Damping structure of cab

Abstract

A cab damping structure relates to the technical field of damping structures and comprises a cab base and a frame, the front end of the cab base is hinged to the frame through a floating damping structure, and the rear end of the cab base is supported on the frame through a nitrogen damping spring. And a vertical limiting structure and a transverse limiting structure are arranged between the rear end part of the cab base and the frame. The damping structure of the tractor cab solves the problems that in the prior art, most damping structures of tractor cabs are rubber plates, the damping effect is poor, a comfortable driving environment cannot be provided, when an existing damping structure of the tractor cab is used, limiting in the vertical direction and the transverse direction is not achieved, the cab is likely to shake seriously, and the service life of the cab is prolonged. And the stability in the working process cannot be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing structures, in particular to a shock absorbing structure of a cab. Background Art

[0002] The cab of existing engineering machinery equipment is connected to the platform in a floating manner through rubber vibration isolation pads and elastic damping elements. The bump load during operation is absorbed and buffered by the shock absorber, which has a certain vibration isolation effect. However, with the existing cab shock absorption method, the vibration isolation ability of the shock absorber becomes the key to affecting the size of the impact load of the cab. However, the large dynamic stiffness of the shock absorber causes the overall vibration isolation effect of the suspension to be poor. Although the vibration and impact loads during operation are absorbed by the shock absorber, the bump load, especially the vertical bump load, is transmitted to the driver's seat, making the driver very easy to fatigue after long-term operation.

[0003] A patent with publication number CN215904618U is disclosed in the prior art. The solution includes a cab assembly, a swing arm, a mounting platform, a first direct drive motor, a second direct drive motor, a gyroscope sensor and a central controller. The gyroscope sensor installed at the bottom of the cab assembly can sense the acceleration change data of the cab assembly in real time, and transmit it to the central controller through an input signal line. The central controller generates deflection signal data of the first direct drive motor and the second direct drive motor by calculating the acceleration data, and transmits it to the first direct drive motor and the second direct drive motor through a control signal line to deflect the direct drive motor, thereby adjusting the posture of the cab and achieving stability of the cab.

[0004] As the existing devices including the above patents are used, the shortcomings of the technology are gradually exposed, which are mainly manifested in the following aspects:

[0005] First, the existing shock-absorbing structures of tractor cabs are mostly rubber plates, which have poor shock-absorbing effects and cannot provide a comfortable driving environment.

[0006] Second, the existing shock-absorbing structure of the tractor cab does not have vertical and lateral limits when in use, which makes the cab prone to large shaking and cannot ensure stability during operation.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] In view of the defects in the prior art, the utility model solves the problem that the shock-absorbing structure of the tractor cab in the traditional technology is mostly a rubber plate, the shock-absorbing effect is very poor, and it is impossible to provide a comfortable driving environment. The shock-absorbing structure of the existing tractor cab does not have vertical and lateral limits when in use, which makes the cab prone to large shaking and cannot ensure stability during operation.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] The cab shock-absorbing structure comprises a cab base and a vehicle frame, wherein the front end of the cab base is hinged to the vehicle frame by means of a floating shock-absorbing structure.

[0011] The rear end of the cab base is supported on the vehicle frame by a nitrogen shock-absorbing spring.

[0012] A vertical limiting structure and a lateral limiting structure are provided between the rear end of the cab base and the vehicle frame.

[0013] As an optimized solution, the lateral limiting structure includes a connecting seat fixedly connected to the base of the cab, a balancing rod arranged laterally is hinged on the connecting seat, and the other end of the balancing rod is hinged to the base of the cab.

[0014] As an optimized solution, a first hinged protrusion is fixedly connected to the connecting seat, a second hinged protrusion is fixedly connected to the cab base, and both ends of the balance bar are correspondingly hinged to the first hinged protrusion and the second hinged protrusion.

[0015] As an optimized solution, the hinge shafts of the first hinge protrusion and the second hinge protrusion are respectively covered with rubber sleeves.

[0016] As an optimized solution, the vertical limiting structure includes an upper limit pull belt, the lower end of the upper limit pull belt is connected to the connecting seat, and the upper end of the upper limit pull belt is connected to the cab base.

[0017] As an optimized solution, a lower ear plate connected to the lower end of the upper limit pull strap is fixedly connected to the connecting seat, and an upper ear plate connected to the upper end of the upper limit pull strap is fixedly connected to the cab base.

