Sliding type cab supporting mechanism and engineering machinery

Abstract

The utility model provides a sliding type cab supporting mechanism and engineering machinery. The sliding type cab supporting mechanism comprises a protective frame and a supporting rod. The lower end of the protective frame is connected to the chassis, the top of the protective frame is higher than the engine, the top face of the protective frame is lower than the bottom face of the cab, and the cab is movably arranged in the front-back direction of the chassis. The supporting rod is rotationally arranged on the protection frame through a connecting shaft in the middle section, and the connecting shaft is parallel to the width direction of the cab. When the cab moves to the position above the protection frame, the tops of the front end and the rear end of the supporting rod are supported on the bottom face of the cab. When the cab moves to the rear portion of the protection frame, under the action of gravity, the rear ends of the supporting rods vertically face downwards, and the upper ends of the supporting rods protrude out of the top face of the protection frame. According to the scheme, the supporting stability of the cab can be effectively improved, and driving safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering machinery cab mounting structure technical field especially relates to a kind of sliding cab support mechanism and engineering machinery. BACKGROUND

[0002] The cab of engineering vehicle mainly has fixed installation, turnover installation and sliding installation mode, for example, Figure 1 、 Figure 3 The rock drilling jumbo shown adopts front and rear sliding installation structure, the top of its chassis is provided with a pair of guide rails along the front and rear directions, and a sliding trolley is arranged on the guide rails, the cab is installed at the front end of the sliding trolley and is suspended, when the cab moves to the front end of the chassis, the cab is suspended above the engine compartment to improve the observation range of the cab. However, the suspended cab also causes the sliding trolley to bear a large load, which can easily cause fatigue fracture at the connection between the cab and the sliding trolley during long-term operation, affecting driving safety. SUMMARY

[0003] To solve the problems in the prior art, the utility model provides a kind of sliding cab support mechanism and engineering machinery, which can effectively improve the support stability of the cab and ensure driving safety.

[0004] To achieve the purpose of the utility model, the following solutions are adopted:

[0005] A kind of sliding cab support mechanism, comprising: protective frame and support rod.

[0006] The lower end of the protective frame is connected to the chassis, the top is higher than the engine, and the top surface of the protective frame is lower than the bottom surface of the cab, and the cab is arranged to move along the front and rear directions of the chassis;

[0007] The support rod is rotatably arranged on the protective frame by the connecting shaft of the middle segment, and the connecting shaft is parallel to the width direction of the cab;

[0008] When the cab moves above the protective frame, the top of the front end and the rear end of the support rod is supported on the bottom surface of the cab;

[0009] When the cab moves to the rear of the protective frame, the rear end of the support rod is vertically downward under the action of gravity, and the upper end of the support rod protrudes from the top surface of the protective frame.

[0010] The utility model has the following advantages:

[0011] 1. The support stability of the sliding cab can be improved, and the cab can be prevented from being in a suspended state, thereby effectively improving the use safety of the cab.

[0012] 2. The support rod supports the front end and the middle part of the cab bottom, and has higher support stability.

[0013] 3. The combination and separation process between the cab and the support rod is simple. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are only for illustrating the selected embodiments, rather than all possible embodiments, and are not intended to limit the scope of the utility model.

[0015] Figure 1 A structural schematic view when the sliding cab moves to the front end of the chassis is shown.

[0016] Figure 2 A structural schematic view when the sliding cab moves to the rear of the engine is shown. Figure 1 An enlarged view of the middle A.

[0017] Figure 3 A structural schematic view when the sliding cab moves to the rear of the engine is shown.

[0018] Figure 4 A structural schematic view of the support rod is shown.

[0019] Mark in the figure: guard frame-1, cab-2, support rod-3, stop block-31, horizontal section-32, inclined section-33, buffer block-34, rubber pad-35, elastic member-4. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the embodiments of the utility model are described in detail below with reference to the drawings, but the embodiments described by the utility model are part of the embodiments of the utility model, rather than all the embodiments.

