Hand-held concrete vibrating mechanism

Abstract

The application discloses a handheld concrete vibrating mechanism, which comprises a machine shell, a worm, a worm wheel, an elastic pressing mechanism and a connecting seat and the like. In the application, the support arm II rotates counterclockwise around the center of the connecting shaft II by shortening the oil cylinder, so that the wheel II contacts the bottom surface, and the wheel I also contacts the bottom surface by cooperating with the connecting rod, which facilitates the movement of the mechanism to the required position for use by the wheel II and the wheel I, thereby improving the convenience during use. The vibration mechanism arranged in the application can drive the guide block and the vibrating seat to move up and down by the rotation of the rotating disc, the rotating block II, the connecting arm and the rotating block I, so that the concrete can be vibrated and compacted. In addition, the rotation of the rotating disc can also make the vibration mechanism produce horizontal eccentric vibration as a whole by the eccentric block, so that the concrete can be vibrated and compacted while being laid flat, thereby improving the quality of the leveled concrete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibrating screed machine, in particular to a hand-held concrete vibrating screed mechanism. BACKGROUND

[0002] The concrete vibrating screed machine, also known as concrete vibrating ruler, concrete vibrator, concrete vibrating screed machine, concrete vibrator, internal combustion engine concrete vibrating device, concrete vibrating screed machine, vibrating trowel, vibrating ruler, vibrating screed, screed, screed machine, etc. It is one of the necessary tools for pouring concrete, and is widely used in building, road repairing, bridge building, water conservancy engineering and other construction industries. However, the existing hand-held concrete vibrating screed mechanism has poor vibrating effect, and it is also inconvenient to move when not working. SUMMARY

[0003] The purpose of the present application is to provide a hand-held concrete vibrating screed mechanism to solve the above problems, and to solve the problems of poor vibrating effect of the existing hand-held concrete vibrating screed mechanism, and inconvenience in moving when not working.

[0004] In order to solve the above problems, the present application provides a technical scheme: a hand-held concrete vibrating screed mechanism, which has the following innovative points: a machine shell, a worm, a worm wheel, a rotating seat, a motor one, a handle, a walking mechanism, a vibrating mechanism, a motor two, a driving roller, a guide roller one, a guide roller two, a leveling belt, a guide roller, an elastic pressing mechanism and a connecting seat; the handle is fixedly connected to the upper left corner of the machine shell, the motor one is fixedly connected to the inside of the upper left side of the machine shell, and the worm is fixedly connected to the output shaft on the right side of the motor one; the rotating seat is movably connected to the lower central inside of the machine shell on the upper side, the worm wheel is fixedly connected to the upper central of the rotating seat, and the worm wheel is connected with the worm, the connecting seat is fixedly connected to the bottom of the rotating seat; the walking mechanism is arranged outside the machine shell; the guide roller is movably connected to the inside of the connecting seat on the left and right lower sides, and the motor two is fixedly connected to the rear outside of the connecting seat; the elastic pressing mechanism is two, and the two elastic pressing mechanisms are symmetrically arranged and fixedly connected to the inside of the connecting seat on the left and right upper sides; the guide roller one and the guide roller two are movably connected to the inside of the connecting seat on the upper central; the driving roller is movably connected to the inside of the connecting seat on the upper central, the output shaft of the motor two is fixedly connected to the central inside of the driving roller, and the driving roller is connected with the guide roller, the elastic pressing mechanism, the guide roller one and the guide roller two through the leveling belt; the vibrating mechanism is fixedly connected to the inside of the connecting seat on the lower side, and the bottom surface of the vibrating mechanism is connected with the inside bottom surface of the leveling belt.

[0005] As preferred, the specific structure of the walking mechanism comprises support arm one, connecting shaft one, wheel one, oil cylinder, wheel two, support arm two, connecting shaft two and connecting rod; the connecting shaft one is movably connected inside the right side of the machine shell body; the support arm one is two, the upper inner sides of the centers of the two support arm ones are respectively fixedly connected to the outer sides of the front and back of the connecting shaft one, and the outer lower sides of the two support arm ones are movably connected with the wheel one; the connecting shaft two is movably connected inside the left side of the machine shell body; the support arm two is two, the upper inner sides of the centers of the two support arm twos are respectively fixedly connected to the outer sides of the front and back of the connecting shaft two, and the outer lower sides of the two support arm twos are movably connected with the wheel two; the right side of the oil cylinder is movably connected to the lower center of the back of the machine shell body, and the left side of the oil cylinder is movably connected with the center of the back of the support arm two; the right side of the connecting rod is hingedly connected to the upper side of the support arm one, and the left side of the connecting rod is hingedly connected to the upper side of the support arm two.

