Cab mounting frame and engineering machinery thereof

Abstract

The utility model belongs to the field of engineering machinery, and discloses a cab mounting frame and engineering machinery thereof. The cab mounting frame comprises a driving bracket, a bearing bracket and a rolling bearing structure; the driving support extends in the first direction and is used for being installed on an engineering machinery platform. The bearing bracket is movably mounted on the driving bracket in the first direction, and the bearing bracket is used for bearing a cab; the rolling bearing structure comprises a rolling wheel, and the rolling wheel is fixedly installed on one of the driving support and the bearing bracket and abuts against the other one of the driving support and the bearing bracket in a rolling mode. According to the cab installation frame, rolling friction is generated between the driving support and the bearing bracket through the idler wheels, the friction coefficient is reduced, and therefore stable movement of the whole cab can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a cab mounting frame and engineering machinery thereof. Background Art

[0002] Crawler cranes, heavy excavators and other large-scale construction machinery are usually very large in size when in operation. Therefore, they need to be disassembled for road transportation during transfer. At present, the domestic transportation width of non-detachable large parts is generally required to be within 3 meters. However, the width of the driver's cab of some super-large construction machinery when in operation will far exceed 3 meters. Therefore, it is necessary to consider the two position requirements of the driver's cab at the same time during the design to meet both transportation and working conditions.

[0003] In the existing solution, the driver's cab bracket is movably installed on the construction machinery, and the position of the driver's cab is shifted sideways by sliding between the driving structures, thereby changing the overall width. However, sliding is achieved directly through the friction between the inner and outer rods, resulting in an excessively large friction coefficient and high pressure during the translation process, which requires long-term lubrication and maintenance of the inner and outer movable rods, otherwise the translation will not be smooth enough. Utility Model Content

[0004] The main purpose of the utility model is to provide a cab mounting frame and an engineering machinery thereof, aiming to solve the problem that the cab translation is not smooth enough.

[0005] To achieve the above object, the utility model provides a cab mounting frame, comprising:

[0006] A driving bracket is extended along a first direction, and the driving bracket is used to be installed on an engineering machinery platform;

[0007] a bearing bracket, movably mounted on the driving bracket along the first direction, the bearing bracket being used to bear the driving cab; and

[0008] The rolling bearing structure comprises a roller, wherein the roller is fixedly mounted on one of the driving bracket and the bearing bracket and rollingly abuts against the other of the driving bracket and the bearing bracket.

[0009] Optionally, one of the bearing bracket and the driving bracket is at least partially hollow so as to be sleeved on the other.

[0010] Optionally, a sliding channel extending along the first direction is formed on the bearing bracket;

[0011] The driving bracket at least partially moves linearly in the sliding channel.

[0012] Optionally, a plurality of rollers are provided, and the plurality of rollers are arranged at intervals along the circumference of the driving bracket; and / or,

[0013] A plurality of rollers are provided, and the plurality of rollers are arranged at intervals along the first direction.

[0014] Optionally, the cab mounting frame also includes a first linear drive device, which includes a first fixed end and a first movable end that can move linearly relative to each other, one of the first fixed end and the first movable end is connected to the drive bracket, and the other is connected to the support bracket.

[0015] Optionally, the first fixed end is hingedly mounted on one of the driving bracket and the carrying bracket, and the first movable end is hingedly mounted on the other of the driving bracket and the carrying bracket.

[0016] Optionally, the cab mounting frame further includes a circuit board assembly and a limit switch, the limit switch includes an action portion and a contact portion, and the circuit board assembly is electrically connected to the first linear drive device and the contact portion;

[0017] The action part is arranged on one of the driving bracket and the carrying bracket, and the contact part is arranged on the other of the driving bracket and the carrying bracket. After the action part touches the contact part, the contact part disconnects the access circuit.

[0018] Optionally, the bearing bracket includes:

[0019] A mounting bracket is movably mounted on the driving bracket along the first direction; and

[0020] The load-bearing bracket is rotatably mounted on the mounting bracket around an axis extending in the first direction, and the load-bearing bracket is used to bear the cab.

[0021] Optionally, the cab mounting frame also includes a second linear drive device, which includes a second fixed end and a second movable end that can move linearly relative to each other, one of the second fixed end and the second movable end is connected to the mounting bracket, and the other is connected to the supporting bracket.

[0022] The utility model also provides an engineering machine, comprising:

[0023] Engineering machinery platforms;

[0024] A cab mounting frame comprises the cab mounting frame according to the above, wherein the drive bracket is mounted on the engineering machinery platform.

