Crawler-type walking mechanism and concrete cutting device

Abstract

The utility model relates to the technical field of crawler chassis, and discloses a crawler type walking mechanism and a concrete cutting device, which comprise a main suspension, a supporting suspension, a driving suspension and a crawler, the supporting suspension comprises a first supporting frame and a second supporting frame, wherein the middles of the first supporting frame and the second supporting frame are hinged to the main suspension, and the first supporting frame and the second supporting frame are connected at the top. The bottom of the first supporting frame is hinged to a third supporting frame and provided with a first limiting structure, and the bottom of the third supporting frame is connected with a first wheel and a second wheel. The bottom of the second supporting frame is hinged to a fourth supporting frame and provided with a second limiting structure, and the bottom of the fourth supporting frame is connected with a third wheel and a fourth wheel; the driving suspension is connected with a driving wheel; and the crawler belt sleeves the outer sides of the first wheel, the second wheel, the third wheel, the fourth wheel and the driving wheel. Self-adaptive adjustment of different degrees can be carried out according to the sizes of particles, attachment of the crawler belt is kept all the time, the crawler belt is prevented from falling off, therefore, interference of the particles is effectively dealt with, and stable walking of the cutting machine is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of track chassis, especially to a track type walking mechanism and concrete cutting device. BACKGROUND

[0002] In the field of modern building construction, concrete cutting machines have become an important equipment indispensable for realizing efficient and accurate operation. The equipment is widely used in the demolition and reconstruction of concrete structures in road, bridge, building and other engineering, and its operation performance is directly related to the engineering progress and construction quality. However, concrete cutting operation faces a series of complex and variable challenges, especially under different road conditions, the difference in the configuration of the cutting machine directly leads to the change of cutting distance and cutting depth, which puts higher requirements on the adaptability and flexibility of the equipment.

[0003] The concrete cutting processing technology itself has high complexity, not only requires accurate cutting precision, but also needs to cope with the problems of mechanical wear and personnel fatigue caused by long-time continuous operation. In order to ensure the efficient progress of cutting operation, the operator often needs to maintain uninterrupted working state, which poses a severe test to the physical and endurance of the operator, and also increases the safety hazards in the operation process.

[0004] More importantly, a large amount of particulate matter will be generated during the concrete cutting operation, which not only pollutes the environment, but also may cause serious interference to the walking system of the cutting machine. The accumulation of particulate matter may cause the cutting machine to walk unstably, and even cause the track to fall off and other faults, thereby changing the preset cutting path, affecting the cutting precision and operation efficiency. Such problems are particularly prominent under complex and variable road conditions, and have become a major bottleneck restricting the quality and progress of concrete cutting operation.

[0005] Therefore, how to effectively filter the influence of particulate matter on the walking system of the cutting machine while ensuring the cutting efficiency and quality, and ensure that the cutting machine can walk stably under various road conditions, has become a technical problem to be solved. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a track type walking mechanism and concrete cutting device to solve the problems in the prior art, by setting the support suspension, different degrees of self-adaptive adjustment can be made according to the size of the particulate matter, the track is always kept in close contact, and the track is prevented from falling off, so that the interference of the particulate matter is effectively coped with, and the cutting machine is kept from walking stably.

[0007] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0008] The utility model provides a caterpillar walking mechanism, including main suspension, support suspension, drive suspension and caterpillar, the main suspension is used for connecting in the vehicle body, the support suspension includes the first support frame and the second support frame of the middle part articulation in the main suspension, the first support frame and the second support frame are connected in the top, the bottom of first support frame is articulated with the third support frame and is provided with the first limit structure of the third support frame swing amplitude limitation, the bottom of third support frame is connected with first wheel and second wheel, the bottom of second support frame is articulated with the fourth support frame and is provided with the second limit structure of the fourth support frame swing amplitude limitation, the bottom of fourth support frame is connected with third wheel and fourth wheel, the drive suspension is connected with drive wheel, the caterpillar is set in the outside of first wheel, second wheel, third wheel, fourth wheel and drive wheel.

