Adjustable concrete vibrating device

Abstract

The invention discloses an adjustable concrete vibrating device, which belongs to the technical field of building construction appliances, and comprises a vibrating rod connected with an output line, a winding and unwinding assembly and an output assembly, the take-up and pay-off assembly is connected with the output line and used for adjusting the position of the vibrating rod up and down; the output assembly is connected with the retracting and releasing assembly, and the vibrating frequency of the vibrating rod is controlled through the rotating speed. The folding and unfolding assembly has a high-position state and a low-position state; when the retracting and releasing assembly is in a high-position state, the vibrating rod vibrates at a first frequency; and when the retracting and releasing assembly is in the low-position state, the vibrating rod vibrates at the second frequency. According to the method, high-frequency vibration is carried out in a high-position state to break and remove initial casting defects, bubbles are discharged to the maximum extent through high-frequency vibration, holes are prevented from being formed after hardening, low-frequency vibration is carried out in a low-position state to restrain segregation and layering, a vibration rod makes contact with a formwork or bottom-layer steel bars when sinking to the bottom, and the situation that aggregate collision energy can be amplified through high-frequency vibration is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of vibrating technology, and particularly relates to an adjustable concrete vibrating device. BACKGROUND

[0002] In the construction tools, especially in the concrete construction, vibrating is a key process for ensuring the compactness of concrete and eliminating air bubbles. The traditional handheld vibrating rod needs to be manually controlled, and has two defects:

[0003] High-frequency vibrating limitation: high frequency is needed for initial vibrating to fully remove air, but continuous high frequency easily leads to concrete segregation or aggregate sinking, especially forming a loose layer at the bottom of the structure;

[0004] Manual adjustment inefficiency: the operator needs to switch high and low frequency modes according to experience, which not only increases labor intensity, but also leads to uneven vibrating due to response lag, affecting the strength of the structure.

[0005] Although the existing automatic vibrating device can position the vibrating rod through a mechanical arm, the frequency adjustment and position change are separated, an additional sensor is needed to detect the position of the vibrating rod, and a separate control system is needed to switch the frequency, resulting in a complex structure, high failure rate, and a wire laying mechanism that only controls the position and cannot automatically reduce the frequency of the power system. It still needs to be manually adjusted when sinking.

[0006] Therefore, it is urgent to design an adjustable concrete vibrating device to solve the above problems. SUMMARY

[0007] The application aims to provide an adjustable concrete vibrating device, which has the advantages of maintaining high frequency for efficient vibrating in a high position state and low frequency vibrating in a low position state, avoiding concrete layering, and solving the problems in the background art.

[0008] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0009] An adjustable concrete vibrating device, comprising a vibrating rod connected with an output line, a retracting and releasing assembly, and an output assembly;

[0010] The retracting and releasing assembly is connected with the output line and is used for adjusting the position of the vibrating rod up and down; the output assembly is connected with the retracting and releasing assembly and controls the vibrating frequency of the vibrating rod through the rotating speed;

[0011] The retracting and releasing assembly has a high position state and a low position state; the output assembly has a first state and a second state;

[0012] When the retracting and releasing assembly is in the high position state, the output assembly is in the first state, the output line is released to a length L, and the vibrating rod vibrates at a first frequency;

[0013] When the winding and unwinding assembly is in the low position, the output assembly is in the second state, the output line is released to a length L, and the vibrating rod vibrates at a second frequency, L is greater than L, and the second frequency is lower than the first frequency.

[0014] Further, the winding and unwinding assembly comprises two first rotating rods, each of which is connected with a winding and unwinding roller, and the two winding and unwinding rollers clamp the output line and release or pull up the output line through forward rotation or reverse rotation of the two winding and unwinding rollers.

[0015] Further, each first rotating rod is fixedly connected with a spline, and the winding and unwinding roller is provided with a key groove, and the winding and unwinding roller is slidably connected with the spline on the first rotating rod through the key groove;

[0016] When the winding and unwinding assembly is in the high position, the key groove of the winding and unwinding roller is inserted with the spline of the first rotating rod, and the first rotating rod drives the winding and unwinding roller to rotate to release the output line and the vibrating rod;

[0017] When the winding and unwinding assembly is in the low position, the winding and unwinding roller slides in the first direction, the key groove of the winding and unwinding roller is separated from the spline of the first rotating rod, and the winding and unwinding roller stops rotating.