[0025] Optionally, the cab mounting frame further comprises a first linear drive device and / or a second linear drive device, and at least one of the first linear drive device and the second linear drive device comprises a hydraulic cylinder;

[0026] The engineering machinery further comprises a hydraulic drive system, and the hydraulic drive system comprises:

[0027] tank;

[0028] a hydraulic pump, wherein the pump inlet is connected to the oil tank; and

[0029] A reversing valve is formed with a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, wherein the first connecting port is connected to the pump outlet of the hydraulic pump, the second connecting port is connected to the oil tank, the third connecting port is connected to the rod chamber of the hydraulic cylinder, and the fourth connecting port is connected to the rodless chamber of the hydraulic cylinder. The reversing valve can switch the first connecting port to be connected to one of the third connecting port and the fourth connecting port, and correspondingly, the second connecting port is connected to the other of the third connecting port and the fourth connecting port.

[0030] Optionally, the hydraulic drive system further includes a relief valve, wherein the relief valve is arranged between a pump outlet of the hydraulic pump and the oil tank.

[0031] Optionally, a first one-way shut-off valve is further provided on the oil circuit between the third communication port and the rod chamber of the hydraulic cylinder; and / or,

[0032] A second one-way shut-off valve is also provided on the oil circuit between the fourth communication port and the rodless chamber of the hydraulic cylinder.

[0033] The utility model provides a cab mounting frame, wherein the driving bracket is used to be mounted on an engineering machinery platform, the bearing bracket is movably mounted on the driving bracket, and the cab is mounted on the bearing bracket, so that the gap size between the engineering machinery platform and the cab can be changed, wherein the roller is arranged on one of the driving bracket and the bearing bracket, and when the driving bracket and the bearing bracket generate relative movement, rolling friction is generated between the driving bracket and the bearing bracket through the roller, thereby reducing the friction coefficient, thereby realizing smooth movement of the entire cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a cab mounting frame provided by an embodiment of the utility model;

[0035] Figure 2 yes Figure 1 A schematic diagram of the front cross-sectional structure of the middle cab mounting frame;

[0036] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of the middle cab mounting frame from top view;

[0037] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of another embodiment of the middle cab mounting frame;

[0038] Figure 5 It is a three-dimensional structural schematic diagram of an engineering machinery provided by an embodiment of the utility model;

[0039] Figure 6 yes Figure 5 Schematic diagram of the connection of the hydraulic drive system.

[0040] Description of Figure Numbers:

[0041] 1000, 100, cab mounting frame; 200, engineering machinery platform; 1, driving bracket; 2, bearing bracket; 21, 22, 31, rollers; 4, limit switch; 51, first linear drive device; 52, second linear drive device; 6, oil tank; 7, hydraulic pump; 8, reversing valve; 9, overflow valve.

[0042] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0046] See also Figure 1 The utility model provides a cab mounting frame 100, comprising a driving bracket 1, a bearing bracket 2 and a rolling bearing structure; the driving bracket 1 is extended along a first direction, and the driving bracket 1 is used to be installed on an engineering machinery platform; the bearing bracket 2 is movably installed on the driving bracket 1 along the first direction, and the bearing bracket 2 is used to carry the cab; the rolling bearing structure comprises a roller 31, and the roller 31 is fixedly installed on one of the driving bracket 1 and the bearing bracket 2, and rollingly abuts against the other of the driving bracket 1 and the bearing bracket 2.

[0047] In the cab mounting frame 100 provided by the utility model, the driving bracket 1 is used to be installed on the engineering machinery platform, the bearing bracket 2 is movably installed on the driving bracket 1, and the cab is installed on the bearing bracket 2. The bearing bracket 2 is movably arranged relative to the driving bracket 1. The size of the gap between the engineering machinery platform and the cab can be changed by the movable bearing bracket 2. When it is necessary to reduce the gap between the engineering machinery platform and the cab, the bearing bracket 2 is controlled to move toward the engineering machinery platform so that the cab is close to the engineering machinery platform. When working, the bearing bracket 2 is driven away from the engineering machinery platform so that the cab is away from the engineering machinery platform, providing a higher visual environment for the cab. Among them, a roller 31 is arranged on one of the driving bracket 1 and the bearing bracket 2. When the driving bracket 1 and the bearing bracket 2 generate relative movement, rolling friction is generated between the driving bracket 1 and the bearing bracket 2 through the roller 31, thereby reducing the friction coefficient, thereby achieving smooth movement of the entire cab.

