Trowel

Abstract

The present invention relates to a trowel machine, comprising a seat unit and a main unit, wherein the main unit is connected to at least one side of the seat unit, and the trowel machine further comprises an extension unit, which is connected to the main unit and can rotate around the main unit; the main unit and the extension unit both comprise a main frame and a trowel assembly, wherein the trowel assembly is connected to the inside of the main frame via a rotating shaft, and the trowel assembly can be rotated and adjusted relative to the main frame, and the axis of the rotating shaft on the main unit extends along the directions on both sides thereof. The present invention can be extended to a mode in which the main unit carries an extension unit, so as to expand the troweling area of ​​a single machine and improve the troweling efficiency; the number of extension units can also be selected more flexibly; the position of the extension unit can be adjusted, such as being spread out left and right, or distributed front and back, so as to more flexibly select the troweling area and meet higher demands on the trowel machine; the rotation adjustment method of the present invention makes the overall structure of the main unit and the extension unit simpler, and the adjustment is convenient and controllable.

Description

Technical Field

[0001] The invention belongs to the field of construction and repair machinery, and in particular relates to a driving type trowel machine. Background Art

[0002] A trowel is a machine that smoothes the surface of concrete, cement, mortar or other applicable mineral materials. It can perform rough and fine smoothing on the surface of concrete. The surface constructed by the machine is smoother and flatter than the surface constructed by humans, and can greatly improve the density and wear resistance of the concrete surface.

[0003] According to the operation type of the trowel, it can be mainly divided into hand-push trowel and driving trowel. Hand-push trowel needs to be pushed by manpower, so it is only suitable for leveling the ground in a smaller area. The operator of the driving trowel can sit on the trowel to level the ground, so it can be used for leveling the ground in a larger area.

[0004] In the prior art, a ride-on trowel machine usually uses two sets of trowel disc units for troweling, such as a trowel machine with publication number CN111021199A, a ride-on trowel machine with publication number CN118166611A, a trowel machine with publication number CN111021197A, and a ride-on trowel machine with publication number CN205821953U. They all have two sets of trowel disc units. However, due to the limitation on the number of trowel disc units, the troweling area is limited. If the troweling area is expanded by increasing the size of the trowel blades, the requirements for driving will increase, greatly increasing energy consumption. At the same time, due to the limitation on the troweling area, the troweling efficiency is also relatively low. Summary of the invention

[0005] The object of the present invention is to provide a trowel machine, in particular a ride-on trowel machine, which has a large troweling area and high troweling efficiency.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A smoothing machine comprises a seat unit and a main unit for smoothing the ground, wherein the main unit is connected to at least one side of the seat unit, and the smoothing machine also comprises an extension unit for smoothing the ground, wherein the extension unit is connected to the main unit and can rotate around the main unit; the main unit and the extension unit both comprise a main frame and a smoothing assembly, wherein the smoothing assembly is connected to the inside of the main frame via a rotating shaft and can be rotated and adjusted relative to the main frame, and the axis of the rotating shaft on the main unit extends along the directions on both sides thereof.

[0008] Preferably, in the above technical solution, the extension unit can be rotated around the main unit to the front, side, or rear of the main unit.

[0009] Preferably, the above technical solution is that the extension unit is rotatably connected to the main unit through a rotating assembly, the rotating assembly includes a rotating arm and a rotating drive component, one end of the rotating arm is rotatably connected to the main unit, the other end of the rotating arm is connected to the extension unit, the rotating drive component is transmission-connected to one end of the rotating arm, and is used to drive one end of the rotating arm to rotate, and the rotation of the extension unit is realized by the rotating arm, which has a simple structure and a good rotation effect.

[0010] Further preferably, the rotation axis at one end of the rotating arm extends in the vertical direction.

