Transfer device

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a transfer device. The transfer device comprises a frame body; the driving shaft and the driven shaft are rotationally installed at the bottom of the frame body, wheels are arranged at the two ends of the driving shaft and the two ends of the driven shaft respectively, and the driving shaft can rotate around the height direction of the frame body relative to the frame body; the power unit is in transmission connection with the driving shaft, the power unit can be connected with a power system of the engineering machinery, and the power unit is configured to drive the driving shaft to rotate; and the traction bracket is connected with the driving shaft, and the traction bracket is configured to be connected with a movable part of the engineering machinery or a traction vehicle. When short-distance transfer needs to be conducted on the engineering machinery, a power system of the engineering machinery can provide power for the power unit, the transmission efficiency is high, a traction vehicle or a movable part of the engineering machinery can be connected with the traction support to drive the driving shaft to rotate, and steering of the transfer device is achieved. And the transfer device does not deviate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, and in particular to a transfer device. BACKGROUND

[0002] At present, when the excavator changes the construction site, in order to avoid the damage of the track of the excavator to the road, the rubber track or the flatbed truck needs to be replaced for transfer. However, the replacement of the rubber track is complicated and has a short service life, and the use of the flatbed truck requires a lot of maintenance costs.

[0003] At present, one way is to transfer the excavator by a transfer device. The transfer device includes a frame, a driving roller, a driven roller, a wheel and a fixing assembly. The excavator is carried by the frame, the driving roller and the driven roller are respectively rotatably installed on the frame, and the end of the driving roller is provided with the wheel. The track of the excavator is placed on the driving roller and the driven roller, and the track of the excavator drives the driving roller and the driven roller to rotate by friction when moving, and in turn drives the wheel to rotate, so as to realize the movement of the transfer device.

[0004] However, the transmission efficiency between the excavator and the transfer device is low, and the transfer device is prone to deviation. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the present application provides a transfer device to solve the problem of low transmission efficiency between the excavator and the transfer device in the related art.

[0006] The present application provides a transfer device, comprising:

[0007] a frame;

[0008] a driving shaft and a driven shaft, which are rotatably installed at the bottom of the frame, the two ends of the driving shaft and the two ends of the driven shaft are respectively provided with wheels, and the driving shaft can rotate relative to the frame in the height direction of the frame;

[0009] a power unit, which is in transmission connection with the driving shaft, the power unit can be connected to the power system of the engineering machinery, and the power unit is configured to drive the driving shaft to rotate;

[0010] a traction bracket, which is connected with the driving shaft, and the traction bracket is configured to connect the movable component of the engineering machinery or a towing vehicle.

[0011] In one possible implementation, the transfer device further comprises a steering bearing, the steering bearing comprises an inner ring and an outer ring in rotational connection, one of the inner ring and the outer ring is fixedly connected with the bottom surface of the frame, and the other of the inner ring and the outer ring is rotatably connected with the driving shaft.

[0012] In a possible implementation, the transfer device further comprises a first damping suspension and a second damping suspension, the first damping suspension is installed below the other one of the inner ring and the outer ring, the driving shaft is rotatably installed on the first damping suspension, and the traction support is connected with the first damping suspension.

[0013] The second damping suspension is installed below the frame body, and the driven shaft is rotatably installed on the second damping suspension.

[0014] In a possible implementation, the transfer device further comprises a clutch brake connected between the driving shaft and the power unit.

[0015] In a possible implementation, a support frame is installed on the first damping suspension, the support frame is located below the frame body, and the power unit and the clutch brake are respectively installed on the support frame.

[0016] In a possible implementation, the traction support comprises a first connecting section and a second connecting section, one end of the first connecting section is connected with the driving shaft, and the other end of the first connecting section is hingedly connected with one end of the second connecting section.

[0017] In a possible implementation, the second connecting section is provided with a connecting portion at an end away from the first connecting section, and the connecting portion is configured to be connected with a movable component of the engineering machine or a towing vehicle.

