CN210310604U - Multistage-adjusting turnover mechanism for motor vehicle cab - Google Patents

Abstract

The utility model discloses a turnover mechanism for multistage adjustment of a motor vehicle cab, which comprises a turnover shaft, a first connecting support, a second connecting support, a frame and a turnover control device, wherein the turnover control device is fixedly arranged at one side of the frame, the turnover control device comprises a rotating disc, a fixed block and a pin shaft, the rotating disc is fixedly arranged at one end of the turnover shaft, the pin shaft is arranged on the side wall of the rotating disc in a sliding manner, a mounting hole is arranged on the side wall of the rotating disc, and a spring is arranged between the pin shaft and the mounting hole; the fixed block is the cake form, the lateral wall butt of fixed block is on the rolling disc lateral wall, fixed block and rolling disc butt department are equipped with the pinhole with round pin axle adaptation. The utility model discloses an install the spacing control of the different rotation angle of motor vehicle driver's cabin behind the turnover control device additional to thereby can realize the multistage adjustment purpose of driver's cabin by continuous adjustment, be convenient for carry out the rotation angle adjustment to the maintenance inspection condition of difference.

Description

Multistage-adjusting turnover mechanism for motor vehicle cab

Technical Field

The utility model belongs to the technical field of motor vehicle equipment, in particular to motor vehicle cab's multistage adjustment's tilting mechanism.

Background

Engines and gearboxes of flat-head trucks, agricultural machinery, engineering machinery and other traveling machinery are all arranged on a chassis girder below a cab, and the cab needs to be turned over during maintenance or repair to expose the engines and gearboxes covered by the cab. In the prior art, the purpose of overturning the cab is realized by installing an overturning mechanism between the cab and a chassis girder. However, because the area of the bottom of the cab is large, the number of components is large, sometimes, the part needing maintenance and inspection is far away from the vehicle head, the whole cab does not need to be turned over, the maintenance and inspection can be completed only by turning over the whole cab at a certain angle, and the prior art only needs to be recorded in the aspect, so that the whole cab needs to be turned over, and time and labor are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem of the existence of above-mentioned prior art, provide motor vehicle driver's cabin multistage adjustment's tilting mechanism.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

the turnover mechanism comprises a turnover shaft, a first connecting support, a second connecting support and a frame, wherein two ends of the turnover shaft are fixedly connected with the frame through the second connecting support; the fixed block is the cake form, the lateral wall butt of fixed block is on the rolling disc lateral wall, fixed block and rolling disc butt department are equipped with the pinhole with the round pin axle adaptation, thereby the fixed block is pegged graft through the part of pinhole and round pin axle and fixes spacing motor vehicle cab fall back that prevents to turn up with the rolling disc.

Furthermore, the pin shafts are uniformly distributed on the circumferential side wall of the rotating disc, and the contact surfaces of the pin shafts and the fixed block are cambered surfaces when the cab of the motor vehicle is turned upwards and opened.

Further, the contact surface of the pin hole and the pin shaft is also set to be a cambered surface when the cab of the motor vehicle turns upwards and opens.

Furthermore, the pin hole is provided with a first roller on a contact surface with the pin shaft when the cab of the motor vehicle turns upwards and opens, and the first roller is arranged at the opening end of the pin hole.

Furthermore, the turnover control device further comprises a retraction device, the retraction device comprises a control unit and an operation unit, the control unit comprises a main rope and a movable disc, a cavity is arranged in the movable disc, an opening of the cavity is formed in one end face of the movable disc, a columnar blind hole is formed in the center of the rotary disc, the opening of the blind hole is formed in the outer end face of the rotary disc, a first through hole communicated with the bottom of the mounting hole is further formed in the side wall of the blind hole, the movable disc is rotatably connected to the outer end face of the rotary disc to enable the blind hole to be communicated with the cavity, a second through hole is formed in the curved side wall of the movable disc, one end of the main rope is connected with auxiliary ropes, the number of the auxiliary ropes is the same as that of the pin shafts, the auxiliary ropes penetrate through the first through hole to be fixedly connected with the pin shafts, and the other end of the; the operation unit is installed and is kept away from the one end of trip shaft on the frame, including handle and wire reel, the one end of handle is passed through the rotate bracket and is installed in the bottom of frame, the wire reel setting is fixed and revolutes the synchronous rotation of axis of rotation with the handle in the support outside, the other end of main rope is fixed on the curved surface lateral wall of wire reel.