[0011] Further preferably, the rotating assembly further comprises:

[0012] Rotating disk: The rotating disk is connected to the main unit, and an annular tooth groove is formed on the upper surface of the rotating disk;

[0013] Gear: The gear is rotatably connected to the rotating arm, and the gear is arranged in the annular tooth groove and meshes with the annular tooth groove. The rotating driving component is arranged on the rotating arm and is transmission-connected to the gear.

[0014] More preferably, one end of the rotating arm has an upper clamping plate and a lower clamping plate, the rotating disk is located between the upper clamping plate and the lower clamping plate, and the gear is located below the upper clamping plate and can rotate relative to the upper clamping plate.

[0015] Still further preferably, a rolling member is provided between the upper clamping plate and the lower clamping plate. When the extension unit rotates around the main unit, the rolling member can roll on the outer peripheral surface of the rotating disk. The rolling member can play a certain auxiliary effect on the rotation of the rotating arm, making its rotation smoother.

[0016] Further preferably, the main frame of the extension unit is rotatably connected to the main frame of the host unit via a rotating assembly.

[0017] Further preferably, the main unit and the extension unit further include a rotating and telescopic driving cylinder, and the rotating and telescopic driving cylinder is connected between the main frame and the smoothing assembly to drive the smoothing assembly to rotate and adjust.

[0018] More preferably, the telescopic direction of the rotary telescopic drive cylinder is perpendicular to the extending direction of the rotating shaft.

[0019] Further preferably, when the extension unit is located at the side of the host unit, the axes of the rotating shafts on the host unit and the extension unit are located on the same straight line.

[0020] Further preferably, a pair of rotating shafts are provided on the main unit and the extension unit, and the axes of the pair of rotating shafts are located on the same straight line to ensure the stability of the rotation adjustment of the smoothing component.

[0021] Further preferably, the smoothing component includes a component frame, multiple groups of smoothing blades, and a smoothing drive component. The multiple groups of smoothing blades and the smoothing drive component are all connected to the component frame. The smoothing drive component is connected to the multiple groups of smoothing blades for driving the multiple groups of smoothing blades to rotate.

[0022] Further preferably, the rotating shaft is connected between the main frame and the component frame.

[0023] More preferably, the main frame includes a main bottom frame, multiple side brackets, and an outer cover, the lower ends of the multiple side brackets are connected to the main bottom frame, the upper ends of the multiple side brackets are connected as a whole, and the outer cover is arranged on the outer periphery of the multiple side brackets.

[0024] More preferably, the component frame includes a component bottom frame and a mounting frame, the mounting frame is connected to the top of the bottom frame, the multiple groups of trowel blades and the trowel driving components are connected to the mounting frame, and the multiple groups of trowel blades extend to the bottom of the main bottom frame and the component bottom frame;

[0025] The rotating shaft is connected between the main bottom frame and the component bottom frame.

[0026] Preferably, in the above technical solution, the trowel machine further comprises a lifting wheel unit, and both the main unit and the extension unit are connected to the lifting wheel unit, through which the trowel machine can be smoothly transferred.

[0027] Further preferably, the trowel machine has a trowel mode and a transfer mode. In the trowel mode: the main unit and the extension unit are supported on the ground; in the transfer mode: the lifting wheel unit is supported on the ground.

[0028] Further preferably, the lifting wheel unit includes a lifting and telescopic driving cylinder, a wheel body, and a travel driving component. The lifting and telescopic driving cylinder is connected to the main unit and the extension unit, the wheel body is connected to the lifting and telescopic driving cylinder, and the travel driving component is connected to the wheel body for driving the wheel body to move.

[0029] More preferably, the telescopic direction of the lifting and telescopic driving cylinder is a vertical direction.

[0030] More preferably, the axle of the wheel body connected to the main unit extends in both sides, so that the trowel can move forward and backward.

[0031] More preferably, when the extension unit is located at the side of the main unit, the axle connected to the wheel body on the extension unit extends in the front-to-back direction, so that the trowel can move forward and backward.