[0018] In a possible implementation, the transfer device further comprises a limiting assembly configured to be connected with the engineering machine to limit the engineering machine on the frame body.

[0019] In a possible implementation, the limiting assembly comprises a plurality of fixed rope hooks, one end of each fixed rope hook is connected with the frame body, and the other end of each fixed rope hook is configured to be connected with the engineering machine.

[0020] In a possible implementation, the transfer device further comprises a power source installed on the frame body, and the power unit is further connectable with the power source.

[0021] The transport device provided by the application comprises a frame body, a driving shaft, a driven shaft, a power unit and a traction support. The driving shaft and the driven shaft are rotatably installed at the bottom of the frame body, and the two ends of the driving shaft and the two ends of the driven shaft are respectively provided with wheels. The power unit is in transmission connection with the driving shaft, and the power unit can be connected with the power system of the engineering machinery. The engineering machinery can be placed on the frame body. The driving shaft can be driven to rotate by the power unit. When the driving shaft rotates, the transport device can be driven to move, and the steering of the transport device can be realized by the rotation of the driving shaft. The traction support is connected with the driving shaft, and the traction support can drive the driving shaft to rotate. When the engineering machinery needs to be transported for a short distance, the power unit can be powered by the power system of the engineering machinery, and the transmission efficiency is high. The movable part of the engineering machinery is connected with the traction support to realize the steering of the transport device. When the engineering machinery needs to be transported for a long distance, the traction support can be connected with a towing vehicle, and the towing of the towing vehicle can be directly realized. In this way, the phenomenon of deviation of the transport device can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 A structural schematic view of a transport device provided by an embodiment of the present application;

[0024] Figure 2 A structural schematic view of another transport device provided by an embodiment of the present application.

[0025] Explanation of reference signs:

[0026] 100-frame body;

[0027] 210-driving shaft; 220-driven shaft; 230-wheel;

[0028] 300-power unit;

[0029] 400-traction support; 410-first connecting section; 420-second connecting section; 421-connection part;

[0030] 500-steering bearing;

[0031] 610-first damping suspension; 620-second damping suspension;

[0032] 700-clutch brake;

[0033] 800-fixed rope hook;

[0034] 900 - power source. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the preferred embodiments of the present application and the accompanying drawings to further specifically describe the technical solutions in the embodiments of the present application. In the drawings, identical or similar reference numerals refer to identical or similar components throughout. The described embodiments are part of the present application, but not all the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, but cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0036] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, it can be a fixed connection, or an indirect connection through an intermediate medium, or an internal communication of two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] The terms "first", "second", "third" (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0039] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or display that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or displays.

[0040] In the prior art, the transfer device comprises a frame, a driving roller, a driven roller, a wheel and a fixing assembly. The excavator is carried by the frame, the driving roller and the driven roller are respectively rotatably installed on the frame, and the end of the driving roller is provided with the wheel. The track of the excavator is arranged on the driving roller and the driven roller, and the track of the excavator drives the driving roller and the driven roller to rotate through friction when moving, and then drives the wheel to rotate, so as to realize the movement of the transfer device. However, the transmission efficiency between the excavator and the transfer device is low, and the transfer device is prone to deviation. Moreover, the existing transfer device drives the wheels on both sides to generate a speed difference for steering through different rotating speeds or rotating directions of the excavator track, which has poor controllability, large turning radius and large wheel wear.

[0041] After repeated thinking and verification, the inventor found that if a power unit is installed on the frame of the transfer device, the power system of the engineering machinery such as the excavator can directly provide power for the power unit, and the driving shaft is driven by the power unit to rotate to realize the movement of the transfer device. The driving shaft can rotate relative to the height direction of the frame, and the driving shaft is connected with the traction support, and the traction support can be connected with the movable part of the engineering machinery or the traction vehicle, so that the movable part of the engineering machinery or the traction vehicle can directly drive the transfer device to turn. The transmission efficiency of the transfer device is high, and the "deviation" does not occur, which meets the short-distance and long-distance transfer requirements.

