab connecting seats (3) are rotatably connected to the tilting shaft (1). A second limiting seat (6) is fixedly installed on the tilting shaft (1), and a first limiting seat (4) is fixedly installed on the frame connecting seat (2). Before tilting, one side of the first limiting seat (4) abuts against one side of the second limiting seat (6), and after tilting, the other side of the first limiting seat (4) abuts against the other side of the second limiting seat (6).

2. The cab tilting mechanism assembly according to claim 1, characterized in that, The first limiting seat (4) has a first plane (8) on both sides, and the second limiting seat (6) has a second plane (11) and a third plane (12) respectively. The first plane (8) and the second plane (11) abut against each other in a first state, and the other first plane (8) and the third plane (12) abut against each other in a second state. The first state is that the planar portion of the frame connecting seat (2) is parallel to the planar portion of the cab connecting seat (3); The second state is that the planar portion of the frame connecting seat (2) and the planar portion of the cab connecting seat (3) are inclined at an angle.

3. A cab rollover mechanism assembly according to claim 2, wherein, The first limiting seat (4) is provided with an arc surface (7), which is attached to the surface of the flip shaft (1) and rotates with the first limiting seat (4). The center of the arc surface (7) falls on the axis of the flip shaft (1).

4. A cab rollover mechanism assembly according to claim 3, wherein, The second limiting seat (6) has a cavity (9) inside, and a buffer ring (5) is elastically connected inside the cavity (9). The buffer ring (5) is wrapped around the flip shaft (1), and the projection of the buffer ring (5) on the vertical plane is an arc shape. The center of the arc shape falls on the axis of the flip shaft (1).

5. A cab rollover mechanism assembly according to claim 4, wherein, A spring (10) is fixedly connected between the second limiting seat (6) and the buffer ring (5), and the spring (10) is located inside the cavity (9).

6. A cab rollover mechanism assembly according to claim 5, wherein, One end of the buffer ring (5) abuts against the first plane (8).

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