[0048] It should be noted that there are many ways to movably install the supporting bracket 2 on the driving bracket 1, such as setting a slide rail and a slide groove between the opposite end surfaces of the supporting bracket 2 and the driving bracket 1, so that the supporting bracket 2 can be slidably installed on the driving bracket 1 along the slide rail and the slide groove.

[0049] Further, in this embodiment, please refer to Figures 2 to 3 , one of the bearing bracket 2 and the driving bracket 1 is at least partially hollow and is sleeved on the other. In this embodiment, the bearing bracket 2 and the driving bracket 1 are movably mounted in a sleeve manner, and the movement is limited to the hollow part, so that foreign matter is not easily introduced between the driving bracket 1 and the bearing bracket 2 due to the exposed structure, thereby ensuring the reliability of the connection.

[0050] Specifically, in this embodiment, a sliding channel extending along the first direction is formed on the bearing bracket 2; the driving bracket 1 at least partially moves linearly in the sliding channel. In this embodiment, the sliding channel is formed on the bearing bracket 2, and the driving bracket 1 is sleeved in the bearing bracket 2, so that the cab is supported on the bearing bracket 2, and interference between the cab and the driving bracket 1 is prevented.

[0051] On the other hand, a plurality of rollers 31 are provided, and the plurality of rollers 31 are arranged at intervals along the circumference of the driving bracket 1. In this embodiment, the plurality of rollers 31 are arranged along the circumference of the driving bracket 1, so that roller support can be provided for the relative movement between the driving bracket 1 and the bearing bracket 2 in different directions of the circumference, thereby improving the support stability of the rolling support structure.

[0052] Similarly, there are multiple rollers, and the multiple rollers 31 are arranged at intervals along the first direction. In this embodiment, the multiple rollers 31 are arranged along a straight line, which can continuously provide rolling support in the first direction when the supporting bracket 2 moves, so as to facilitate the movement of the supporting bracket 2.

[0053] It should be noted that, of the two technical features related to the arrangement of the above-mentioned multiple rollers, one may be selected and the other may exist at the same time, and no specific restriction is made here; in the specific embodiment provided by the utility model, multiple rollers 31 are arranged at intervals along the circumference of the driving bracket 1 to form an annular support group, and there are multiple annular support groups, and the multiple annular support groups are arranged at intervals along the first direction, and the multiple annular support groups are arranged at different length positions of the driving bracket 1, so as to improve the bearing effect of the rolling bearing structure.

[0054] On the other hand, the cab mounting frame 100 further includes a first linear drive device 51, which includes a first fixed end and a first movable end that can move linearly relative to each other, one of which is connected to the driving bracket 1, and the other is connected to the load-bearing bracket 2. In this embodiment, the cab mounting frame 100 further includes a first linear drive device 51 to facilitate driving the load-bearing bracket 2 to move.

[0055] It should be noted that, in the present embodiment, the first linear drive device 51 is disposed in the sliding channel so as to save installation space and protect the first linear drive device 51 at the same time.

[0056] Further, the first fixed end is hingedly mounted on one of the driving bracket 1 and the bearing bracket 2, and the first movable end is hingedly mounted on the other of the driving bracket 1 and the bearing bracket 2. In this embodiment, both ends of the first linear drive device are hingedly mounted on the driving bracket 1 and the bearing bracket 2, ensuring that when the cab is in translational motion, the first linear drive device 51 can generate a certain degree of rotation without causing jamming.

[0057] It should be noted that the first linear drive device 51 has various implementations, such as a cylinder, a linear motor, etc. In this embodiment, the first linear drive device 51 is a hydraulic cylinder.

[0058] On the other hand, the cab mounting frame 100 also includes a circuit board assembly and a limit switch 4. The limit switch 4 includes an action portion and a contact portion. The circuit board assembly is electrically connected to the first linear drive device and the contact portion. The action portion is provided on one of the driving bracket 1 and the load-bearing bracket 2, and the contact portion is provided on the other of the driving bracket 1 and the load-bearing bracket 2. After the action portion touches the contact portion, the contact portion disconnects the access circuit. In this embodiment, the action portion and the contact portion are respectively provided on the driving bracket 1 and the load-bearing bracket 2. When the driving bracket 1 and the load-bearing bracket 2 generate relative movement, once the action portion touches the contact portion, the contact portion disconnects the access circuit, so that the first linear drive device stops working, thereby avoiding continued movement between the driving bracket 1 and the load-bearing bracket 2, thereby ensuring the safety of the driving bracket 1 and the load-bearing bracket 2. At the same time, it can also avoid excessive movement of the first linear drive device, save energy, and increase life.