[0032] Preferably, in the above technical solution, the host unit is connected to both sides of the vehicle unit, and each host unit is connected to one extension unit.

[0033] Preferably, in the above technical solution, the trowel machine also includes an auxiliary unit for smoothing the ground, the auxiliary unit is connected to the extension unit, and the auxiliary unit can rotate around the extension unit. In this way, the trowel machine can be expanded to meet higher leveling requirements.

[0034] Further preferably, the auxiliary unit has the same structure as the extension unit, and the extension unit can be infinitely expanded in series, which has higher flexibility.

[0035] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0036] Compared with the traditional trowel machine with only two main units, the present invention can be expanded to a mode in which the main unit is equipped with an extension unit. By increasing the number of trowel components on the trowel machine, the trowel area of ​​a single machine is expanded, and the trowel efficiency is greatly improved. At the same time, the number of extension units can be selected more flexibly.

[0037] The position of the extension unit in the present invention can be adjusted, so that the main unit and the extension unit can be deployed left and right, or distributed front and back. Through flexible angle adjustment, the smoothing area can be selected more flexibly to meet higher requirements for the smoothing machine.

[0038] In the present invention, the main frame and the smoothing component are directly rotatably adjusted through the rotating shaft, so that the overall structure of the main unit and the extension unit is simpler and the adjustment is convenient and controllable; and the rotating shaft is arranged at the bottom of the main frame and the smoothing component, and the stability is also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Attached Figure 1 It is a three-dimensional schematic diagram of the extension units of the present invention when they are located on both sides of the main unit;

[0040] Attached Figure 2 It is a main view schematic diagram when the extension units are located on both sides of the main unit in the present invention;

[0041] Attached Figure 3 It is a bottom view schematic diagram when the extension units are located on both sides of the main unit in the present invention;

[0042] Attached Figure 4 It is a three-dimensional schematic diagram of the extension unit of the present invention when it is located at the rear side of the main unit;

[0043] Attached Figure 5 It is a three-dimensional schematic diagram of the extension units of the present invention being located on both sides of the main unit and with the outer cover hidden;

[0044] Attached Figure 6 It is a three-dimensional schematic diagram of the rotating assembly in the present invention;

[0045] Attached Figure 7 It is a bottom view schematic diagram of the rotating arm in the present invention;

[0046] Attached Figure 8 It is a three-dimensional schematic diagram of the main frame and the component frame in the present invention;

[0047] Attached Fig. 9 It is a three-dimensional schematic diagram of the lifting wheel unit in the present invention;

[0048] Attached Fig.10 It is a schematic diagram of the expansion of the main unit, extension unit and auxiliary unit in the present invention.

[0049] In the above attached figure:

[0050] 1. Seat unit; 10. Frame; 100. Pedal; 11. Seat; 12. Power source; 13. Water supply assembly;

[0051] 2. Host unit;

[0052] 3. Extension unit; 3', Auxiliary unit;

[0053] 4. Lifting wheel unit; 40. Lifting and telescopic drive cylinder; 41. Wheel body; 42. Traveling drive component;

[0054] 5. Rotating assembly; 50. Rotating arm; 500. Upper clamping plate; 501. Lower clamping plate; 51. Rotating driving component; 52. Rotating disk; 520. Outer peripheral surface; 521. Annular tooth groove; 530. Pinion; 531. Large gear; 54. Rolling element;

[0055] 60. Main bottom frame; 61. Side bracket; 62. Outer cover; 63. Component bottom frame; 64. Mounting frame; 65. Smoothing blades; 66. Smoothing drive components; 67. Rotating shaft; 68. Rotating telescopic drive cylinder. DETAILED DESCRIPTION

[0056] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0058] like Figure 1-Figure 4 The trowel shown includes a seat unit 1, a main unit 2, an extension unit 3, and a lifting wheel unit 4. Each unit is described in detail below.