[0006] As preferred, the support arm two is parallel to the support arm one.

[0007] As preferred, the specific structure of the vibrating mechanism comprises fixed seat, transmission cavity, chain wheel, chain, motor three, guide groove, vibration seat, mounting groove, eccentric block, guide block, rotating block one, guide hole, connecting arm, rotating block two, rotating disc and vibration cavity; the upper inner side of the fixed seat is provided with the transmission cavity, the center inner side of the fixed seat is provided with the vibration cavity, the bottom surface of the fixed seat is provided with the guide groove, and the top of the fixed seat is fixedly connected with the motor three; the bottom surface of the vibration cavity is provided with a plurality of guide holes, the top surface of the vibration cavity is provided with a mounting groove, and the mounting groove is located on the upper side of the corresponding guide hole; the upper outer side of the vibration seat is movably connected inside the guide groove, the top of the vibration seat is fixedly connected with a plurality of guide blocks, and the outer side of the guide block is movably connected inside the corresponding guide hole; the rotating block one is a plurality of, and the lower outer side of the rotating block one is movably connected to the center inner side of the corresponding guide block; the chain wheel is a plurality of, and the chain wheel is movably connected inside the transmission cavity; one of the chain wheels is fixedly connected with the lower output shaft of the motor three; the rotating disc is a plurality of, and the rotating disc is movably connected inside the corresponding mounting groove; the upper center of the rotating disc is fixedly connected with the lower center shaft of the corresponding chain wheel; the right outer side of the rotating disc is fixedly connected with the eccentric block, and the left inner side of the rotating disc is movably connected with the rotating block two; the connecting arm is a plurality of, and the lower side of the connecting arm is hingedly connected with the upper side of the corresponding rotating block one; the upper side of the connecting arm is hingedly connected with the lower side of the corresponding rotating block two.

[0008] As preferred, the motor three is a servo motor or a variable frequency motor.

[0009] As preferred, the bottom surface of the vibration seat is a smooth wear-resistant surface.

[0010] As preferred, the specific structure of the elastic tensioning mechanism comprises a sliding hole seat, a sliding hole, a movable sleeve, a connecting hole, a spring, a mounting seat and a tensioning roller; the sliding hole seat is internally provided with a sliding hole on the right side; the movable sleeve is transversely movably connected inside the sliding hole on the left side, the movable sleeve is internally provided with a connecting hole on the left side, and the connecting hole is provided with a spring between the left side of the sliding hole, and the movable sleeve is fixedly connected with a mounting seat at the right side end; the mounting seat is movably connected with a tensioning roller inside the right side.

[0011] As preferred, the sliding hole is a rectangular sliding hole.

[0012] As preferred, the motor one and the motor two are both servo motors or variable frequency motors.

[0013] The beneficial effects of the present application are:

[0014] (1) The present application has reasonable and simple structure, low production cost and convenient installation, here the supporting arm two is rotated counterclockwise around the center of the connecting shaft two through the shortening of the oil cylinder, so that the wheel two can contact the bottom surface, and the connecting rod can drive the wheel one to also contact the bottom surface, so as to facilitate the movement of the present mechanism to the required use through the wheel two and the wheel one, thereby improving the convenience during use.

[0015] (2) The vibration mechanism arranged in the present application can drive the guide block and the vibration seat to move up and down through the rotation of the rotating disc, the rotating block two, the connecting arm and the rotating block one, so as to perform the vibration compaction treatment on the concrete, and the rotation of the rotating disc can also make the whole vibration mechanism produce horizontal eccentric vibration through the eccentric block, so as to perform the vibration compaction treatment on the concrete and also perform the paving operation, thereby improving the quality of the leveled concrete.

[0016] (3) The elastic tensioning mechanism arranged in the present application can keep the paving belt in a tight state at all times, so as to avoid the uneven phenomenon of the paving belt during the operation of the vibration mechanism, thereby improving the paving effect of the paving belt.

[0017] (4) The motor two arranged in the present application can drive the paving belt to move through the driving roller, so as to further perform the leveling treatment on the concrete through the paving belt, thereby improving the flatness of the concrete surface.