[0018] As an optimized solution, the vertical limiting structure includes a lower limiting rubber cone fixedly connected to the connecting seat, and the conical end of the lower limiting rubber cone is arranged upward. When the cab base moves downward, it abuts against the upper end of the lower limiting rubber cone.

[0019] As an optimized solution, a support platform is fixedly connected to the connecting seat, and the lower limit rubber cone is fixedly connected to the upper surface of the support platform.

[0020] As an optimized solution, the lower end of the nitrogen shock-absorbing spring is hinged to the connecting seat, and the upper end of the nitrogen shock-absorbing spring is hinged to the cab base.

[0021] As an optimized solution, the floating shock-absorbing structure includes a polyurethane rubber sleeve, and the polyurethane rubber sleeve is sleeved on the hinge shaft between the cab base and the frame.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] By setting a polyurethane rubber sleeve at the front end of the cab base and the hinge center of the frame, an up and down floating effect is provided to improve the shock absorption effect;

[0024] The main shock absorber at the rear support point is a nitrogen shock absorber spring, which improves the shock absorption performance compared to the rubber plate in traditional technology;

[0025] The left and right limiters use a balance bar to limit the horizontal direction of the cab base to prevent it from swaying horizontally, and the hinge points are equipped with rubber sleeves to improve the shock absorption effect.

[0026] The upper limit pull belt is set in the upper direction to effectively prevent the cab base from swinging upward excessively, and the upper limit pull belt is soft, which can achieve shock-absorbing and limiting in the upper direction of the cab base;

[0027] A lower limit rubber cone is arranged in the lower direction to prevent the cab base from excessively sinking downward, and the lower limit rubber cone is soft and can realize shock-absorbing and limiting in the lower direction of the cab base. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the balance bar of the utility model.

[0031] In the figure: 1-frame; 2-cab base; 3-nitrogen shock-absorbing spring; 4-connecting seat; 5-balance bar; 6-first hinged protrusion; 7-second hinged protrusion; 8-upper limit pull strap; 9-lower limit rubber cone; 10-lower ear plate; 11-upper ear plate; 12-support platform; 13-floating shock-absorbing structure. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0033] like Figure 1 and Figure 2 As shown, the cab shock absorbing structure includes a cab base 2 and a vehicle frame 1. The front end of the cab base 2 is hinged to the vehicle frame 1 by means of a floating shock absorbing structure 13.

[0034] The rear end of the cab base 2 is supported on the vehicle frame 1 by a nitrogen shock absorbing spring 3.

[0035] A vertical limiting structure and a lateral limiting structure are provided between the rear end of the cab base 2 and the vehicle frame 1 .

[0036] The transverse limiting structure includes a connecting seat 4 fixedly connected to the cab base 2 , a balancing rod 5 arranged transversely is hinged on the connecting seat 4 , and the other end of the balancing rod 5 is hinged to the cab base 2 .

[0037] A first hinged protrusion 6 is fixedly connected to the connecting seat 4 , a second hinged protrusion 7 is fixedly connected to the cab base 2 , and two ends of the balancing rod 5 are hinged to the first hinged protrusion 6 and the second hinged protrusion 7 correspondingly.

[0038] The hinge shafts of the first hinge protrusion 6 and the second hinge protrusion 7 are respectively covered with rubber sleeves.

[0039] The vertical limiting structure comprises an upper limit pull belt 8 , the lower end of which is connected to the connecting seat 4 , and the upper end of which is connected to the cab base 2 .

[0040] A lower ear plate 10 connected to the lower end of the upper limit pull strap 8 is fixedly connected to the connecting seat 4 , and an upper ear plate 11 connected to the upper end of the upper limit pull strap 8 is fixedly connected to the cab base 2 .

[0041] The vertical limiting structure includes a lower limiting rubber cone 9 fixedly connected to the connecting seat 4 . The conical end of the lower limiting rubber cone 9 is arranged upwards. When the cab base 2 moves downwards, it abuts against the upper end of the lower limiting rubber cone 9 .

[0042] A support platform 12 is fixedly connected to the connecting seat 4 , and the lower limit rubber cone 9 is fixedly connected to the upper surface of the support platform 12 .

[0043] The lower end of the nitrogen shock-absorbing spring 3 is hinged to the connecting seat 4 , and the upper end of the nitrogen shock-absorbing spring 3 is hinged to the cab base 2 .