[0018] Further, the winding and unwinding assembly further comprises an electric push rod, the output end of the electric push rod is fixedly connected with a connecting rod, one end of the connecting rod away from the output end of the electric push rod is fixedly connected with a sleeve ring, the winding and unwinding roller is fixedly connected with a clamping sleeve, the sleeve ring is sleeved with the clamping sleeve, and the winding and unwinding assembly is switched between the high position and the low position through the opening and closing of the electric push rod.

[0019] Further, the output assembly comprises a belt and a driving block, the driving block is fixedly connected with the output end of the electric push rod, and the driving block drives the belt to move synchronously when the output end of the electric push rod moves;

[0020] When the output assembly is in the first state, the belt is in the first position, and the vibrating rod vibrates at the first frequency;

[0021] When the output assembly is in the second state, the belt is in the second position, and the vibrating rod vibrates at the second frequency.

[0022] Further, the output assembly further comprises a first taper roller and a second taper roller;

[0023] The first taper roller and the second taper roller are connected through the belt, and the large-diameter end positions of the first taper roller and the second taper roller are opposite;

[0024] When the belt is in the first position, the belt is sleeved on the small-diameter end of the first taper roller and the large-diameter end of the second taper roller;

[0025] When the belt is in the second position, the belt is sleeved on the large-diameter end of the first taper roller and the small-diameter end of the second taper roller.

[0026] Further, the first conical roller is fixedly connected with a second rotating rod, the first conical roller rotates around the second rotating rod, the second rotating rod provides rotating power, the second conical roller is fixedly connected with a third rotating rod, the second conical roller rotates around the third rotating rod, the third rotating rod is connected with the output line, and rotating power is transmitted to the vibrating rod through rotation of the third rotating rod.

[0027] Further, a through hole is formed in the driving block, the through hole is slidably connected with the belt, and when the output end of the electric push rod moves, the driving block drives the belt to move synchronously.

[0028] Further, the first conical roller and the second conical roller are both provided with baffle plates at two ends, so as to limit the position of the belt.

[0029] Further, the first conical roller and the second conical roller are both provided with baffle plates at two ends, so as to limit the position of the belt.

[0030] The present application has the following advantages: high-frequency vibration is carried out in the high position state to break the initial defects of pouring, high-frequency vibration maximizes bubble discharge, avoids the formation of holes after hardening, low-frequency vibration is carried out in the low position state to inhibit segregation and stratification, the vibrating rod contacts the formwork or the bottom layer of steel bars when sinking, and high-frequency vibration can avoid amplifying the collision energy of aggregates. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the vibrating device of the present application;

[0032] Figure 2 It is a schematic diagram of the cross-sectional structure of the vibrating device of the present application;

[0033] Figure 3 It is a schematic diagram of the structure of the retractable assembly of the present application;

[0034] Figure 4 It is a schematic diagram of the structure of the spline and the keyway of the present application;

[0035] Figure 5 It is a schematic diagram of the structure of the sleeve ring and the clamping sleeve of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of the output assembly of the present application Figure 1 ;

[0037] Figure 7 It is a schematic diagram of the structure of the output assembly of the present application Figure 2 ;

[0038] The figure mark description: 1, the shell; 2, the vibrating rod; 21, output line; 3, the retraction assembly; 31, the first rotating rod; 32, the retraction roller; 33, the second bevel gear; 34, the sleeve; 35, the spline; 36, the keyway; 4, the output assembly; 41, the third rotating rod; 42, the second conical roller; 43, the second rotating rod; 44, the first conical roller; 45, the first bevel gear; 46, the belt; 47, the baffle; 5, the electric push rod; 51, the connecting rod; 52, the collar; 53, the driving block; 6, the motor; 61, the third bevel gear. DETAILED DESCRIPTION