[0021] As shown in the drawings, a sliding cab support mechanism comprises: a guard frame 1 and a support rod 3. Figures 1 to 3

[0022] The lower end of the guard frame 1 is connected to the chassis, the top is higher than the engine, and the top surface of the guard frame 1 is lower than the bottom surface of the cab 2, and the cab 2 is arranged to move along the front-rear direction of the chassis.

[0023] The support rod 3 is rotatably arranged on the guard frame 1 through a connecting shaft of the middle section, and the connecting shaft is parallel to the width direction of the cab 2.

[0024] Specifically, as shown in the drawings, Figure 1 , Figure 2 When the cab 2 moves above the guard frame 1, the top of the front end and the rear end of the support rod 3 is supported on the bottom surface of the cab 2.

[0025] Specifically, as shown in the drawings, Figure 3 ​​As shown, when the cab 2 moves to the rear of the protective frame 1, under the action of gravity, the rear end of the support rod 3 is vertically downward, and the upper end of the support rod 3 protrudes from the top surface of the protective frame 1.

[0026] As the cab 2 moves forward from the rear of the chassis, the front end of the cab 2 pushes the upper end of the support rod 3 downward, while the rear end of the support rod 3 automatically swings upward. When the cab 2 moves forward to the predetermined position, the top surfaces of both the front and rear ends of the support rod 3 are supported on the bottom surface of the cab 2, thus providing support points at the front and lower middle parts of the cab 2. This achieves the purpose of supporting the suspended cab 2. This support structure effectively reduces the stress on the installation parts of the cab 2 and improves the support stability of the cab 2. As the cab 2 moves rearward from the chassis, the cab 2 will gradually move backward relative to the front end of the support rod 3, causing the front end of the support rod 3 to separate from the bottom surface of the cab 2. The rear end of the support rod 3 will also automatically swing downward under the action of gravity, causing the rear end of the support rod 3 to... The cab 2 separates from the driver's cab 2. As the front end of the driver's cab 2 gradually separates from the front end of the support rod 3, the support rod 3 will return to a state where the rear end is vertically downward and the front end protrudes above the protective frame 1. The connection and separation process between the driver's cab 2 and the support rod 3 is entirely accomplished by the movement of the driver's cab 2. There is no need to set up a separate drive device to control the swinging or lifting of the support rod 3, which makes the connection and separation between the driver's cab 2 and the support rod 3 very convenient and smooth. In addition, the support rod 3 set in this solution supports the bottom surface of the driver's cab 2 through both ends, and the support rod 3 is rotatable around the connecting shaft set in the middle. It can effectively adapt to the concave and convex structure of the bottom surface of the driver's cab 2. Even if the bottom surface of the driver's cab 2 is an inclined surface, it can ensure that the top surfaces of both ends of the support rod 3 abut against the bottom of the driver's cab 2 and achieve the purpose of support.

[0027] Preferred, such as Figure 2 , Figure 4 As shown, a stop 31 is provided at the top of the front end of the support rod 3 to block the front face of the cab 2, thereby limiting the extreme position of the cab 2 moving forward and ensuring the accuracy of the cab 2 stopping.

[0028] Preferred, such as Figure 2 , Figure 4 As shown, the front end of the support rod 3 is provided with a horizontal section 32, and there is an inclined section 33 between the horizontal section 32 and the connecting shaft. When the cab 2 moves on the horizontal section 32, the angle between the support rod 3 and the top surface of the chassis remains constant, and the top surface of the rear end of the support rod 3 is supported on the bottom surface of the cab 2. When the cab 2 moves on the inclined section 33, the support rod 3 swings around the connecting shaft. By setting the horizontal section 32, the cab 2 can have a certain amount of movement space when supported by the front end and the rear end of the support rod 3, so as to ensure that the cab 2 stops at the predetermined position.

[0029] Preferred, such asFigure 4 As shown in the figure, the bottom of the front end of the support rod 3 is provided with a buffer block 34 to prevent impact between the front end of the support rod 3 and the protective frame 1.