[0009] In an embodiment, the support suspension further comprises a first shock-absorbing spring, a first end of the first shock-absorbing spring is connected to the first support frame, and a second end of the first shock-absorbing spring is connected to the second support frame.

[0010] In an embodiment, a tensioning suspension is further included, the tensioning suspension is connected with a tensioning wheel, and the tensioning wheel is set on the inner side of the caterpillar.

[0011] In an embodiment, the tensioning suspension comprises a first tensioning frame articulated to the main suspension and a second tensioning frame fixedly connected to the main suspension, the first tensioning frame is connected with a first tensioning wheel and a second tensioning wheel, and the second tensioning frame is connected with a third tensioning wheel.

[0012] In an embodiment, the tensioning suspension further comprises a second shock-absorbing spring, a first end of the second shock-absorbing spring is connected to the main suspension, and a second end of the second shock-absorbing spring is connected to the first tensioning frame.

[0013] In an embodiment, the drive suspension comprises a drive frame and a third shock-absorbing spring, the drive frame is articulated to the main suspension, the drive wheel comprises a driving wheel and a driven wheel, a first end of the third shock-absorbing spring is connected to the vehicle body or the main suspension, and a second end of the third shock-absorbing spring is connected to the drive frame.

[0014] The utility model provides a concrete cutting device, including vehicle body and install in the vehicle body's like the caterpillar walking mechanism of preceding record, drive wheel is connected with drive mechanism, still include the cutting machine of install in the vehicle body.

[0015] In an embodiment, a balance fixing mechanism is further included, the balance fixing mechanism includes a left-right balance assembly and a front-rear balance assembly, a fixed part of the left-right balance assembly is connected to the vehicle body, a movable part of the left-right balance assembly is connected to a fixed part of the front-rear balance assembly, and a movable part of the front-rear balance assembly is connected to the cutting machine.

[0016] In an embodiment, the balance fixing mechanism further includes an auxiliary support mechanism, the auxiliary support mechanism is connected to the fixed part of the front-rear balance assembly, and the auxiliary support mechanism is used for close support on the vehicle body.

[0017] In an embodiment, a sensing device is further included, the sensing device is used for detecting the inclination angle of the vehicle body and the angle of the cutting machine.

[0018] The utility model discloses relative to prior art has obtained following technical effect:

[0019] The support suspension of the utility model has the first level support mechanism formed by first support frame and second support frame, still has the second level support mechanism combined by third support frame and fourth support frame, when passing through smaller particulate matter, the second level support mechanism can play the role and keep the close of track, when passing through larger particulate matter, the movable range of second level support mechanism is exceeded, at this moment, under the action of first limit structure and second limit structure, first level support mechanism can play the role and keep the close of track, thereby, through the setting of support suspension, can carry out the self -adaptation adjustment of different degree according to the size of particulate matter, always keeps the close of track, avoids the track to fall off, thereby effectively cope with particulate matter interference, keep cutting machine stable walking. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiments, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0021] Figure 1 It is the concrete cutting device schematic view in the embodiment of the utility model;

[0022] Figure 2 It is the drive mechanism schematic view of concrete cutting device in the embodiment of the utility model;

[0023] Figure 3 It is the vehicle body internal structure schematic view in the embodiment of the utility model;

[0024] Figure 4 It is the track type walking mechanism schematic view in the embodiment of the utility model;

[0025] Figure 5 It is the support suspension schematic view in the embodiment of the utility model;

[0026] Figure 6 It is the balance fixing mechanism schematic view in the embodiment of the utility model;

[0027] 1, vehicle body;2, track type walking mechanism;3, cutting machine;4, balance fixing mechanism;5, induction device;6, control panel;10, first support shaft;20, second support shaft;

[0028] 11, left motor;12, left driver;13, right driver;14, right motor;15, air inlet;16, controller device placement area;17, power converter;18, air outlet;19, cooling fan;

[0029] 21, main suspension;22, support suspension;221, first support frame;222, second support frame;223, third support frame;2231, first wheel;2232, second wheel;2233, first limiting structure;224, fourth support frame;225, first damping spring;2241, third wheel;2242, fourth wheel;2243, second limiting structure;231, first tensioning frame;2311, first tensioning wheel;2312, second tensioning wheel;232, second tensioning frame;2321, third tensioning wheel;233, second damping spring;241, driving wheel;242, driven wheel;243, driving frame;244, third damping spring;245, chain;25, track;