[0042] Therefore, the inventor designs a transfer device, which can drive the driving shaft to rotate through the power unit, and the power of the power unit can be provided by the power system of the engineering machinery. The driving shaft can rotate relative to the frame to realize the steering of the transfer device, and the traction support is connected with the driving shaft, and the movable part of the engineering machinery or the traction vehicle is directly connected with the traction support, so that the driving shaft can be driven to rotate. The transmission efficiency of the transfer device is high, and the "deviation" does not occur, which meets the short-distance and long-distance transfer requirements.

[0043] The technical scheme of the transfer device provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0044] Referring to Figure 1 and Figure 2 , the transfer device provided by the embodiments of the present application comprises a frame 100, a driving shaft 210, a driven shaft 220, a power unit 300 and a traction support 400. The frame 100 is configured to carry the engineering machinery, that is, the engineering machinery can be placed on the frame 100. Illustratively, the frame 100 can be formed as a platform, which is a rectangular frame structure composed of high-strength steel materials, and a layer of anti-skid steel plate is welded on the surface of the rectangular frame structure. The engineering machinery such as the excavator can be moved to the frame 100, and the engineering machinery is supported by the frame 100.

[0045] The driving shaft 210 and the driven shaft 220 are rotatably installed at the bottom of the frame 100, both ends of the driving shaft 210 and both ends of the driven shaft 220 are provided with wheels 230, and the driving shaft 210 can rotate relative to the frame 100 in the height direction of the frame 100. Illustratively, Figure 1 and Figure 2 The direction indicated by the X-axis is the width direction of the frame 100, the direction indicated by the Y-axis is the length direction of the frame 100, and the height direction of the frame 100 is perpendicular to the direction indicated by the X-axis and the direction indicated by the Y-axis. Among them, the driving shaft 210 can be arranged at the front side of the frame 100, and the driven shaft 220 can be arranged at the rear side of the frame 100. When the driving shaft 210 rotates to drive the transfer device to move, the driven shaft 220 rotates with it. When the driving shaft 210 rotates relative to the frame 100, the steering of the transfer device can be realized.

[0046] The power unit 300 is in transmission connection with the driving shaft 210, the power unit 300 can be connected to the power system of the engineering machinery, and the power unit 300 is configured to drive the driving shaft 210 to rotate. Illustratively, a hydraulic motor or an electric motor can be used as the power unit 300. The power unit 300 can drive the driving shaft 210 to rotate through a transmission structure, and the specific transmission structure is well known to those skilled in the art and is not uniquely limited here. When the power unit 300 is a hydraulic motor, the hydraulic motor can be connected to the hydraulic system of the engineering machinery; when the power unit 300 is an electric motor, the electric motor can be connected to the power system of the engineering machinery. The above-mentioned hydraulic system and power system are both power systems of the engineering machinery.

[0047] Those skilled in the art can understand that, compared with the existing way of driving the driving roller and the driven roller to rotate by relying on the friction force of the track of the engineering machinery, the present embodiment provides a transfer device with high transmission efficiency and no wear on the track of the engineering machinery.

[0048] The traction bracket 400 is connected with the driving shaft 210, and the traction bracket 400 is configured to connect the movable part of the engineering machinery or a towing vehicle. Specifically, the driving shaft 210 can rotate relative to the traction bracket 400. When short-distance transfer of the engineering machinery is needed, the traction bracket 400 can be connected to the movable part of the engineering machinery, such as the bucket of the excavator; when long-distance transfer of the engineering machinery is needed, the traction bracket 400 can be connected to an external towing vehicle. The movable part of the engineering machinery or the towing vehicle can drive the driving shaft 210 to rotate relative to the frame 100 through the traction bracket 400 to realize the steering of the transfer device.