[0059] See also Figure 4 On the other hand, the load-bearing bracket 2 includes a mounting bracket 21 and a load-bearing bracket 22; the mounting bracket 21 is movably mounted on the driving bracket 1 along the first direction; the load-bearing bracket 22 is rotatably mounted on the mounting bracket 21 around an axis extending in the first direction, and the load-bearing bracket 22 is used to carry the cab. In this embodiment, the mounting bracket 21 is movably mounted on the driving bracket 1, which can drive the entire load-bearing bracket 2 to move in the first direction to achieve width adjustment. At the same time, the mounting bracket 21 and the load-bearing bracket 22 are rotatably connected, and the angle of the load-bearing bracket 22 relative to the mounting bracket 21 can also be adjusted, thereby achieving the adjustment of the width position and pitch angle of the cab on the load-bearing bracket 22, which is convenient for the use of the cab.

[0060] Furthermore, the cab mounting frame 100 further includes a second linear drive device 5, which includes a second fixed end and a second movable end that can move linearly relative to each other, one of which is connected to the mounting bracket 21, and the other is connected to the load-bearing bracket 22. In this embodiment, the load-bearing bracket 22 is driven to rotate around the hinge point by the linear drive device. Compared with the motor, the driving force brought by the linear drive is greater, which is convenient for driving the load-bearing bracket 22 to rotate. At the same time, it can be fixed for a long time at a certain angle position, which is convenient for the use of the cab mounting frame 100.

[0061] It should be noted that, in this embodiment, the second fixed end is mounted on the mounting bracket 21, and the second movable end is mounted on the load-bearing bracket 22. In this embodiment, the second fixed end of the second linear drive device 5 is mounted on the mounting bracket 21, which is convenient for the routing of the pipelines in the cab mounting frame 100. When wiring, the wiring can be directly connected to the mounting bracket 21, and the control of the first linear drive device and the second linear drive device 5 can be realized at the same time. At the same time, it can also avoid the problem of pulling the line on the fixed end due to the displacement of the fixed end following the load-bearing bracket 22.

[0062] See also Figure 5 Based on the above-mentioned cab mounting frame 100, the utility model also provides an engineering machinery 1000, which includes the above-mentioned cab mounting frame 100, that is, it has all the technical features of the above-mentioned cab mounting frame 100, and therefore, it also has the technical effects brought by all the above-mentioned technical features, which will not be described one by one here.

[0063] The engineering machine 1000 further includes an engineering machine platform 200 ; wherein the driving bracket 1 is installed on the engineering machine platform 200 .

[0064] In the engineering machinery 1000 provided by the utility model, the driving bracket 1 is installed on the engineering machinery platform 200, the supporting bracket 2 is movably installed on the driving bracket 1, and the cab is installed on the supporting bracket 2. By moving the supporting bracket 2, the overall size of the engineering machinery can be changed to facilitate road transportation. The driving bracket 1 and the supporting bracket 2 are supported by rollers 31. When the driving bracket 1 and the supporting bracket 2 move relative to each other, the rollers 31 generate rolling friction to reduce the friction coefficient, thereby realizing the smooth movement of the entire cab and ensuring the smooth adjustment between the engineering machinery platform 200 and the cab mounting frame 100.

[0065] See also Figure 6Further, the cab mounting frame 100 also includes a first linear drive device and / or a second linear drive device 5, at least one of the first linear drive device and the second linear drive device 5 includes a hydraulic cylinder; the engineering machinery 1000 also includes a hydraulic drive system, the hydraulic drive system includes: an oil tank 6, a hydraulic pump 7 and a reversing valve 8; the pump inlet of the hydraulic pump 7 is connected to the oil tank 6; the reversing valve 8 is formed with a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, the first connecting port is connected to the pump outlet of the hydraulic pump 7, the second connecting port is connected to the oil tank 6, the third connecting port is connected to the rod chamber of the hydraulic cylinder, and the fourth connecting port is connected to the rodless chamber of the hydraulic cylinder, and the reversing valve 8 can switch the first connecting port to be connected to one of the third connecting port and the fourth connecting port, and correspondingly, the second connecting port is connected to the other of the third connecting port and the fourth connecting port. In this embodiment, the hydraulic cylinder is controlled to work through the hydraulic pump 7 and the reversing valve 8 to realize the linear drive of the hydraulic cylinder, and the structure is simple and reliable.