[0018] (5) The motor one arranged in the present application can drive the rotating seat and the connecting seat to rotate as a whole through the worm and the worm wheel, so as to meet the needs of different direction vibration leveling operations, thereby improving the convenience during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the present application.

[0020] Figure 2 It isFigure 1 A sectional view.

[0021] Figure 3 This is a schematic diagram of the walking mechanism.

[0022] Figure 4 This is a schematic diagram of the vibration mechanism.

[0023] Figure 5 for Figure 4 A magnified view of position A in the middle.

[0024] Figure 6 This is a schematic diagram of the elastic clamping mechanism.

[0025] 1-Machine housing; 2-Worm gear; 3-Worm wheel; 4-Rotating seat; 5-Motor 1; 6-Handle; 7-Traveling mechanism; 8-Vibration mechanism; 9-Motor 2; 10-Drive roller; 11-Guide roller 1; 12-Guide roller 2; 13-Plain belt; 14-Guide roller; 15-Elastic clamping mechanism; 16-Connecting seat; 71-Support arm 1; 72-Connecting shaft 1; 73-Wheel 1; 74-Hydraulic cylinder; 75-Wheel 2; 76-Support arm 2; 77-Connecting shaft 2; 78-Connecting rod; 81- 82-Fixed base; 83-Transmission cavity; 84-Sprocket; 85-Chain; 86-Motor 3; 87-Guide groove; 88-Vibration leveling base; 89-Mounting groove; 810-Guide block; 811-Rotating block 1; 812-Guide hole; 813-Connecting arm; 814-Rotating block 2; 815-Turntable; 816-Vibration cavity; 151-Sliding hole base; 152-Sliding hole; 153-Modible sleeve; 154-Connecting hole; 155-Spring; 156-Mounting base; 157-Tightening roller. Detailed Implementation

[0026] like Figure 1 and Figure 2As shown, this specific embodiment adopts the following technical solution: A handheld concrete vibratory leveling mechanism includes a housing 1, a worm gear 2, a worm wheel 3, a rotating seat 4, a first motor 5, a handle 6, a walking mechanism 7, a vibration mechanism 8, a second motor 9, a drive roller 10, a first guide wheel 11, a second guide wheel 12, a leveling belt 13, a guide roller 14, an elastic clamping mechanism 15, and a connecting seat 16; the handle 6 is fixedly connected to the upper left corner of the housing 1, the first motor 5 is fixedly connected to the interior of the upper left side of the housing 1, and the worm gear 2 is fixedly connected to the output shaft on the right side of the first motor 5; the upper side of the rotating seat 4 is movably connected to the interior of the lower center of the housing 1, the worm wheel 3 is fixedly connected to the center of the upper side of the rotating seat 4, and the worm wheel 3 is connected to the worm gear 2; the bottom of the rotating seat 4 is fixedly connected to the connecting seat 16; the walking mechanism 7 is located on the outside of the housing 1. The connecting seat 16 has guide rollers 14 movably connected to its left and right lower sides, and a motor 9 is fixedly connected to the rear exterior of the connecting seat 16. There are two elastic clamping mechanisms 15, symmetrically arranged and fixedly connected to the left and right upper sides of the connecting seat 16. Guide roller 11 and guide roller 2 12 are movably connected to the upper center of the connecting seat 16. The drive roller 10 is movably connected to the upper center of the connecting seat 16, and the output shaft of motor 9 is fixedly connected to the center of the drive roller 10. The drive roller 10 is connected to the guide rollers 14, the elastic clamping mechanisms 15, and guide rollers 11 and 12 respectively via a flattening belt 13. The vibration mechanism 8 is fixedly connected to the lower side of the connecting seat 16, and its bottom surface is connected to the inner bottom surface of the flattening belt 13.

[0027] like Figure 3 As shown, the specific structure of the walking mechanism 7 includes a support arm 71, a connecting shaft 72, a wheel 73, a hydraulic cylinder 74, a second wheel 75, a second support arm 76, a second connecting shaft 77, and a connecting rod 78; the first connecting shaft 72 is movably connected to the inside of the right side of the housing 1; there are two support arms 71, with the inner center of the two support arms 71 fixedly connected to the outer front and rear sides of the connecting shaft 72 respectively, and the lower outer sides of both support arms 71 are movably connected to wheels 73; the second connecting shaft 77 is movably connected to... Inside the left side of the housing 1; there are two support arms 76, the upper center of each support arm 76 is fixedly connected to the front and rear sides of the connecting shaft 77, and wheels 75 are movably connected to the lower outer sides of each support arm 76; the right side of the cylinder 74 is movably connected to the center of the lower rear side of the housing 1, and the left piston rod of the cylinder 74 is movably connected to the center of the rear rear side of the support arm 76; the right side of the connecting rod 78 is hinged to the upper side of the support arm 71, and the left side of the connecting rod 78 is hinged to the upper side of the support arm 76.