[0030] 41, left and right servo motors;42, left and right speed reducers;43, front and rear servo motors;44, front and rear speed reducers;45, auxiliary support mechanism;

[0031] 61, emergency stop switch;62, running button;63, touch screen. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] The purpose of this invention is to provide a tracked walking mechanism and a concrete cutting device to solve the problems existing in the prior art. By setting up a support suspension, it can make different degrees of adaptive adjustment according to the size of the particles, always keep the track in contact, and avoid the track falling off, thereby effectively dealing with particle interference and keeping the cutting machine moving stably.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1-6 As shown, this utility model provides a tracked walking mechanism, which is installed on a vehicle body 1 to support the vehicle body 1 and its accessories for movement, enabling it to move to different positions to meet work requirements. The tracked walking mechanism 2 includes a main suspension 21, a support suspension 22, a drive suspension, and tracks 25. The main suspension 21 is connected to the vehicle body 1 via at least two support axles, for example, using... Figure 4 The first support shaft 10 and the second support shaft 20 shown ensure the stability of the connection between the tracked walking mechanism 2 and the vehicle body 1. The support suspension 22 includes a first support frame 221 and a second support frame 222 hinged to the main suspension 21 in the middle. Both the first support frame 221 and the second support frame 222 have a V-shaped structure. The apex of the V-shaped structure is hinged together and is hinged to the main suspension 21 through the same hinge axis. The first support frame 221 and the second support frame 222 are connected at the top to transmit force between them. A third support frame 223 is hinged to the bottom of the first support frame 221 and a first limiting structure 2233 is provided to limit the swing amplitude of the third support frame 223. A first wheel 2231 and a second wheel 2232 are connected to the bottom of the third support frame 223. The bottom of the second support frame 222 is hinged to a fourth support frame 224, and a second limiting structure 2243 is provided to limit the swing amplitude of the fourth support frame 224. The bottom of the fourth support frame 224 is connected to a third wheel 2241 and a fourth wheel 2242. The drive suspension is connected to a drive wheel, and the drive suspension can be connected to the vehicle body 1 or to the main suspension 21. The track 25 is fitted on the outside of the first wheel 2231, the second wheel 2232, the third wheel 2241, the fourth wheel 2242 and the drive wheel. For example, the drive wheel drives the track 25 to rotate, and it generates forward power by contacting the ground.

[0036] Assuming the direction of travel is Figure 6When the crawler 25 is pressed to small particles, the first wheel 2231 and the second wheel 2232 form a pair of movable supports through the third support frame 223, and rotate around the hinge shaft of the first support frame 221 and the third support frame 223. When the particles are small, first, the first wheel 2231 is lifted relative to the second wheel 2232, and the second wheel 2232 supports the crawler 25, and then the second wheel 2232 is lifted relative to the first wheel 2231, and the first wheel 2231 supports the crawler 25. When the particles are large, the rotation of the third support frame 223 is limited by the first limiting structure 2233, at this time, the first wheel 2231 continues to lift and drives the first support frame 221 to rotate around the hinge shaft of the first support frame 221 and the second support frame 222, at this time, the first wheel 2231, the second wheel 2232, the third support frame 223 and the first support frame 221 jointly swing, and the force is transmitted to the second support frame 222, and then the second support frame 222, the fourth support frame 224, the third wheel 2241 and the fourth wheel 2242 jointly swing, that is, the third wheel 2241 and the fourth wheel 2242 jointly extrude the crawler 25, so that the crawler 25 is better adhered.

[0037] The support suspension 22 has a first support mechanism formed by the first support frame 221 and the second support frame 222, and also has a second support mechanism combined by the third support frame 223 and the fourth support frame 224. When passing through small particles, the second support mechanism can play a role to keep the crawler 25 adhered, and when passing through large particles, the movable range of the second support mechanism is exceeded, at this time, under the action of the first limiting structure 2233 and the second limiting structure 2243, the first support mechanism can play a role to keep the crawler 25 adhered, so that through the setting of the support suspension 22, different degrees of self-adaptive adjustment can be made according to the size of the particles, the adherence of the crawler 25 is always kept, and the crawler 25 is prevented from falling off, so that the interference of the particles is effectively coped with, and the stable walking of the cutting machine 3 is kept.