Further, install the second gyro wheel in the cavity, second gyro wheel fixed mounting keeps away from the cavity open-ended inboard in the activity dish, main rope passes the second through-hole behind the second gyro wheel in the cavity.

Furthermore, the support comprises surrounding edges which are symmetrical on two sides, the surrounding edges on the two sides surround and clamp the framework pipe of the frame, and the surrounding edges are provided with adjusting bolts.

The utility model has the advantages that: the utility model discloses an install the spacing control of the different rotation angle of motor vehicle driver's cabin behind the turnover control device additional to thereby can realize the multistage adjustment purpose of driver's cabin by continuous adjustment, be convenient for carry out the rotation angle adjustment to the maintenance inspection condition of difference.

Drawings

Fig. 1 is a schematic perspective view of the turnover mechanism of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of the turnover control device of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is an enlarged view of a portion of FIG. 1 at C;

FIG. 6 is a schematic view of the connection structure of the movable disk and the rotating disk according to the present invention;

fig. 7 is a schematic perspective view of the bracket of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1, the turnover mechanism for multi-stage adjustment of a motor vehicle cab comprises a turnover shaft 10, a first connecting support 11 and a turnover control device; the two ends of the turning shaft 10 are connected with a frame 13 at the bottom through a second connecting support 12, the turning shaft 10 penetrates through and is rotatably arranged in a connecting hole of the second connecting support 12, in order to ensure the rotating fluency, the turning shaft 10 can be connected with the second connecting support 12 through a bearing, the first connecting support 11 is fixedly arranged at the two ends of the turning shaft 10, the first connecting support 11 and the turning shaft 10 are kept fixed, the first connecting support 11 is arranged at the inner side of the second connecting support 12, the top of the first connecting support 11 is fixedly connected with a framework at the bottom of a motor vehicle cab, so that the motor vehicle cab (not shown in the figure) and the frame 13 can rotate around the turning shaft 10, the motor vehicle cab can be turned, the turning shaft 10 can also rotate due to the fixed connection with the first connecting support 11 during turning, and the labor intensity of operators is reduced during actual turning, a torsion bar 14 is arranged between the two second connecting supports 12, one end of the torsion bar 14 is fixedly connected with one second connecting support 12, the other end of the torsion bar 14 penetrates through the other second connecting support 12 and is rotatably connected with the other second connecting support 12, a torsion arm 15 is fixedly connected with the rotating end of the torsion bar 14 and the second connecting support 12, and the torsion arm 15 is arranged at the bottom of a framework at the bottom of a cab of the motor vehicle and is in sliding contact with the framework; when the cab of the motor vehicle is opened, the torsion bar 14 is in a twisting stress state and stores elastic potential energy, when an operator needs to lift the cab of the motor vehicle, the cab of the motor vehicle is jacked upwards, the torsion bar 14 is in the twisting stress state and is reduced, and the elastic potential energy is converted into kinetic energy of the upward turnover of the cab of the motor vehicle, so that the operator is helped to save labor; in addition, in order to further reduce the labor intensity of the operator, a pneumatic rod (not shown) or other devices may be disposed between the frame at the bottom of the cab of the vehicle and the frame 13 to help the operator save labor, and the device may work in cooperation with the torsion bar 14 to reduce the load of the torsion bar 14 during the operation and improve the durability of the torsion bar 14.

As shown in fig. 2 and 3, the turnover control device is fixedly installed at one side of the frame 13, and includes a rotating disc 21, a fixed block 22 and a pin 23, the rotating disc 21 is fixedly installed at one end of the turnover shaft 10 and is located at the outer side of the second connecting support 12, the pin 23 is slidably installed on the sidewall of the rotating disc 21, the pin 23 is uniformly distributed on the circumferential sidewall of the rotating disc 21, an installation hole 211 adapted to the pin 23 is formed in the circumferential sidewall of the rotating disc 21, a spring 212 is connected to the socket end of the pin 23 and the installation hole 211, two ends of the spring 212 are respectively fixed at the bottom of the installation hole 211 and the socket end of the pin 23, the fixed block 22 is in a circular cake shape, the sidewall of the fixed block 22 abuts against the sidewall of the rotating disc 21 to make the fixed block 22 tangent to the rotating disc 21, and a pin hole 221 adapted to the pin 23 is formed at the abutting position of the fixed block 22 and, the fixed block 22 realizes the free rotation of the rotating disc 21 by pushing the pin shaft 23 back into the mounting hole 211, and fixes and limits the rotating disc 21 through the partial insertion of the pin hole 221 and the pin shaft 23, thereby preventing the overturned cab of the motor vehicle from falling back.