[0059] The vehicle unit 1 mainly includes a frame 10, a seat 11, a power source 12, a water supply component 13, a control component (not shown in the figure), etc. The seat 11, the power source 12, and the water supply component 13 are all connected to the frame 10. Among them:

[0060] The seat 11 is used for the operator to sit and drive, and the frame 10 is equipped with a pedal 100 for the operator to get on and off; the power source 12 is used to provide power for the water supply component 13, the control component, the main unit 2, the extension unit 3, the lifting wheel unit 4, etc. The power source 12 can be selected such as a battery to provide electricity; the water supply component 13 is used for spraying water; the control component is used for the operator to control the water supply component 13, the main unit 2, the extension unit 3, the lifting wheel unit 4, etc. The water supply component 13 and the control component can adopt common structures, which are not related to the invention point and will not be repeated here.

[0061] like Figure 5 As shown: the seat 11, the power source 12, and the water supply component 13 are arranged up and down, the seat 11 is located at the top, and the water supply component 13 is located at the bottom, so that the layout of the entire vehicle unit 1 is reasonable and compact, and the occupied area is relatively small.

[0062] The main unit 2 and the extension unit 3 are the core units of the trowel machine, which are used to smooth the ground.

[0063] The host unit 2 is connected to at least one side of the vehicle unit 1. Preferably, one host unit 2 is connected to both sides of the vehicle unit 1, that is, the host unit 2 is connected to both sides of the vehicle unit 1; the extension unit 3 is connected to the host unit 2, and one of the host units 2 on both sides can be connected to the extension unit 3 and the other can not be connected to the extension unit 3, or the host units 2 on both sides are respectively connected to one extension unit 3, that is, each host unit 2 is connected to an extension unit 3.

[0064] like Figure 1 As shown: the seat unit 1 is located in the middle, two host units 2 are respectively located on both sides of the seat unit 1, and each host unit 2 is connected to an extension unit 3.

[0065] Compared with the traditional trowel machine with only two main units, the present embodiment can be expanded to two main units 2 + one extension unit 3, two main units 2 + two extension units 3 and other more units. The number of main units 2 and extension units 3 of the trowel machine can be flexibly selected, the troweling area is larger, and the troweling efficiency is greatly improved.

[0066] In this embodiment, the extension unit 3 can rotate around the main unit 2, that is, the extension unit 3 can rotate to the front of the main unit 2, or to the side of the main unit 2, or to the rear of the main unit 2. Due to the limitation of the seat unit 1, the extension unit 3 cannot actually rotate 360° around the main unit 2. Usually, the extension unit 3 rotates 90° forward or backward from the side of the main unit 2, such as Figure 4 shown.

[0067] Compared with simply increasing the number of extension units 3, the rotatable extension unit 3 can adjust its angle, so that the smoothing area can be selected more flexibly.

[0068] In one implementation of this embodiment: the extension unit 3 is rotatably connected to the main unit 2 via a rotating assembly 5. Specifically, the rotating assembly 5 includes a rotating arm 50 and a rotating driving component 51. One end of the rotating arm 50 is rotatably connected to the main unit 2, and the other end of the rotating arm 50 is connected to the extension unit 3. The rotating axis of one end of the rotating arm 50 extends in the vertical direction. The rotating driving component 51 is transmission-connected to one end of the rotating arm 50, and is used to drive one end of the rotating arm 50 to rotate. The rotating driving component 51 can be a combination of a motor and a reducer, such as Figure 6 shown.

[0069] When the extension unit 3 is rotated, the rotation driving component 51 drives one end of the rotation arm 50 to rotate on the main unit 2, or to rotate relative to the main unit 2, so that the other end of the rotation arm 50 drives the extension unit 3 to rotate.