[0028] The second support arm 76 and the first support arm 71 are parallel to each other.

[0029] As Figure 4 And Figure 5 The specific structure of the vibration mechanism 8 includes a fixed seat 81, a transmission cavity 82, a chain wheel 83, a chain 84, a motor three 85, a guide groove 86, a vibration seat 87, a mounting groove 88, an eccentric block 89, a guide block 810, a rotating block one 811, a guide hole 812, a connecting arm 813, a rotating block two 814, a rotating disc 815 and a vibration cavity 816, as shown in the figure. The inside of the upper side of the fixed seat 81 is provided with the transmission cavity 82, and the inside of the center of the fixed seat 81 is provided with the vibration cavity 816. The bottom surface of the fixed seat 81 is provided with the guide groove 86, and the top of the fixed seat 81 is fixedly connected with the motor three 85. The bottom surface of the vibration cavity 816 is provided with a plurality of guide holes 812, and the top surface of the vibration cavity 816 is provided with the mounting groove 88, and the mounting groove 88 is located on the upper side of the corresponding guide hole 812. The upper side of the vibration seat 87 is vertically movably connected inside the guide groove 86, and the top of the vibration seat 87 is fixedly connected with a plurality of guide blocks 810, and the outer part of the guide block 810 is movably connected inside the corresponding guide hole 812. The rotating block one 811 is a plurality of rotating blocks, and the outer part of the lower side of the rotating block one 811 is movably connected to the upper side of the corresponding guide block 810. The chain wheel 83 is a plurality of chain wheels, and the chain wheel 83 is movably connected inside the transmission cavity 82. The chain wheel 83 is connected by the chain 84, and the upper side of one of the chain wheels 83 is fixedly connected with the lower side output shaft of the motor three 85. The rotating disc 815 is a plurality of rotating discs, and the rotating disc 815 is movably connected inside the corresponding mounting groove 88. The upper side center of the rotating disc 815 is fixedly connected with the lower side center shaft of the corresponding chain wheel 83. The right side of the rotating disc 815 is fixedly connected with the eccentric block 89, and the left side of the rotating disc 815 is movably connected with the rotating block two 814. The connecting arm 813 is a plurality of connecting arms, and the lower side of the connecting arm 813 is hingedly connected with the upper side of the corresponding rotating block one 811. The upper side of the connecting arm 813 is hingedly connected with the lower side of the corresponding rotating block two 814.

[0030] The motor three 85 is a servo motor or a variable frequency motor, so that the system of the motor three 85 can be controlled by existing technology. The bottom surface of the vibration seat 87 is a smooth wear-resistant surface.

[0031] As Figure 6As shown, the specific structure of the elastic tension mechanism 15 includes sliding hole seat 151, sliding hole 152, movable sleeve body 153, connecting hole 154, spring 155, mounting seat 156 and tension roller 157; the right side of the sliding hole seat 151 is internally provided with the sliding hole 152; the left side of the movable sleeve body 153 is externally transversely movably connected in the sliding hole 152, the left side of the movable sleeve body 153 is internally provided with the connecting hole 154, and the spring 155 is arranged between the connecting hole 154 and the left side of the sliding hole 152, and the right end of the movable sleeve body 153 is fixedly connected with the mounting seat 156; the right side of the mounting seat 156 is movably connected with the tension roller 157.

[0032] Among them, the sliding hole 152 is a rectangular sliding hole; the motor one 5 and the motor two 9 are both servo motors or variable frequency motors, so as to facilitate controlling the speed of the motor one 5 and the motor two 9 through existing technology.