To sum up, when an operator jacks up a cab of a motor vehicle, the turning shaft 10 rotates along with the turning shaft to drive the turning disc 21 fixed at one end of the turning shaft 10 to rotate, when the turning disc 21 rotates, the pin shaft 23 positioned outside the fixed block 22 is gradually pressed back into the mounting hole 211 by the curved surface of the fixed block 22 when approaching the fixed block 22, when the pin shaft 23 rotates to correspond to the pin hole 221, the pin shaft 23 is pressed into the pin hole 221 due to the elastic action of the spring 212, at the moment, one half of the pin shaft 23 is positioned in the mounting hole 211 in the pin hole 221, and the fixed block 22 is fixed, so the pin shaft 23 is locked, the turning disc 21 cannot rotate, so that the cab of the motor vehicle can be limited at the angle, and because the pin shafts 23 are uniformly distributed on the circumferential side wall of the turning disc 21, the turning disc 21 can be controlled to rotate at different angles by controlling the sparsity of the pin shafts 23 on the turning disc 21 to enable the pin shaft 23 to be matched with the pin hole And (4) limiting and controlling different turnover angles of the motor vehicle cab.

As shown in fig. 2 and 3, in order to further improve the convenience of controlling the overturn of the cab of the motor vehicle and realize that the overturn limiting control of different continuous angles can be completed by using the same overturn control device, the contact surface of the pin shaft 23 and the fixed block 22 is a cambered surface when the cab of the motor vehicle is overturned upwards and opened. The effect after setting like this lies in: on one hand, when the pin shaft 23 is positioned outside the fixed block 22 and moves towards the fixed block 22, the contact surface of the pin shaft 23 and the fixed block 22 is an arc surface, the friction force between the pin shaft 23 and the fixed block 22 is smaller, and the pin shaft 23 is more easily pressed into the mounting hole 211 along the same line, so that the labor intensity of operators for turning over the cab of the motor vehicle upwards is reduced; on the other hand, after the pin shaft 23 is matched with the pin hole 221, the cab of the motor vehicle is at a fixed turning angle, when the turning angle needs to be adjusted to be larger, an operator continues to turn the motor vehicle upwards, and as the contact surface of the pin shaft 23 and the fixed block 22 is an arc surface, the arc surface of the arc surface is in contact with the pin hole 221 and slides relatively, the pin shaft 23 is pressed back into the mounting hole 211, so that the cab of the motor vehicle can be turned upwards as long as an upward force is continuously applied to the cab of the motor vehicle until the required turning angle is reached.

As shown in fig. 3, in order to further reduce the frictional resistance between the pin shaft 23 and the pin hole 221 in the process of turning over the cab of the motor vehicle, the contact surface between the pin hole 221 and the pin shaft 23 when the cab of the motor vehicle is turned over upwards and opened is also set as a cambered surface, so that the frictional resistance when the pin hole 221 is in contact with the pin shaft 23 can be further reduced through the contact sliding of the two cambered surfaces, and the turning smoothness of the cab of the motor vehicle is improved; in addition, as shown in fig. 4, a first roller 222 having the same width as the pin hole 221 may be installed on a contact surface of the pin hole 221 with the pin shaft 23 when the cab of the vehicle is turned upward and opened, and the first roller 222 may be installed at an opening end of the pin hole 221. This converts sliding friction into rolling friction by the first roller 222, further reducing friction.