[0039] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] Those skilled in the art can understand that although some of the embodiments herein include certain features rather than other features included in other embodiments, the combination of features of different embodiments means to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0041] The following refers to the accompanying Figure 1 to the accompanying Figure 7 A concrete vibrating device is described, the concrete vibrating device comprises a shell 1, an output line 21 is arranged in the shell 1, the output line 21 is connected with a vibrating rod 2 at one end, the output line 21 can transmit rotary power to the vibrating rod 2, the output line 21 and the vibrating rod 2 are prior art, the output line 21 comprises an outer sleeve, a flexible shaft is arranged in the outer sleeve, the flexible shaft is connected with an output power source through a coupling at one end, the rotation of the output power source is transmitted to the input end of the flexible shaft through the coupling, the flexible shaft transmits the rotary power flexibly, bypasses a bending path, and reaches the output end of the flexible shaft, the vibrating rod 2 comprises a shell, an eccentric vibrator is arranged in the shell, the output end of the flexible shaft is connected to the eccentric vibrator in the vibrating rod 2, the eccentric vibrator rotates at high speed under the driving of the rotary power transmitted by the flexible shaft, generates a strong centrifugal force, and the centrifugal force makes the shell of the vibrating rod 2 vibrate at high frequency and is transmitted to the surrounding concrete.

[0042] The existing automatic vibrating device can position the vibrating rod 2 through the mechanical arm, but the frequency adjustment and the position change are separated, an additional sensor is needed to detect the position of the vibrating rod 2, and then a separate control system is needed to switch the frequency, resulting in a complex structure, high failure rate, and the release mechanism only controls the position and cannot automatically reduce the frequency of the power system in linkage, and the frequency still needs to be manually adjusted when sinking to the bottom.

[0043] Therefore, the housing 1 is provided with a winding and unwinding assembly 3, which can lower or pull up the output line 21 to change the position of the vibrating rod 2. The housing 1 is provided with an output assembly 4 connected with the output line 21. The output assembly 4 provides rotary power for the output line 21. The rotating speed of the output assembly 4 controls the vibrating frequency of the vibrating rod 2. The winding and unwinding assembly 3 has a high position state and a low position state. When the winding and unwinding assembly 3 is in the high position state, the output assembly 4 is in the first state. The output assembly 4 has a first state and a second state. The output line 21 is released to a length L1. The vibrating rod 2 vibrates at a first frequency. When the winding and unwinding assembly 3 is in the low position state, the output assembly 4 is in the second state. The output line 21 is released to a length L2. The vibrating rod 2 vibrates at a second frequency. L2 is greater than L1. The second frequency is lower than the first frequency. Specifically, L2 and L1 are the release lengths of the output line 21. The length L1 is the distance when the output line 21 is not sunk and the output line 21 is not released to the maximum length. The length L2 is the distance when the output line 21 is sunk or the output line 21 is released to the maximum length. The first frequency is high-frequency vibration. The second frequency is low-frequency vibration.

[0044] Concrete is a non-homogeneous material composed of cement paste, aggregate and bubbles. The core goal of vibration is to remove bubbles and uniform compaction. Through high-frequency vibration in the high position state, the initial defects of pouring are broken. The air content of newly poured concrete is 5%-8%. High-frequency vibration maximizes bubble removal, avoiding the formation of holes after hardening. When the vibrating rod 2 descends, it needs to cut through the surface layer of concrete with poor fluidity. High-frequency vibration produces shear thinning effect, reducing the penetration resistance by 60%. Through low-frequency vibration in the low position state, segregation and stratification are inhibited. When the vibrating rod 2 sinks to the bottom, it contacts the formwork or the bottom layer of reinforcement, avoiding the amplification of aggregate collision energy caused by high-frequency vibration. The sinking position is close to the rigid and flexible boundary. High-frequency standing wave reflection can cause energy superposition, easily causing formwork displacement or steel reinforcement grip force to decrease. Therefore, low-frequency vibration is needed in the low position state.

[0045] The winding and unwinding assembly 3 includes two first rotating rods 31. Each first rotating rod 31 is connected with a winding and unwinding roller 32. The two winding and unwinding rollers 32 clamp the output line 21 and lower or pull up the output line 21 through the forward rotation or reverse rotation of the two winding and unwinding rollers 32. The two winding and unwinding rollers 32 oppositely extrude the output line 21, generating a static friction force of >500N, which is more than 3 times of the single roller structure.

[0046] Preferably, anti-slip patterns are formed on the two winding and unwinding rollers 32 to further increase the friction force with the output line 21.