[0070] In a preferred implementation of this embodiment: the rotating assembly 5 also includes a rotating disk 52 and a gear. Specifically: the rotating disk 52 is connected to the main unit 2, and the rotating disk 52 has an upper surface, a lower surface, and an outer peripheral surface 520 connecting the upper surface and the lower surface. The upper surface of the rotating disk 52 is provided with an annular tooth groove 521, such as a circular tooth groove. The gear is rotatably connected to the rotating arm 50, and the gear is set in the annular tooth groove 521 and meshes with the annular tooth groove 521. The rotating driving component 51 is set on the rotating arm 50 and is connected to the gear transmission, such as Figure 6 , Figure 7 shown.

[0071] The gears include a small gear 530 located in the middle and large gears 531 located on both sides of the small gear 530. The small gear 530 is in transmission connection with the rotating driving component 51, but is not meshed with the annular tooth groove 521. The large gear 531 is meshed with the small gear 530 and the annular tooth groove 521 at the same time. Figure 6 , Figure 7 shown.

[0072] When the extension unit 3 is rotated, the rotating driving component 51 drives the small gear 530 to rotate, and the rotation of the small gear 530 drives the large gear 531 to rotate. While the large gear 531 rotates, it rotates along the annular tooth groove 521, so that one end of the rotating arm 50 rotates relative to the rotating disk 52, and finally the other end of the rotating arm 50 drives the extension unit 3 to rotate.

[0073] In a preferred implementation of the present embodiment: one end of the rotating arm 50 has an upper clamping plate 500 and a lower clamping plate 501. The upper clamping plate 500, the lower clamping plate 501 and the rotating disk 52 are arranged in parallel. The rotating disk 52 is located between the upper clamping plate 500 and the lower clamping plate 501. More specifically, the upper clamping plate 500 and the lower clamping plate 501 clamp the rotating disk 52. The gear is located below the upper clamping plate 500 and can rotate relative to the upper clamping plate 500. Specifically, the output shaft of the rotating driving component 51, or the rotating shaft of the small gear 530 passes through the upper clamping plate 500, so that the rotating driving component 51 can drive the small gear 530 to rotate. Of course, the output shaft of the rotating driving component 51, or the rotating shaft of the small gear 530 and the upper clamping plate 500 are provided with a bearing, which does not affect the transmission of the two. The large gear 531 is rotatably connected to the lower surface of the upper clamping plate 500, such as Figure 6 , Figure 7 shown.

[0074] In addition, a rolling member 54 is provided between the upper clamping plate 500 and the lower clamping plate 501. The rolling member 54 may be a roller, a bearing, etc. When one end of the rotating arm 50 rotates relative to the rotating disk 52, the rolling member 54 may roll on the outer peripheral surface 520 of the rotating disk 52. The rolling member 54 may assist the rotation of the rotating arm 50 to a certain extent, making the rotation smoother. Figure 6 shown.

[0075] The main unit 2 and the extension unit 3 may adopt the same structure or different structures. By adopting the same structure, the trowel machine may be modularized, thereby reducing the difficulty and cost of manufacturing. This embodiment is described by taking the main unit 2 and the extension unit 3 adopting the same structure as an example.

[0076] The host unit 2 and the extension unit 3 both include a main frame and a smoothing component, and the smoothing component is arranged inside the main frame.

[0077] The main frame includes a main bottom frame 60, a plurality of side brackets 61, and an outer cover 62. The main bottom frame 60 is a circular frame; the lower ends of the plurality of side brackets 61 are connected to the main bottom frame 60, and the upper ends of the plurality of side brackets 61 are connected as a whole. The plurality of side brackets 61 are preferably evenly distributed to improve the overall stability of the main frame. The number of side brackets 61 is generally 3-6; the outer cover 62 is arranged on the outer periphery of the plurality of side brackets 61 to protect the internal leveling components, such as Figure 1-Figure 3 , Figure 5 , Figure 8 shown.

[0078] In this embodiment: the rotating disk 52 is connected to the top of the host unit 2, specifically the top of the main frame, that is, the rotating disk 52 is connected to the upper ends of multiple side brackets 61, or the upper ends of multiple side brackets 61 are connected as a whole through the rotating disk 52; the other end of the rotating arm 50 is connected to a side bracket 61 of the extension unit 3. Figure 5 As shown, the other end of the rotating arm 50 is connected to the connecting rod between the two side brackets 61 .