[0049] The transport device provided by the embodiment comprises a frame body 100, a driving shaft 210, a driven shaft 220, a power unit 300 and a traction bracket 400. The driving shaft 210 and the driven shaft 220 are rotatably installed at the bottom of the frame body 100 respectively, and the two ends of the driving shaft 210 and the two ends of the driven shaft 220 are respectively provided with wheels 230. The power unit 300 is in transmission connection with the driving shaft 210, and the power unit 300 can be connected with the power system of the engineering machinery. The engineering machinery can be placed on the frame body 100. The driving shaft 210 can be driven to rotate by the power unit 300. When the driving shaft 210 rotates, the transport device can be driven to move, and the steering of the transport device can be realized by the rotation of the driving shaft 210. The traction bracket 400 is connected with the driving shaft 210, and the traction bracket 400 can drive the driving shaft 210 to rotate. When the engineering machinery needs to be transported for a short distance, the power system of the engineering machinery can be used to provide power for the power unit 300, and the transmission efficiency is high. The movable part of the engineering machinery is connected with the traction bracket 400 to realize the steering of the transport device. When the engineering machinery needs to be transported for a long distance, the traction bracket 400 can be connected with a towing vehicle, and the steering can be realized directly by the traction of the towing vehicle. In this way, the phenomenon of deviation of the transport device can be avoided.

[0050] The existing transport device drives the wheels on both sides of the transport device to produce a speed difference by the different rotating speeds or rotating directions of the tracks of the engineering machinery, so as to realize steering. The controllability is poor, the turning radius is large, and the wear of the wheels is large. The transport device provided by the embodiment drives the driving shaft 210 to rotate directly by the movable part of the engineering machinery or the towing vehicle through the traction bracket 400 to realize steering. The steering controllability of the transport device is high, and the wear of the wheels 230 is small. In addition, the engineering machinery does not affect the rotation of the driving shaft 210, and the towing vehicle can be directly used to tow the transport device. When the engineering machinery is transported for a long distance, the engineering machinery does not need to drive the transport device, which reduces the energy consumption of the engineering machinery and the wear of the transport device, and the economy of the transport device is high.

[0051] In one embodiment, as shown in Figure 1 and Figure 2 The transport device further comprises a steering bearing 500, the steering bearing 500 comprises a rotatingly connected inner ring and an outer ring, one of the inner ring and the outer ring is fixedly connected with the bottom surface of the frame body 100, and the other of the inner ring and the outer ring is rotatably connected with the driving shaft 210.

[0052] The turning bearing 500 can be located at the center of the rack body 100 in the width direction of the rack body 100. The axis of the turning bearing 500 is parallel to the height direction of the rack body 100. The outer ring of the turning bearing 500 is sleeved outside the inner ring, and the outer ring can rotate relative to the inner ring. In one possible implementation, the top end of the outer ring is fixedly connected to the bottom surface of the rack body 100, and the bottom end of the inner ring is rotationally connected to the driving shaft 210. In another possible implementation, the top end of the inner ring is fixedly connected to the bottom surface of the rack body 100, and the bottom end of the outer ring is rotationally connected to the driving shaft 210.

[0053] The driving shaft 210 can rotate around the axis of the turning bearing 500 through the turning bearing 500, so as to rotate the driving shaft 210 relative to the rack body 100 around the height direction of the rack body 100. The turning of the transfer device is easier, and the direction adjustment accuracy of the transfer device is higher.