[0030] Preferably, as shown in the figure, Figure 2 , Figure 4 the top of the rear end of the support rod 3 is provided with a rubber pad 35, the top surface of the rubber pad 35 is used to abut against the bottom surface of the cab 2 to prevent impact and vibration between the cab 2 and the support rod 3.

[0031] Preferably, as shown in the figure, Figure 2 , Figure 4 the top of the rear end of the support rod 3 is provided with an elastic member 4, when the top surfaces of the front and rear ends of the support rod 3 are in contact with the bottom surface of the cab 2, the elastic member 4 is in a compressed state, and the elastic member 4 is arranged to reduce the impact generated when the top surface of the rear end of the support rod 3 is in contact with the cab 2, so that the support rod 3 supports the cab 2 more gently. More specifically, the elastic member 4 is a spring sheet or a cylindrical spring.

[0032] Preferably, as shown in the figure, Figure 2 the parts of the bottom surface of the cab 2 used to abut against the support rod 3 are all provided with a support beam 21 to ensure the structural strength of the cab 2 and prevent deformation of the support point.

[0033] Embodiment 2: an engineering machine comprising the sliding cab support mechanism described in embodiment 1.

[0034] The above description is only preferred embodiments of the present application and does not mean that it is the only or limiting one. Those skilled in the art should understand that various changes or equivalent replacements made to the present application without departing from the scope of the present application are all within the scope of protection of the present application.

Claims

1. A skid steer cab support mechanism, characterized by, The application relates to a support mechanism for a sliding cab. The support mechanism comprises a protection frame (1) connected to a chassis at a lower end and protruding above an engine at a top end, wherein the top surface of the protection frame (1) is lower than the bottom surface of a cab (2) arranged to move along the front-rear direction of the chassis; a support rod (3) rotatably arranged on the protection frame (1) through a connecting shaft at a middle segment, wherein the connecting shaft is parallel to the width direction of the cab (2); when the cab (2) moves above the protection frame (1), the top of the front end and the top of the rear end of the support rod (3) are supported on the bottom surface of the cab (2); when the cab (2) moves behind the protection frame (1), the rear end of the support rod (3) vertically points downward under the action of gravity, and the top end of the support rod (3) protrudes from the top surface of the protection frame (1). The top of the front end of the support rod (3) is provided with a stop block (31) for resisting the front end surface of the cab (2). The front end of the support rod (3) is provided with a horizontal segment (32), and the horizontal segment (32) and the connecting shaft have an inclined segment (33); when the cab (2) moves on the horizontal segment (32), the angle between the support rod (3) and the top surface of the chassis remains constant, and the rear end top surface of the support rod (3) supports the bottom surface of the cab (2); when the cab (2) moves on the inclined segment (33), the support rod (3) swings around the connecting shaft. The bottom of the front end of the support rod (3) is provided with a buffer block (34).

2. A sliding cab support mechanism according to claim 1, wherein The top of the rear end of the support rod (3) is provided with a rubber pad (35), and the top surface of the rubber pad (35) is used for abutting against the bottom surface of the cab (2).

3. A sliding cab support mechanism according to claim 1 or 2, wherein The top of the rear end of the support rod (3) is provided with an elastic element (4), which is in a compressed state when the front-rear end top surfaces of the support rod (3) are in contact with the bottom surface of the cab (2).

4. A sliding cab support mechanism according to claim 1, wherein The elastic element (4) is a spring sheet or a cylindrical spring.

5. A sliding cab support mechanism according to claim 1 wherein, The bottom surface of the cab (2) is provided with a support beam (21) for abutting against the support rod (3).

6. A sliding cab support mechanism according to claim 1 wherein, The application further discloses a sliding cab support mechanism comprising any one of the support mechanisms according to claims 1-8.

7. A sliding cab support mechanism according to claim 6, wherein ​ 8. A sliding cab support mechanism according to claim 1 wherein, ​ 9. A working machine, characterized in that ​

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