[0038] In an embodiment, as shown in Figure 5 The support suspension 22 further includes a first damping spring 225, a first end of the first damping spring 225 is connected to the first support frame 221, and a second end of the first damping spring 225 is connected to the second support frame 222. When the force transmitted between the first support frame 221 and the second support frame 222 is too large, the first damping spring 225 can be contracted. For example, when passing through large particles under the condition of carrying heavy load, in order to avoid damage to the crawler 25 (the crawler 25 is made of rubber material), the first damping spring 225 is compressed to avoid deformation of the crawler 25 due to long-time dragging, which causes the crawler 25 to fall off or brings additional vibration.

[0039] In an embodiment, as shown in Figure 4As shown, the tensioning suspension further comprises a tensioning suspension connected with a tensioning wheel, the tensioning wheel is sleeved on the inner side of the track 25, the tensioning wheel can be provided with a plurality of tensioning wheels, on the one hand, the tensioning wheel supports the track 25 to ensure the normal work of the track 25, on the other hand, the track 25 is kept in a certain shape and is smoothly driven by the driving wheel.

[0040] In an embodiment, as shown in Figure 4 The tensioning suspension comprises a first tensioning frame 231 hinged to the main suspension 21 and a second tensioning frame 232 fixedly connected to the main suspension 21, the hinged position of the first tensioning frame 231 can be the second support shaft 20, the first tensioning frame 231 can be located in front of the track, and the second tensioning frame 232 can be located above; the first tensioning frame 231 is connected with a first tensioning wheel 2311 and a second tensioning wheel 2312, the first tensioning wheel 2311 is located obliquely above, and the second tensioning wheel 2312 is located below and serves as a support, the second tensioning frame 232 is connected with a third tensioning wheel 2321, the third tensioning wheel 2321 supports the top of the track 25, and the plurality of tensioning wheels jointly act to form a certain annular shape of the track 25, facilitating the arrangement of structures on the inner side of the track 25.

[0041] In an embodiment, as shown in Figure 4 The tensioning suspension further comprises a second damping spring 233, a first end of the second damping spring 233 is connected to the main suspension 21, and a second end of the second damping spring 233 is connected to the first tensioning frame 231. The second damping spring 233 can provide a tensioning force of the first tensioning frame 231 to the track 25, and when the first tensioning frame 231 is deflected under force, the second damping spring 233 can be compressed to reduce damage to the track 25.

[0042] In an embodiment, as shown in Figure 2 and Figure 4 The driving suspension comprises a driving frame 243 and a third damping spring 244, the driving frame 243 is hinged to the main suspension 21, and the hinged shaft can be the first support shaft 10, the driving wheel comprises a driving wheel 241 and a driven wheel 242, the driving wheel 241 and the driven wheel 242 are connected by a chain 245, a first end of the third damping spring 244 is connected to the vehicle body 1 or the main suspension 21, and a second end of the third damping spring 244 is connected to the driving frame 243. The third damping spring 244 can push the driven wheel 242 to adhere to the track 25, and keep the track 25 in an adhering state.

[0043] As shown in Figures 1-6As shown, the utility model provides a concrete cutting device, including car body 1 and the track type walking mechanism 2 as described in the preceding of installation in car body 1, the track type walking mechanism 2 can be symmetrically arranged in the both sides of car body 1, drive wheel is connected with drive mechanism, and two groups of drive mechanism drive different side drive wheel rotation respectively, still include the cutting machine 3 of installation in car body 1. Through the action of track type walking mechanism 2, drive car body 1 and cutting machine 3 to move position, realize the cutting demand of different position.