[0054] In one specific embodiment, as shown in Figure 1 and Figure 2 The transfer device further includes a first damping suspension 610 and a second damping suspension 620. The first damping suspension 610 is installed below the other one of the inner ring and the outer ring, the driving shaft 210 is rotationally installed on the first damping suspension 610, and the traction support 400 is connected to the first damping suspension 610. Specifically, the first damping suspension 610 is installed below the one of the inner ring and the outer ring that is not connected to the rack body 100, and the first damping suspension 610 can be connected to the inner ring or the outer ring by fastening or welding. The driving shaft 210 is installed on the first damping suspension 610 and can rotate relative to the first damping suspension 610. The traction support 400 can drive the first damping suspension 610 to rotate relative to the rack body 100, and in turn drive the driving shaft 210 to rotate relative to the rack body 100. In other embodiments, the traction support 400 can also be connected to the one of the inner ring and the outer ring that is not connected to the rack body 100.

[0055] The second damping suspension 620 is installed below the rack body 100, and the driven shaft 220 is rotationally installed on the second damping suspension 620. For example, the number of the second damping suspensions 620 can be two, which are respectively located at positions close to the two ends of the driven shaft 220.

[0056] The specific structures of the first damping suspension 610 and the second damping suspension 620 are not limited in this embodiment, and a person skilled in the art can set them according to needs.

[0057] By setting the first damping suspension 610 and the second damping suspension 620, the vibration damage of the engineering machinery caused by the uneven road surface during the transfer process can be reduced, and the stability and safety of the transfer process can be improved.

[0058] Optionally, the wheels 230 at both ends of the drive shaft 210 and the wheels 230 at both ends of the driven shaft 220 can use rubber tires respectively, so as to further reduce the vibration damage of the engineering machinery caused by the road surface unevenness during the transfer process.

[0059] In a more specific embodiment, as shown in Figure 1 and Figure 2 The transfer device further comprises a clutch brake 700 connected between the drive shaft 210 and the power unit 300.

[0060] The clutch brake 700 has the functions of clutching and braking at the same time, and the input end is connected to the power unit 300, and the output end can be connected to the drive shaft 210 through a transmission structure. The clutch brake 700 of the transfer device can be a manual clutch brake.

[0061] By setting the clutch brake 700, three connection states of the drive shaft 210 can be switched. State 1 is that the drive shaft 210 is connected to the power unit 300, which is used for the driving mode of the engineering machinery. State 2 is that the drive shaft 210 is not connected to any part, which is used for the towing mode of the external towing vehicle. State 3 is the locked state of the drive shaft 210, which is used for the parking mode of the transfer device.

[0062] Specifically, when the engineering machinery is moved to the frame 100, the clutch brake 700 can be adjusted to the braking state first, so that the transfer device is switched to the parking gear, and the drive shaft 210 is locked by the clutch brake 700, so as to prevent the movement of the transfer device when the engineering machinery climbs the frame 100.

[0063] When the engineering machinery needs to be transferred for a short distance, the transfer device is switched to the driving gear by the clutch brake 700, and the power system of the engineering machinery is connected to the power unit 300, which provides forward or backward power for the transfer. At the same time, the movable part of the engineering machinery is connected to the traction support 400, and the rotation of the movable part drives the rotation of the drive shaft 210, so as to adjust the running angle of the wheels 230 at both ends of the drive shaft 210, thereby changing the running direction of the transfer device during the transfer process.

[0064] When the engineering machinery needs to be transferred for a long distance, the transfer device is switched to the neutral gear by the clutch brake 700, and the towing vehicle is directly connected to the traction support 400 of the transfer device for transfer.

[0065] In a possible implementation, the first damping suspension 610 is provided with a support frame, and the support frame is located below the frame 100. The power unit 300 and the clutch brake 700 are respectively mounted on the support frame.

[0066] Exemplarily, the support frame can be mounted on the first damping suspension 610 by fastening, and the support frame can be provided with a support platform, and the power unit 300 and the clutch brake 700 can be respectively placed on the support platform and fixed with the support platform.

[0067] By arranging the support frame, the power unit 300 and the clutch brake 700 are respectively arranged below the frame body 100, so that the engineering machinery does not interfere with the power unit 300 or the clutch brake 700 after moving to the frame body 100.