[0047] Further, each first rotating rod 31 is fixedly connected with a spline 35, and the take-up and pay-off roller 32 is provided with a key groove 36, and the take-up and pay-off roller 32 is slidably connected with the spline 35 on the first rotating rod 31 through the key groove 36;

[0048] When the take-up and pay-off assembly 3 is in the high position, the key groove 36 of the take-up and pay-off roller 32 is inserted with the spline 35 of the first rotating rod 31, and the first rotating rod 31 drives the take-up and pay-off roller 32 to rotate, so as to lower the output line 21 and the vibrating rod 2;

[0049] When the take-up and pay-off assembly 3 is in the low position, the take-up and pay-off roller 32 slides in the first direction A, and the key groove 36 of the take-up and pay-off roller 32 is separated from the spline 35 of the first rotating rod 31, so that the take-up and pay-off roller 32 stops rotating when the first rotating rod 31 rotates, so as to stop lowering the output line 21 and the vibrating rod 2.

[0050] For example, the output assembly 4 is located at the end of the shell 1B, and the take-up and pay-off assembly 3 is located at the end of the shell 1C, and when moving from the end of the shell 1B to the end of the shell 1C, it is the first direction A.

[0051] The rotating encoder connected to any one of the first rotating rod 31 or the take-up and pay-off roller 32 detects the release length of the output line 21, and when the rotating encoder detects that the output line 21 is released to the maximum length or the release length of the output line 21 is equal to the required vibrating depth, the rotating encoder sends a stop signal to the controller, and then the key groove 36 of the take-up and pay-off roller 32 is separated from the spline 35 of the first rotating rod 31. Specifically, according to the required vibrating depth, the controller presets the required release length of the output line 21, and it should be noted that the preset release length of the output line 21 cannot exceed the maximum release length of the output line 21. If the preset release length of the output line 21 exceeds the maximum release length of the output line 21, the preset release length of the output line 21 is the maximum release length of the output line 21. Then the rotating encoder rotates with the first rotating rod 31, and the rotating encoder counts the A / B phase pulses, and calculates the current length L by accumulating the pulse number x ΔL. When the length L is equal to the preset release length of the output line 21, the rotating encoder sends a stop signal, and the controller drives the output end of the electric push rod 5 to slide in the first direction A.

[0052] Before vibrating, the pouring depth is selected to match the length of the output line 21. For example, if the pouring depth is the same as the length of the output line 21, low-frequency vibration in the low position is used to suppress segregation and stratification. If the pouring depth is slightly larger than the length of the output line 21, low-frequency vibration in the low position is used to improve the penetration of the vibrating rod to compensate for the insufficient length of the output line 21.

[0053] The shell 1 is fixedly connected with an electric push rod 5, the output end of the electric push rod 5 is fixedly connected with a connecting rod 51, one end of the connecting rod 51 away from the output end of the electric push rod 5 is fixedly connected with a sleeve ring 52, the sleeve ring 52 is sleeved with a sleeve 34 fixedly connected on the take-up and pay-off roller 32, after the rotary encoder sends a stop signal to the controller, the controller controls the output end of the electric push rod 5 to move, the key groove 36 of the take-up and pay-off roller 32 is separated from the spline 35 of the first rotating rod 31, by setting the sleeve ring 52 and the sleeve 34, the sleeve ring 52 does not rotate when the take-up and pay-off roller 32 rotates.

[0054] The output assembly 4 includes a second rotating rod 43 and a third rotating rod 41, the second rotating rod 43 provides rotating power, the first taper roller 44 is fixedly connected on the second rotating rod 43, the second taper roller 42 is fixedly connected on the third rotating rod 41, the first taper roller 44 and the second taper roller 42 are connected through a belt 46, the third rotating rod 41 is connected with the output line 21, the third rotating rod 41 provides rotating power to the output line 21, specifically, the first taper roller 44 and the second taper roller 42 are both provided with a large diameter end and a small diameter end, the large diameter end φ120mm and the small diameter end φ40mm of the first taper roller 44 and the second taper roller 42, the speed ratio is 3:1, the frequency can jump between 200Hz high frequency and 65Hz low frequency; when the take-up and pay-off assembly 3 is in a high position state, the belt 46 is located at the large diameter end of the first taper roller 44 and the small diameter end of the second taper roller 42, so that the rotating speed of the third rotating rod 41 is faster, thereby the vibrating rod 2 vibrates at high frequency; when the take-up and pay-off assembly 3 is in a low position state, the belt 46 slides to the first direction A until the belt 46 is located at the small diameter end of the first taper roller 44 and the large diameter end of the second taper roller 42, so that the rotating speed of the third rotating rod 41 gradually slows down, the vibrating rod 2 changes from high frequency vibration to low frequency vibration, specifically, the first taper roller 44 and the second taper roller 42 are opposite to each other.