[0044] The floating shock-absorbing structure 13 includes a polyurethane rubber sleeve, which is sleeved on the hinge shaft between the cab base 2 and the vehicle frame 1 .

[0045] The hinged position is hinged in the form of a sleeve and an articulated shaft, the inner ring of the rubber sleeve or polyurethane rubber sleeve is sleeved on the articulated shaft, and the outer ring is sleeved in the sleeve hole to achieve shock absorption.

[0046] The working principle of this device is:

[0047] By arranging a polyurethane rubber sleeve at the hinge center between the front end of the cab base 2 and the frame 1, an up and down floating effect is provided, thereby improving the shock absorption effect;

[0048] The main shock absorber at the rear support point is a nitrogen shock absorber spring 3, which has improved shock absorption performance compared to the rubber plate in traditional technology;

[0049] The left and right limit uses the balance bar 5 to limit the horizontal direction of the cab base 2 to prevent it from shaking horizontally, and the hinge point has a rubber sleeve to improve the shock absorption effect;

[0050] The upper limit pull belt 8 is arranged in the upper direction to effectively prevent the cab base 2 from swinging upward excessively, and the upper limit pull belt 8 is soft, which can realize the shock-absorbing limit in the upper direction of the cab base 2;

[0051] A lower limit rubber cone 9 is provided in the lower direction to prevent the cab base 2 from excessively sinking downward, and the lower limit rubber cone 9 is soft and can achieve shock-absorbing and limiting of the cab base 2 in the lower direction.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. The shock absorbing structure of the cab is characterized by: The vehicle comprises a cab base (2) and a vehicle frame (1), wherein the front end of the cab base (2) is hinged to the vehicle frame (1) by means of a floating shock absorbing structure (13). The rear end of the cab base (2) is supported on the vehicle frame (1) by a nitrogen shock absorbing spring (3). A vertical limiting structure and a lateral limiting structure are provided between the rear end of the cab base (2) and the vehicle frame (1).

2. The shock absorbing structure of the cab according to claim 1, characterized in that: The transverse limiting structure comprises a connecting seat (4) fixedly connected to the cab base (2), a transversely arranged balancing rod (5) being hinged on the connecting seat (4), and the other end of the balancing rod (5) being hinged to the cab base (2).

3. The shock absorbing structure of the cab according to claim 2, characterized in that: A first hinged protrusion (6) is fixedly connected to the connection seat (4), a second hinged protrusion (7) is fixedly connected to the cab base (2), and two ends of the balance bar (5) are correspondingly hinged to the first hinged protrusion (6) and the second hinged protrusion (7).

4. The shock absorbing structure of the cab according to claim 3, characterized in that: The hinge shafts of the first hinge protrusion (6) and the second hinge protrusion (7) are respectively sleeved with rubber sleeves.

5. The shock absorbing structure of the cab according to claim 4, characterized in that: The vertical limiting structure comprises an upper limit pull belt (8), the lower end of the upper limit pull belt (8) is connected to the connecting seat (4), and the upper end of the upper limit pull belt (8) is connected to the cab base (2).

6. The shock absorbing structure of the cab according to claim 5, characterized in that: A lower ear plate (10) connected to the lower end of the upper limit pull belt (8) is fixedly connected to the connecting seat (4), and an upper ear plate (11) connected to the upper end of the upper limit pull belt (8) is fixedly connected to the cab base (2).

7. The shock absorbing structure of the cab according to claim 6, characterized in that: The vertical limiting structure comprises a lower limiting rubber cone (9) fixedly connected to the connecting seat (4), wherein the conical end of the lower limiting rubber cone (9) is arranged upwards, and when the cab base (2) moves downwards, it abuts against the upper end of the lower limiting rubber cone (9).

8. The shock absorbing structure of the cab according to claim 7, characterized in that: A support platform (12) is fixedly connected to the connecting seat (4), and the lower limit rubber cone (9) is fixedly connected to the upper surface of the support platform (12).

9. The shock absorbing structure of the cab according to claim 8, characterized in that: The lower end of the nitrogen shock absorbing spring (3) is hinged to the connecting seat (4), and the upper end of the nitrogen shock absorbing spring (3) is hinged to the cab base (2).

10. The shock absorbing structure of the cab according to claim 9, characterized in that: The floating shock-absorbing structure (13) comprises a polyurethane rubber sleeve, and the polyurethane rubber sleeve is sleeved on the hinge shaft between the cab base (2) and the vehicle frame (1).

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