[0068] In one embodiment, as shown in Figure 2 The traction support 400 includes a first connecting section 410 and a second connecting section 420, one end of the first connecting section 410 is connected with the drive shaft 210, and the other end of the first connecting section 410 is hinged with one end of the second connecting section 420.

[0069] Exemplarily, the first connecting section 410 and the second connecting section 420 can be respectively in strip structures, and the end of the first connecting section 410 away from the drive shaft 210 can be hinged with the end of the second connecting section 420 through a rotating shaft. It can be understood that the second connecting section 420 can rotate relative to the first connecting section 410 to realize folding or unfolding of the traction support 400. It is worth mentioning that the end of the second connecting section 420 away from the first connecting section 410 is used to connect a movable part of the engineering machinery or a traction vehicle.

[0070] When the end of the second connecting section 420 away from the first connecting section 410 is used to connect the movable part of the engineering machinery or the storage and transfer device, the second connecting section 420 can be flipped to fold the traction support 400, the length of the traction support 400 extending out of the frame body 100 is shorter, and the space occupied by the traction support 400 is reduced; when the end of the second connecting section 420 away from the first connecting section 410 is used to connect the traction vehicle, the second connecting section 420 can be flipped in the opposite direction to unfold the traction support 400, the length of the traction support 400 extending out of the frame body 100 is longer, and the connection between the traction support 400 and the traction vehicle is facilitated.

[0071] Through the above arrangement, the traction support 400 can be folded or unfolded as needed, so that the transfer device can adapt to more scenes.

[0072] In one specific embodiment, as shown in Figure 2 The end of the second connecting section 420 away from the first connecting section 410 is provided with a connecting part 421, and the connecting part 421 is configured to connect the movable part of the engineering machinery or the traction vehicle.

[0073] The connecting portion 421 is configured to connect the second connecting segment 420 to a movable part of the engineering machine or a towing vehicle. For example, the connecting portion 421 can be in a ring shape and is fixed to the second connecting segment 420 by welding. In other embodiments, the connecting portion 421 can be in other connecting structures to connect the second connecting segment 420 to the movable part of the engineering machine or the towing vehicle.

[0074] In one embodiment, the transfer device further comprises a limiting assembly configured to connect to the engineering machine to limit the engineering machine on the rack 100.

[0075] The limiting assembly can comprise a plurality of limiting members, each of which is installed on the rack 100. When the engineering machine is moved onto the rack 100, the workers can connect each limiting member of the limiting assembly to the engineering machine to limit the engineering machine on the rack 100, so as to prevent the engineering machine from moving on the rack 100 during the transfer process and ensure the stability of the transfer device during the transfer process. In addition, the caterpillar track of the engineering machine does not need to move on the rack 100, and the stability of the transfer device during the transfer process is higher.

[0076] In one specific embodiment, as shown in Figure 1 and Figure 2 The limiting assembly comprises a plurality of fixed rope hooks 800, one end of each fixed rope hook 800 is connected to the rack 100, and the other end of each fixed rope hook 800 is configured to connect to the engineering machine.

[0077] For example, as shown in Figure 1 and Figure 2 Two fixed rope hooks 800 can be arranged at positions close to the front side and positions close to the rear side of the rack 100, respectively. The number and specific positions of the fixed rope hooks 800 in this embodiment are non-limiting, and those skilled in the art can adjust them as needed. Each fixed rope hook 800 can comprise a rope and a hook-shaped portion at one end of the rope, and the end of the rope away from the hook-shaped portion can be fixed to the rack 100. The hook-shaped portion can be hung on the engineering machine to fix the engineering machine on the rack 100.

[0078] The limiting assembly limits the engineering machine through the plurality of fixed rope hooks 800, and the flexibility of the limiting assembly is higher, and meanwhile each fixed rope hook 800 occupies less space.