[0044] In an embodiment, as Figure 2 As shown, drive mechanism includes left motor 11 and left driver 12, and left driver 12 controls the operation of left motor 11, and then drives the track 25 walking on the left side, and drive mechanism further includes right motor 14 and right driver 13, and right driver 13 controls the operation of right motor 14, and then drives the track 25 walking on the right side. The setting of drive mechanism can ensure that there is no deflection in the walking process due to the different rotating speeds of the two motors, and at the same time, the setting distance movement or fixed circle walking can be performed in cooperation with the control system. Left motor 11 and right motor 14 can be independently fixed and operated, or can be operated in cooperation with each other.

[0045] A cooling fan 19 can also be provided, which is arranged at the positions of left driver 12 and right driver 13 to cool them, so as to avoid the high temperature generated by the long-time use of cement resistance for braking of the driver, and at the same time, the motor may encounter short-time overload during normal correction, and the driver does not alarm in the 1-3 times overload range, but the current will be multiplied, so the cooling fan 19 plays a role in prolonging the service life of left driver 12 and right driver 13 and protecting the control device.

[0046] As Figure 3 As shown, a control device placement area 16 is further arranged in the car body 1 inside the control panel 6, which can adopt Q235-5MM bending fittings, and the function here is to assist in fixing components such as left driver 12 and right driver 13, and placing electrical elements of the control system in the spare part.

[0047] In an embodiment, as Figure 6 As shown, it further includes a balance fixing mechanism 4, and the balance fixing mechanism 4 includes left-right balance assemblies and front-rear balance assemblies, the fixed part of the left-right balance assemblies is connected to the car body 1, the movable part of the left-right balance assemblies is connected to the fixed part of the front-rear balance assemblies, and the movable part of the front-rear balance assemblies is connected to the cutting machine 3. Through the balance fixing mechanism 4, the cutting machine 3 is actively balanced with the change of the car body 1, further ensuring the accuracy of the cutting parameters.

[0048] The left-right balance assembly comprises a left-right servo motor 41 and a left-right speed reducer 42 connected thereto, and the front-rear balance assembly comprises a front-rear servo motor 43 and a front-rear speed reducer 44. When the vehicle body 1 advances and the left side encounters an object, the object is large and has exceeded the adjustment range of the left suspension mechanism, at this time, the control system collects that the vehicle body 1 tilts to the right, and then gives a rotating instruction to the left-right servo motor 41 and a position instruction to move to the left, so that the left-right servo motor 41 quickly adjusts to the initial angle to the left. If a large protrusion suddenly appears in front of the vehicle during the advancing process, if the vehicle body 1 does not make any treatment, the cutting depth will not meet the requirements, the system monitors the deviation of the vehicle body 1 and the current acceleration information in real time, and the control system sends a rotating instruction and a position information to move downward to the front-rear servo motor 43, and the front-rear servo motor 43 quickly responds after receiving the information, so as to ensure that the final cutting depth meets the requirements.

[0049] In an embodiment, as shown in Figure 6 The balance fixing mechanism 4 further comprises an auxiliary support mechanism 45 connected to the fixing part of the front-rear balance assembly, and the auxiliary support mechanism 45 is used to support the vehicle body 1. The auxiliary support mechanism 45 can be an auxiliary wheel, which can follow the left-right swing of the front-rear balance assembly, and then support the relatively heavy front-rear balance assembly and the connected cutting machine 3 by the vehicle body 1.

[0050] The auxiliary wheel can adopt a bearing rubber coating structure, which is embedded with a deep groove ball bearing, and the bearing outer ring is coated with rubber. The rubber coating can adopt polyurethane with a hardness of 90, which can absorb part of the vibration and reduce the vibration of the left-right speed reducer 42 and the output shaft.

[0051] In an embodiment, as shown in Figure 3 The sensing device 5 is used to detect the inclination angle of the vehicle body 1 and the angle of the cutting machine 3. According to the monitoring result, the balance fixing mechanism 4 is adjusted. The sensing device 5 can adopt a multi-directional gyroscope or a Hall angle sensor.