[0033] The use state of the application is: the application has reasonable and simple structure, low production cost and convenient installation. When in use, first, the supporting arm two 76 is rotated counterclockwise around the center of the connecting shaft two 77 by shortening the oil cylinder 74, so that the wheel two 75 can contact the bottom surface, and the connecting rod 78 can drive the wheel one 73 to also contact the bottom surface, so as to facilitate moving the mechanism to the required use position through the wheel two 75 and the wheel one 73, thereby improving the convenience in use. The vibration mechanism 8 set herein can drive a sprocket 83 to rotate through a motor three 85, the rotation of the sprocket 83 drives other sprockets 83 to rotate through a chain 84, and the rotation of all sprockets 83 drives the rotation of the corresponding rotating disc 815, and the rotation of the rotating disc 815 drives the guide block 810 and the vibration seat 87 to move up and down through the rotating block two 814, the connecting arm 813 and the rotating block one 811, so as to perform the vibration and compaction treatment on the concrete. In addition, the rotation of the rotating disc 815 can also make the vibration mechanism 8 produce horizontal eccentric vibration as a whole through the eccentric block 89, so as to perform the vibration and compaction treatment on the concrete and also perform the paving operation, thereby improving the quality of the leveled concrete. The elastic tension mechanism 15 can keep the paving belt 13 in a tight state, so as to avoid the uneven phenomenon of the paving belt 13 when the vibration mechanism 8 works, thereby improving the paving effect of the paving belt 13. The motor two 9 can drive the paving belt 13 to move through the driving roller 10, so as to further perform the leveling treatment on the concrete through the paving belt 13, thereby improving the flatness of the concrete surface. The motor one 5 can drive the rotating seat 4 and the connecting seat 16 to rotate as a whole through the worm 2 and the worm gear 3, so as to meet the needs of vibration and leveling operation in different directions, thereby improving the convenience in use.

[0034] The control mode of the present application is controlled by manual starting or by existing automation technology, the wiring diagram of the power element and the power supply are common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and wiring arrangement of the present application will not be explained in detail.

[0035] In the description of the application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does 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 application.

[0036] In the application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the application can be understood according to the specific meaning in the application by the person skilled in the art according to the specific situation.

[0037] The basic principles and main features of the application and the advantages of the application are shown and described above, it should be understood by those skilled in the art that the application is not limited by the above-mentioned embodiments, the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the application, under the premise of not departing from the spirit and scope of the application, the application can also have various changes and improvements, these changes and improvements all fall within the scope of the claimed application, the scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A hand-held concrete screeding mechanism, characterised in that: The machine shell body (1) is fixedly connected with the handle (6) at the upper left corner, and the motor one (5) is fixedly connected inside the upper left side of the machine shell body (1), and the worm (2) is fixedly connected on the right side output shaft of the motor one (5); The rotating seat (4) is movably connected to the lower side central part of the machine shell body (1) on the upper side, and the worm gear (3) is fixedly connected to the upper side center of the rotating seat (4), and the worm gear (3) is connected with the worm (2), and the connecting seat (16) is fixedly connected to the bottom of the rotating seat (4); The walking mechanism (7) is arranged outside the machine shell body (1); The connecting seat (16) is movably connected with the guide roller (14) on the left and right lower sides inside, and the motor two (9) is fixedly connected to the rear outside of the connecting seat (16); The elastic pressing mechanism (15) is two, and the two elastic pressing mechanisms (15) are symmetrically arranged and fixedly connected to the left and right upper sides inside the connecting seat (16); The guide roller one (11) and the guide roller two (12) are movably connected to the upper side center inside the connecting seat (16); The driving roller (10) is movably connected to the upper side center inside the connecting seat (16), and the motor two (9) output shaft is fixedly connected to the central part inside the driving roller (10), and the driving roller (10) is connected with the guide roller (14) and the elastic pressing mechanism (15) and the guide roller one (11) and the guide roller two (12) through the flattening belt (13); The vibration mechanism (8) is fixedly connected to the lower side inside the connecting seat (16), and the bottom surface of the vibration mechanism (8) is connected with the inner bottom surface of the flattening belt (13); The specific structure of the walking mechanism (7) comprises a supporting arm one (71), a connecting shaft one (72), a wheel one (73), an oil cylinder (74), a wheel two (75), a supporting arm two (76), a connecting shaft two (77) and a connecting rod (78); The connecting shaft one (72) is movably connected to the right side inside the machine shell body (1); The supporting arm one (71) is two, and the two supporting arms one (71) are fixedly connected to the front and rear sides outside the connecting shaft one (72) on the central upper side inside, and the wheel one (73) is movably connected to the outer lower side of the two supporting arms one (71); The connecting shaft two (77) is movably connected to the left side inside the machine shell body (1); The supporting arm two (76) is two, and the two supporting arms two (76) are fixedly connected to the front and rear sides outside the connecting shaft two (77) on the central upper side inside, and the wheel two (75) is movably connected to the outer lower side of the two supporting arms two (76); The oil cylinder (74) is movably connected to the rear lower side center of the machine shell body (1) on the right side, and the left side piston rod of the oil cylinder (74) is movably connected with the rear side central part of the rear side supporting arm two (76). ​ The connecting rod (78) is hingedly connected to the upper side of the support arm one (71) on the right side, and is hingedly connected to the upper side of the support arm two (76) on the left side.