[0079] In other embodiments, the engineering machine can also be fixed to the rack 100 by using a binding belt or a fixed support, which is not limited herein.

[0080] In one possible implementation, as shown in Figure 2As shown, the transport device further comprises a power source 900, which is mounted on the frame 100, and the power unit 300 is further connectable with the power source 900.

[0081] Illustratively, when the motor is used as the power unit 300, an external battery, a fuel engine or a battery can be used as the power source 900. When the hydraulic motor is used as the power unit 300, the power source 900 can comprise a hydraulic pump and a liquid storage tank, and the liquid in the liquid storage tank is delivered to the hydraulic motor by the hydraulic pump. The power source 900 can be mounted on the bottom of the frame 100, so as to avoid interference between the power source 900 and the engineering machinery.

[0082] With the above structure, the power source 900 can serve as a backup power of the power unit 300, and when the engineering machinery has no power, the power source 900 can provide power for the power unit 300, so that the transport device can reliably transport the engineering machinery.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and 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 present application.

Claims

1. A transfer device, characterized by The utility model relates to a transport device for engineering machinery, comprising: a frame (100); a driving shaft (210) and a driven shaft (220) rotatably mounted at the bottom of the frame (100), both ends of the driving shaft (210) and both ends of the driven shaft (220) are provided with wheels (230), and the driving shaft (210) can rotate relative to the frame (100) around the height direction of the frame (100); a power unit (300) in transmission connection with the driving shaft (210), the power unit (300) can be connected with the power system of engineering machinery, and the power unit (300) is configured to drive the driving shaft (210) to rotate; a traction support (400) connected with the driving shaft (210), the traction support (400) is configured to connect the movable part of engineering machinery or a traction vehicle.

2. The transfer device of claim 1, wherein, The transport device further comprises a steering bearing (500), the steering bearing (500) comprises an inner ring and an outer ring in rotary connection, one of the inner ring and the outer ring is fixedly connected with the bottom surface of the frame (100), and the other of the inner ring and the outer ring is rotatably connected with the driving shaft (210).

3. The transfer device of claim 2, wherein, The transport device further comprises a first damping suspension (610) and a second damping suspension (620), the first damping suspension (610) is installed below the other of the inner ring and the outer ring, the driving shaft (210) is rotatably mounted on the first damping suspension (610), and the traction support (400) is connected with the first damping suspension (610). The second damping suspension (620) is installed below the frame (100), and the driven shaft (220) is rotatably mounted on the second damping suspension (620).

4. The transfer device of claim 3, wherein, The transport device further comprises a clutch brake (700) connected between the driving shaft (210) and the power unit (300).

5. The transfer device of claim 4, wherein, A support frame is mounted on the first damping suspension (610), the support frame is located below the frame (100), and the power unit (300) and the clutch brake (700) are respectively mounted on the support frame.

6. The transfer device of claim 1, wherein, The traction support (400) comprises a first connecting section (410) and a second connecting section (420), one end of the first connecting section (410) is connected with the driving shaft (210), and the other end of the first connecting section (410) is hingedly connected with one end of the second connecting section (420).

7. The transfer device of claim 6, wherein, The second connecting section (420) is provided with a connecting part (421) at the end away from the first connecting section (410), and the connecting part (421) is configured to connect the movable part of engineering machinery or a traction vehicle.

8. The transfer device of claim 1, wherein, The transport device further comprises a limiting assembly configured to be connected with the engineering machinery to limit the engineering machinery on the frame (100).

9. The transfer device of claim 8, wherein, The limiting assembly comprises a plurality of fixed rope hooks (800), one end of each fixed rope hook (800) is connected with the frame (100), and the other end of each fixed rope hook (800) is configured to be connected with the engineering machinery.

10. The transfer device of any one of claims 1-9, wherein, The transport device further comprises a power source (900) mounted on the frame body (100), and the power unit (300) is further connectable with the power source (900).

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