[0052] In an embodiment, as shown in Figure 3As shown, the air inlet 15 and the air outlet 18 jointly form an air flow channel in the vehicle body 1, avoiding high temperature in the vehicle body 1 from damaging the device. The power converter 17 can provide stable power supply, and the utility model can use new energy such as lithium battery as power energy, without consuming fossil energy, solving the noise hazard of the device of traditional energy, and avoiding the burden of the gas discharged by the device of traditional energy on the body of the operator. Since the voltage of the lithium battery fluctuates during use, the fluctuating voltage can interfere with the signal collection of the device and the stable operation of the control system. The power converter 17 can provide a continuous and stable power supply. The control panel 6 includes a touch screen 63, and system operation parameters, device walking speed, device turning angle, device cutting depth, intermittent cutting, circular arc movement and the like can be quickly set by using the touch screen 63. The control panel 6 is also provided with an emergency stop switch 61 and a running button 62, and the running button 62 is used as a whole machine starting switch. When the running button 62 is pressed under the condition of power on, the device can be started, and the touch screen 63 is set to shut down after the device stops running. The function of the emergency stop switch 61 is to avoid the device from being damaged due to parameter input error or device disengagement from control, and to stop the device.

[0053] The principle and implementation mode of the utility model are described by applying specific examples in the utility model, and the above embodiment is only used to help understand the method and core idea of the utility model. Meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A track-type undercarriage characterized by, The application relates to a track-type walking mechanism, which comprises a main suspension, a support suspension, a driving suspension and a track. The main suspension is connected to a vehicle body. The support suspension comprises a first support frame and a second support frame which are hingedly connected to the main suspension and are connected at the top; the bottom of the first support frame is hingedly connected to a third support frame and is provided with a first limiting structure for limiting the swing range of the third support frame; the bottom of the third support frame is connected to a first wheel and a second wheel; the bottom of the second support frame is hingedly connected to a fourth support frame and is provided with a second limiting structure for limiting the swing range of the fourth support frame; the bottom of the fourth support frame is connected to a third wheel and a fourth wheel. The driving suspension is connected to a driving wheel. The track is sleeved on the outer sides of the first wheel, the second wheel, the third wheel, the fourth wheel and the driving wheel.

2. The track-type undercarriage of claim 1, wherein: The support suspension further comprises a first damping spring, the first end of which is connected to the first support frame and the second end of which is connected to the second support frame.

3. The track-type undercarriage of claim 1, wherein: The tensioning suspension is connected to a tensioning wheel, which is sleeved on the inner side of the track.

4. The track-type undercarriage of claim 3, wherein: The tensioning suspension comprises a first tensioning frame which is hingedly connected to the main suspension and a second tensioning frame which is fixedly connected to the main suspension; the first tensioning frame is connected to a first tensioning wheel and a second tensioning wheel; the second tensioning frame is connected to a third tensioning wheel.

5. The track-type undercarriage of claim 4, wherein: The tensioning suspension further comprises a second damping spring, the first end of which is connected to the main suspension and the second end of which is connected to the first tensioning frame.

6. The track-type undercarriage of claim 1, wherein: The driving suspension comprises a driving frame which is hingedly connected to the main suspension and a third damping spring, the driving wheel comprises a driving wheel and a driven wheel, the first end of the third damping spring is connected to the vehicle body or the main suspension, and the second end of the third damping spring is connected to the driving frame.

7. A concrete cutting device characterized by: The application further relates to a vehicle body and a track-type walking mechanism as claimed in any one of claims 1 to 6 which are installed on the vehicle body; the driving wheel is connected to a driving mechanism; and a cutting machine is installed on the vehicle body.

8. The concrete cutting device of claim 7, wherein: The application further relates to a balance fixing mechanism which comprises left-right balance assemblies and front-rear balance assemblies; the fixed part of the left-right balance assemblies is connected to the vehicle body; the movable part of the left-right balance assemblies is connected to the fixed part of the front-rear balance assemblies; and the movable part of the front-rear balance assemblies is connected to the cutting machine.

9. The concrete cutting device of claim 8, wherein: The balance fixing mechanism further comprises an auxiliary support mechanism which is connected to the fixed part of the front-rear balance assemblies and is used for abutting and supporting the vehicle body.

10. The concrete cutting device of claim 7, wherein: The application further relates to a sensing device which is used for detecting the inclination angle of the vehicle body and the angle of the cutting machine.

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