Usually, the operator turns over the cab of the vehicle at one end far from the turning shaft 10, in order to facilitate the operator to put the cab of the vehicle down at any time, the turning control device further comprises a retraction device of the pin 23, as shown in fig. 2, 5 and 6, the retraction device comprises a control unit and an operation unit, the control unit comprises a main rope 31 and a movable disc 32, a cavity 321 is arranged in the movable disc 32, an opening of the cavity 321 is arranged on an end face of one end of the movable disc 32, a columnar blind hole 213 is arranged in the center of the rotary disc 21, the opening of the blind hole 213 is arranged on an outer end face of the rotary disc 21, a first through hole 214 communicated with the bottom of the mounting hole 211 is further arranged on a side wall of the blind hole 213, the movable disc 32 is rotatably connected to an outer end face of the rotary disc 21, the blind hole 213 is communicated with the cavity 321, a second through hole 322 is arranged on a curved side wall, one end of the main rope 31 is connected with auxiliary ropes 311 the same in number as the pin shafts 23, the auxiliary ropes 311 penetrate through the first through holes 214 to be fixedly connected with the pin shafts 23, and the other end of the main rope 31 penetrates through the blind holes 213, the cavity 321 and the second through hole 322 in sequence to be connected with the operation unit; the operation unit is arranged at one end of the frame 13 far away from the turning shaft 10 and comprises a handle 33 and a wire spool 34, one end of the handle 33 is rotatably arranged at the bottom of the frame 13 through a bracket 35, the wire spool 34 is arranged at the outer side of the bracket 35, is fixed with the handle 33 and synchronously rotates with the handle 33 around a rotating shaft, and the other end of the main rope 31 is fixed on the curved side wall of the wire spool 34; the main rope 31 and the auxiliary rope 311 are both steel wire ropes having toughness, and the main rope 31 is in a tight and straight state when the handle 33 is not kneaded.

When the pin shaft 23 needs to be retracted into the mounting hole 211 to enable the motor vehicle cab to return, the knob 33 is turned to drive the wire spool 34 to rotate, the main rope 31 is connected to the curved side wall of the wire spool 34, the main rope 31 can be wound around the wire spool 34 to be tightened and pulled, and then the main rope 31 is transmitted into the blind hole 213 to enable the auxiliary rope 311 to be drawn into the blind hole 213, and then the pin shaft 23 is driven to move towards the mounting hole 211 until the main rope is completely retracted into the mounting hole 211, so that the limiting effect of the pin shaft 23 is lost, the rotating disc 21 can freely rotate, and therefore an operator can conveniently put down the motor vehicle cab at a far end at any time; in addition, because the movable disc 32 is rotatably connected with the rotating disc 21 and the control is completed through the steel wire rope, the movable disc 32 cannot rotate along with the rotating disc 21 in the rotating process, and the work of the turnover control device cannot be influenced in the process of turning over and down the cab of the motor vehicle.

In addition, in order to further reduce the abrasion of the main rope 31 caused by the friction of the blind hole 213, the cavity 321 and the second through hole 322 in sequence, as shown in fig. 6, a second roller 323 is installed in the cavity 321, the second roller 323 is fixedly installed on the inner side of the movable disc 32 far away from the opening of the cavity 321, and the main rope 31 passes through the second roller 323 in the cavity 321 and then passes through the second through hole 322.

As shown in fig. 7, the bracket 35 includes two side-symmetric surrounding edges 351, the surrounding edges 351 at two sides surround and clamp the tube of the frame 13 of the vehicle frame 13, and the surrounding edges 351 are provided with adjusting bolts 352. Thus, the detachable connection of the bracket 35 and the framework 13 is realized through the adjusting bolt 352, so that the position of the bracket 35 is adjusted, and the tensioning degree of the main rope 31 is convenient to adjust; because the main rope 31 is loosened to a certain extent due to long-term work or thermal expansion, the main rope 31 can be tightened only by loosening the adjusting bolt 352, moving the bracket 35 backwards and then fastening the bracket.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (7)