[0079] The smoothing component is a component in the main unit 2 and the extension unit 3 that performs smoothing work, and includes a component frame, multiple groups of smoothing blades 65, and a smoothing drive component 66. The multiple groups of smoothing blades 65 and the smoothing drive component 66 are all connected to the component frame. Among them: the component frame further includes a component bottom frame 63 and a mounting frame 64. The component bottom frame 63 is a multiple group of circular frames, which are arranged on the inner side of the main bottom frame 60; the mounting frame 64 is connected to the top of the component bottom frame 63, and the multiple groups of smoothing blades 65 and the smoothing drive component 66 are all connected to the mounting frame 64; the multiple groups of smoothing blades 65 extend to the bottom of the main bottom frame 60 and the component bottom frame 63, and the multiple groups of smoothing blades 65 can be rotated to smooth the ground. It is best if the multiple groups of smoothing blades 65 are evenly distributed, and the number of the multiple groups of smoothing blades 65 is generally 4-6; the smoothing drive component 66 is connected to the multiple groups of smoothing blades 65, and is used to drive the multiple groups of smoothing blades 65 to rotate. The smoothing drive component 66 can be a motor, or a battery, such as Figure 2 , Figure 3 , Figure 5 shown.

[0080] In this embodiment: the smoothing assembly is connected to the inside of the main frame through the rotating shaft 67, and the smoothing assembly can be rotated and adjusted relative to the main frame. Specifically: the rotating shaft 67 is connected between the main bottom frame 60 of the main frame and the component bottom frame 63 of the component frame. The axis of the rotating shaft 67 on the main unit 2 extends along the (left and right) two-way directions, that is, the smoothing assembly as a whole can be rotated forward and upward, or backward and upward to adjust the angle; when the extension unit 3 is located on the side (left and right) of the main unit 2, the axis of the rotating shaft 67 on the extension unit 3 also extends along the (left and right) two-way directions, and the axis of the rotating shaft 67 in the main unit 2 and the extension unit 3 are located on the same straight line. Of course, after the extension unit 3 is rotated, the axis position of its rotating shaft 67 will also change accordingly, such as Figure 3 , Figure 8 shown.

[0081] In order to ensure the stability of the rotation adjustment of the smoothing component, a pair (two) of rotating shafts 67 are arranged between the main bottom frame 60 of the main unit 2 and the extension unit 3 and the component bottom frame 63, and the axes of the pair of rotating shafts 67 are located on the same straight line, such as Figure 3 shown.

[0082] In one implementation of this embodiment: the main unit 2 and the extension unit 3 further include a rotating telescopic drive cylinder 68, which is connected between the main frame and the trowel assembly and is used to drive the trowel assembly to rotate and adjust. The telescopic direction of the rotating telescopic drive cylinder 68 is perpendicular to the extension direction of the rotating shaft 67, which is actually perpendicular in space. The rotating telescopic drive cylinder 68 can be an electric cylinder, and of course a hydraulic cylinder or a pneumatic cylinder is also possible. Figure 8 shown.

[0083] The main frame and the smoothing component are directly rotatably adjusted through the rotating shaft 67, which makes the overall structure of the main unit 2 and the extension unit 3 simpler and the adjustment is convenient and controllable; and the rotating shaft 67 is set at the bottom of the main frame and the smoothing component, which has better stability.