[0066] Furthermore, the hydraulic drive system further includes a relief valve 9, which is disposed between the pump outlet of the hydraulic pump 7 and the oil tank 6. In this embodiment, the oil pressure entering the reversing valve 8 is controlled by the relief valve 9 to avoid damage to the hydraulic cylinder due to overpressure.

[0067] In addition, a first one-way shutoff valve is provided on the oil path between the third communication port and the rod chamber of the hydraulic oil cylinder. In this embodiment, one-way flow control of the oil in and out of the rod chamber of the hydraulic oil cylinder is achieved.

[0068] Similarly, a second one-way shutoff valve is also provided on the oil path between the fourth communication port and the rodless chamber of the hydraulic oil cylinder. In this embodiment, one-way flow control of the oil in and out of the rodless chamber of the hydraulic oil cylinder is achieved.

[0069] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cab mounting bracket, characterized in that: include: A driving bracket is extended along a first direction, and the driving bracket is used to be installed on an engineering machinery platform; A bearing bracket, movably mounted on the driving bracket along the first direction, the bearing bracket being used to bear the driving cab; as well as, The rolling bearing structure comprises a roller, wherein the roller is fixedly mounted on one of the driving bracket and the bearing bracket and rollingly abuts against the other of the driving bracket and the bearing bracket.

2. The cab mounting bracket according to claim 1, characterized in that: One of the bearing bracket and the driving bracket is at least partially hollow so as to be sleeved on the other.

3. The cab mounting bracket according to claim 2, characterized in that: The bearing bracket is formed with a sliding channel extending along the first direction; The driving bracket at least partially moves linearly in the sliding channel.

4. The cab mounting bracket according to claim 1, characterized in that: The rollers are provided in plurality, and the plurality of rollers are arranged at intervals along the circumference of the driving bracket; and / or, A plurality of rollers are provided, and the plurality of rollers are arranged at intervals along the first direction.

5. The cab mounting bracket according to claim 1, characterized in that: The cab mounting frame also includes a first linear drive device, which includes a first fixed end and a first movable end that can move linearly relative to each other, one of the first fixed end and the first movable end is connected to the drive bracket, and the other is connected to the bearing bracket.

6. The cab mounting bracket according to claim 5, characterized in that: The cab mounting frame further includes a circuit board assembly and a limit switch, wherein the limit switch includes an action portion and a contact portion, and the circuit board assembly is electrically connected to the first linear drive device and the contact portion; The action part is arranged on one of the driving bracket and the carrying bracket, and the contact part is arranged on the other of the driving bracket and the carrying bracket. After the action part touches the contact part, the contact part disconnects the access circuit.

7. The cab mounting bracket according to claim 1, characterized in that: The bearing bracket comprises: A mounting bracket is movably mounted on the driving bracket along the first direction; and The load-bearing bracket is rotatably mounted on the mounting bracket around an axis extending in the first direction, and the load-bearing bracket is used to bear the cab.

8. The cab mounting bracket according to claim 7, characterized in that: The cab mounting frame also includes a second linear drive device, which includes a second fixed end and a second movable end that can move linearly relative to each other, one of the second fixed end and the second movable end is connected to the mounting bracket, and the other is connected to the supporting bracket.

9. An engineering machine, characterized in that: include: Engineering machinery platform; A cab mounting frame, comprising the cab mounting frame according to any one of claims 1 to 8, wherein the drive bracket is mounted on the engineering machinery platform.

10. The construction machine according to claim 9, characterized in that: The cab mounting frame further comprises a first linear drive device and / or a second linear drive device, and at least one of the first linear drive device and the second linear drive device comprises a hydraulic cylinder; The engineering machinery further comprises a hydraulic drive system, and the hydraulic drive system comprises: tank; a hydraulic pump, wherein the pump inlet is connected to the oil tank; and A reversing valve is formed with a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, wherein the first connecting port is connected to the pump outlet of the hydraulic pump, the second connecting port is connected to the oil tank, the third connecting port is connected to the rod chamber of the hydraulic cylinder, and the fourth connecting port is connected to the rodless chamber of the hydraulic cylinder. The reversing valve can switch the first connecting port to be connected to one of the third connecting port and the fourth connecting port, and correspondingly, the second connecting port is connected to the other of the third connecting port and the fourth connecting port.

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