1. The turnover mechanism for the multi-stage adjustment of the motor vehicle cab comprises a turnover shaft (10), a first connecting support (11), a second connecting support (12) and a vehicle frame (13), wherein two ends of the turnover shaft (10) are fixedly connected with the vehicle frame (13) through the second connecting support (12), the turnover shaft (10) is rotatably connected with the second connecting support (12), the first connecting support (11) is fixedly arranged at two ends of the turnover shaft (10), the turnover mechanism is characterized by further comprising a turnover control device, the turnover control device is fixedly arranged at one side of the vehicle frame (13), the turnover control device comprises a rotating disc (21), a fixed block (22) and a pin shaft (23), the rotating disc (21) is fixedly arranged at one end of the turnover shaft (10) and is positioned at the outer side of the second connecting support (12), the pin shaft (23) is slidably arranged on the side wall of the rotating disc (21), a mounting hole (211) matched with the pin shaft (23) is formed in the circumferential side wall of the rotating disc (21), a spring (212) is arranged between the pin shaft (23) and the mounting hole (211), and the pin shaft (23) is connected with the mounting hole (211) through the spring (212); the fixed block (22) are the cake form, the lateral wall butt of fixed block (22) is on rolling disc (21) lateral wall, fixed block (22) and rolling disc (21) butt department be equipped with pinhole (221) of round pin axle (23) adaptation, thereby fixed block (22) are pegged graft through pinhole (221) and the part of round pin axle (23) and are fixed spacing motor vehicle driver's cabin fall back that prevents to turn up with rolling disc (21).

2. The multistage-adjustable turnover mechanism of a motor vehicle cab according to claim 1, characterized in that the pins (23) are uniformly distributed on the circumferential side wall of the rotating disc (21), and the contact surface of the pins (23) with the fixed block (22) is an arc surface when the motor vehicle cab is turned upwards and opened.

3. The multistage adjustable turnover mechanism of a motor vehicle cab as claimed in claim 2, wherein the contact surface of the pin hole (221) with the pin shaft (23) is also set to be a curved surface when the motor vehicle cab is turned upwards and opened.

4. The turnover mechanism for multi-stage adjustment of a motor vehicle cab according to any one of claims 1 to 3, wherein the pin hole (221) is provided with a first roller (222) on a contact surface with the pin shaft (23) when the motor vehicle cab is turned upwards and opened, and the first roller (222) is arranged at an opening end of the pin hole (221).

5. The turnover mechanism for multi-stage adjustment of the cab of a motor vehicle as claimed in claim 4, wherein the turnover control device further comprises a retraction device, the retraction device comprises a control unit and an operation unit, the control unit comprises a main rope (31) and a movable disc (32), a cavity (321) is arranged in the movable disc (32), an opening of the cavity (321) is arranged on one end face of the movable disc, a columnar blind hole (213) is arranged at the center of the rotary disc (21), the opening of the blind hole (213) is arranged on the outer end face of the rotary disc (21), a first through hole (214) communicated with the bottom of the mounting hole (211) is further arranged on the side wall of the blind hole (213), the movable disc (32) is rotatably connected to the outer end face of the rotary disc (21) to communicate the blind hole (213) with the cavity (321), a second through hole (322) is arranged on the curved side wall of the movable disc (32), one end of the main rope (31) is connected with auxiliary ropes (311) the number of which is the same as that of the pin shafts (23), the auxiliary ropes (311) penetrate through the first through holes (214) to be fixedly connected with the pin shafts (23), and the other end of the main rope (31) penetrates through the blind holes (213), the cavity (321) and the second through hole (322) in sequence to be connected with the operation unit; the operation unit is installed and is kept away from the one end of trip shaft (10) on frame (13), including handle (33) and wire reel (34), the bottom at frame (13) is installed in the rotation of support (35) is passed through to the one end of handle (33), wire reel (34) set up in support (35) outside and handle (33) fixed and with handle (33) revolve the synchronous rotation of axis of rotation, the other end of main rope (31) is fixed on the curved surface lateral wall of wire reel (34).

6. The multistage adjustable turnover mechanism of a motor vehicle cab as claimed in claim 5, wherein a second roller (323) is installed in the cavity (321), the second roller (323) is fixedly installed on the inner side of the movable plate (32) far away from the opening of the cavity (321), and the main rope (31) passes through the second through hole (322) after passing through the second roller (323) in the cavity (321).

7. The multistage-adjustable turnover mechanism of a motor vehicle cab according to claim 6, characterized in that the bracket (35) comprises two side-symmetric surrounding edges (351), the surrounding edges (351) on the two sides surround and clamp framework pipes of the vehicle frame (13), and the surrounding edges (351) are provided with adjusting bolts (352).

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