[0084] The lifting wheel unit 4 includes a lifting and telescopic driving cylinder 40, a wheel body 41, and a travel driving component 42. Among them: the lifting and telescopic driving cylinder 40 is connected to the main unit 2 or the extension unit 3, specifically connected to the main frame, the telescopic direction of the lifting and telescopic driving cylinder 40 is the vertical direction, the lifting and telescopic driving cylinder 40 can be an electric cylinder, of course, a hydraulic cylinder, a pneumatic cylinder is also possible; the wheel body 41 is connected to the lifting and telescopic driving cylinder 40; the travel driving component 42 is connected to the wheel body 41, used to drive the wheel body 41 to move, and the travel driving component 42 can be a motor, such as Fig. 9 shown.

[0085] In this embodiment, the host unit 2 and the extension unit 3 are both connected to the lifting wheel unit 4, and the wheel axle connected to the wheel body 41 on the host unit 2 extends along the (left and right) two-way direction; when the extension unit 3 is located at the side (left and right) of the host unit 2, the wheel axle connected to the wheel body 41 on the extension unit 3 extends along the front-back direction, such as Figure 1 shown.

[0086] like Figure 1 As shown: only one lifting wheel unit 4 is connected to the host unit 2, and one lifting wheel unit 4 is connected to the front side of its main frame; only one lifting wheel unit 4 is connected to the extension unit 3, when the extension unit 3 is located on the left side of the host unit 2, one lifting wheel unit 4 is connected to the left side of its main frame, when the extension unit 3 is located on the right side of the host unit 2, one lifting wheel unit 4 is connected to the right side of its main frame.

[0087] When the trowel needs to move forward and backward, such as when the extension unit 3 is located at the front or rear side of the main unit 2, the lifting wheel units 4 on the main unit 2 and the extension unit 3 are lowered and moved. If the extension unit 3 is located at both sides of the main unit 2, the lifting wheel units 4 on the main unit 2 are lowered and moved; when the trowel needs to move left and right, the extension unit 3 is rotated to both sides of the main unit 2, and the lifting wheel units 4 on the extension unit 3 are lowered and moved. In this way, the trowel can directly realize the movement of front, back, left and right without turning, and can be used for leveling the ground in a smaller area. Of course, other movement methods can also be used.

[0088] In this embodiment: the trowel machine has a trowel mode and a transition mode.

[0089] When in the smoothing mode, the main unit 2 and the extension unit 3 need to smooth the ground: at this time, the lifting wheel unit 4 lifts the wheel body 41 through the lifting and telescopic driving cylinder 40, so that the main unit 2 and the extension unit 3 are supported on the ground, and the smoothing blade 65 is driven by the smoothing driving component 66 to rotate and smooth. The smoothing blades 65 of the main unit 2 and the extension unit 3 on both sides turn in opposite directions, and at the same time, the rotating telescopic driving cylinder 68 is used to push the smoothing assembly to rotate forward or backward at a certain angle, so that the main unit 2 and the extension unit 3 can move forward or backward while smoothing. When turning, it is only necessary to adjust the rotation speed of the smoothing blades 65 of the main unit 2 and the extension unit 3 on both sides. According to the needs of smoothing, the angle of the extension unit 3 can be adjusted by the rotating assembly 5 to meet the smoothing operation in different areas.

[0090] In the transfer mode: the lifting wheel unit 4 lowers the wheel body 41 through the lifting and telescopic driving cylinder 40, so that the wheel body 41 is supported on the ground, the main unit 2 and the extension unit 3 are lifted accordingly, and the movement of the trowel can be realized through the lifting wheel unit 4.

[0091] In an extended form of this embodiment, the trowel also includes an auxiliary unit 3', which is also used to smooth the ground. The auxiliary unit 3' is connected to the extension unit 3, and the auxiliary unit 3' can also rotate around the extension unit 3, such as Fig.10 shown.

[0092] The auxiliary unit 3' can have the same structure as the extension unit 3, and the auxiliary unit 3' can also be rotatably connected to the extension unit 3 through the rotating assembly 5. In other words, the extension unit 3 can be rotatably connected to the extension unit 3, so as to continue to expand the trowel machine infinitely.