2. The hand-held concrete screeding mechanism of claim 1, wherein: The support arm two (76) and the support arm one (71) are parallel to each other.

3. The hand-held concrete screeding mechanism of claim 1, wherein: The specific structure of the vibration mechanism (8) comprises a fixed seat (81), a transmission cavity (82), a chain wheel (83), a chain (84), a motor three (85), a guide groove (86), a vibration seat (87), a mounting groove (88), an eccentric block (89), a guide block (810), a rotating block one (811), a guide hole (812), a connecting arm (813), a rotating block two (814), a rotating disc (815) and a vibration cavity (816). The fixed seat (81) is internally provided with the transmission cavity (82) on the upper side, and is internally provided with the vibration cavity (816) in the center. A plurality of guide holes (812) are formed on the bottom surface of the vibration cavity (816), and a mounting groove (88) is formed on the top surface of the vibration cavity (816), and the mounting groove (88) is located on the upper side of the corresponding guide hole (812). The vibration seat (87) is vertically movably connected to the inside of the guide groove (86) on the upper side, and a plurality of guide blocks (810) are fixedly connected to the top of the vibration seat (87), and the guide blocks (810) are movably connected to the inside of the corresponding guide hole (812) on the outside. A plurality of rotating blocks one (811) are provided, and the lower side of each rotating block one (811) is movably connected to the upper side of the corresponding guide block (810) in the center. A plurality of chain wheels (83) are provided, and each chain wheel (83) is movably connected to the inside of the transmission cavity (82) on the upper side of the corresponding mounting groove (88), and one of the chain wheels (83) is fixedly connected to the lower side output shaft of the motor three (85) on the upper side. A plurality of rotating discs (815) are provided, and each rotating disc (815) is movably connected to the inside of the corresponding mounting groove (88), and the upper side center of each rotating disc (815) is fixedly connected to the lower side center shaft of the corresponding chain wheel (83), and each rotating disc (815) is fixedly connected to the eccentric block (89) on the right side outside, and each rotating disc (815) is movably connected to the rotating block two (814) on the left side inside. A plurality of connecting arms (813) are provided, and the lower side of each connecting arm (813) is hingedly connected to the upper side of the corresponding rotating block one (811), and the upper side of each connecting arm (813) is hingedly connected to the lower side of the corresponding rotating block two (814).

4. The hand-held concrete screeding mechanism of claim 3, wherein: The motor three (85) is a servo motor or a variable frequency motor.

5. The hand-held concrete screeding mechanism of claim 3, wherein: The bottom surface of the vibration seat (87) is a smooth wear-resistant surface.

6. The hand-held concrete screeding mechanism of claim 1, wherein: The specific structure of the elastic top pressing mechanism (15) comprises a sliding hole seat (151), a sliding hole (152), a movable sleeve body (153), a connecting hole (154), a spring (155), a mounting seat (156) and a top pressing roller (157). The sliding hole seat (151) is internally provided with a sliding hole (152) on the right side; The left side of the movable sleeve body (153) is externally transversely movably connected in the sliding hole (152), the left side of the movable sleeve body (153) is internally provided with a connecting hole (154), a spring (155) is arranged between the connecting hole (154) and the left side of the sliding hole (152), and the right end of the movable sleeve body (153) is fixedly connected with a mounting seat (156); The mounting seat (156) is movably connected with a jacking roller (157) on the right side.

7. The hand-held concrete screeding mechanism of claim 6, wherein: The sliding hole (152) is a rectangular sliding hole.

8. The hand-held concrete screeding mechanism of claim 1, wherein: The motor one (5) and the motor two (9) are both servo motors or variable frequency motors.

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