[0093] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A trowel, comprising a seat unit and a main unit for troweling the ground, wherein the main unit is connected to at least one side of the seat unit, and characterized in that: The trowel also includes an extension unit for smoothing the ground, the extension unit is connected to the main unit, and the extension unit can rotate around the main unit to the front, side, or rear of the main unit, the extension unit is rotatably connected to the main unit through a rotating assembly, the rotating assembly includes a rotating arm and a rotating driving component, one end of the rotating arm is rotatably connected to the main unit, the other end of the rotating arm is connected to the extension unit, and the rotating driving component is transmission-connected to one end of the rotating arm, and is used to drive one end of the rotating arm to rotate; The host unit and the extension unit both include a main frame and a smoothing assembly. The smoothing assembly is connected to the inside of the main frame via a rotating shaft, and the smoothing assembly can be rotated and adjusted relative to the main frame. The axis of the rotating shaft on the host unit extends along its two sides.

2. The trowel according to claim 1, characterized in that: The rotation axis of one end of the rotating arm extends along the vertical direction.

3. The trowel according to claim 1, characterized in that: The rotating assembly further comprises: Rotating disk: The rotating disk is connected to the main unit, and an annular tooth groove is formed on the upper surface of the rotating disk; Gear: The gear is rotatably connected to the rotating arm, and the gear is arranged in the annular tooth groove and meshes with the annular tooth groove. The rotating driving component is arranged on the rotating arm and is transmission-connected to the gear.

4. The trowel according to claim 3, characterized in that: One end of the rotating arm is provided with an upper clamping plate and a lower clamping plate, the rotating disk is located between the upper clamping plate and the lower clamping plate, and the gear is located below the upper clamping plate and can rotate relative to the upper clamping plate.

5. The trowel according to claim 4, characterized in that: A rolling piece is arranged between the upper clamping plate and the lower clamping plate. When the extension unit rotates around the main unit, the rolling piece can roll on the outer peripheral surface of the rotating disk.

6. The trowel machine according to claim 1, characterized in that: The main unit and the extension unit further include a rotating and telescopic driving cylinder, which is connected between the main frame and the smoothing assembly and is used to drive the smoothing assembly to rotate and adjust; The telescopic direction of the rotating telescopic driving cylinder is perpendicular to the extending direction of the rotating shaft.

7. The trowel according to claim 1, characterized in that: When the extension unit is located on the side of the host unit, the axes of the rotating shafts on the host unit and the extension unit are located on the same straight line; A pair of rotating shafts are provided on the host unit and the extension unit, and the axes of the pair of rotating shafts are located on the same straight line.

8. The trowel machine according to claim 1, characterized in that: The smoothing assembly comprises an assembly frame, a plurality of groups of smoothing blades, and a smoothing driving component. The plurality of groups of smoothing blades and the smoothing driving component are connected to the assembly frame. The smoothing driving component is connected to the plurality of groups of smoothing blades to drive the plurality of groups of smoothing blades to rotate. The rotating shaft is connected between the main frame and the component frame.

9. The trowel machine according to claim 8, characterized in that: The main frame includes a main bottom frame, a plurality of side brackets, and an outer cover, wherein the lower ends of the plurality of side brackets are connected to the main bottom frame, the upper ends of the plurality of side brackets are connected as one body, and the outer cover is arranged on the outer periphery of the plurality of side brackets; The assembly frame includes an assembly bottom frame and a mounting frame, wherein the mounting frame is connected to the top of the bottom frame, the multiple groups of trowel blades and the trowel driving components are connected to the mounting frame, and the multiple groups of trowel blades extend to the bottom of the main bottom frame and the assembly bottom frame; The rotating shaft is connected between the main bottom frame and the component bottom frame.

10. The trowel machine according to claim 1, characterized in that: The trowel also includes an auxiliary unit for troweling the ground, the auxiliary unit is connected to the extension unit, and the auxiliary unit can rotate around the extension unit; The structure of the auxiliary unit is the same as that of the extension unit.

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