[0055] Preferably, the surface of the first taper roller 44 and the second taper roller 42 is knurled, so that the friction coefficient of the belt 46 reaches 0.4.

[0056] The output end of the electric push rod 5 is connected with a driving block 53, the driving block 53 is provided with a through hole, the through hole is slidably connected with the belt 46, when the output end of the electric push rod 5 moves, the driving block 53 drives the belt 46 to move synchronously, specifically, the through hole is gap-fitted with the belt 46, the belt 46 can slide relative to the through hole, and it is ensured that the push and pull are not stuck.

[0057] And the same electric push rod 5 simultaneously completes the stop of the take-up and pay-off roller 32 and the reduction of the rotating speed of the third rotating rod 41, thereby saving the cost of independent driving.

[0058] The two ends of the first conical roller 44 and the second conical roller 42 are provided with baffles 47 to limit the position of the belt 46, specifically, the height of the baffle 47 is 5mm higher than the thickness of the belt 46, the belt 46 can only move within the axial ±30mm, and the high-speed and low-speed gears are accurately positioned.

[0059] Preferably, the first conical gear 45 is fixedly connected to the second rotating rod 43, the second conical gear 33 is fixedly connected to any one of the first rotating rods 31, the motor 6 is fixedly connected in the shell 1, the output end of the motor 6 is fixedly connected with the third conical gear 61, and the third conical gear 61 is engaged with the first conical gear 45 and the second conical gear 33, so that only one motor 6 is needed to drive the device, the weight of the device is greatly reduced, and in other embodiments of the application, two motors 6 can also be provided, the output end of one motor 6 is fixedly connected with any one of the first rotating rods 31 to drive the first rotating rod 31 to rotate, and the output end of the other motor 6 is fixedly connected with the second rotating rod 43 to drive the second rotating rod 43 to rotate.

[0060] When the retractable assembly 3 is in the high position, the key groove 36 of the retractable roller 32 is inserted with the spline 35 of the first rotating rod 31, the first rotating rod 31 drives the retractable roller 32 to rotate to lower the output line 21 and the vibrating rod 2, and at this time, the belt 46 is located at the large-diameter end of the first conical roller 44 and the small-diameter end of the second conical roller 42, so that the rotating speed of the third rotating rod 41 is relatively fast, and the vibrating rod 2 is high-frequency vibrated.

[0061] When the retractable assembly 3 is in the low position, the rotary encoder detects that the output line 21 reaches the preset length, sends a pulse signal to the controller, and the controller starts the electric push rod 5, the output end of the electric push rod 5 pushes the sleeve ring 52 to slide in the first direction A, the retractable roller 32 synchronously slides in the first direction A, the key groove 36 of the retractable roller 32 is separated from the spline 35 of the first rotating rod 31, so that the retractable roller 32 stops rotating, and the output end of the electric push rod 5 synchronously pushes the driving block 53 to slide in the first direction A, so that the belt 46 slides in the first direction A until the belt 46 is located at the small-diameter end of the first conical roller 44 and the large-diameter end of the second conical roller 42, so that the rotating speed of the third rotating rod 41 gradually slows down, and the vibrating rod 2 changes from high-frequency vibration to low-frequency vibration.

[0062] Obviously, the above embodiments of the application are only examples for clearly illustrating the application, and are not intended to limit the implementation modes of the application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the implementation modes are not enumerated. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the claims of the application.

Claims

1. An adjustable concrete vibrating device, characterized in that: It comprises a vibrating rod (2) connected to an output line (21), a retractable assembly (3) and an output assembly (4); The retractable assembly (3) is connected to the output line (21) and is used to adjust the position of the vibrating rod (2) up and down; the output assembly (4) is connected to the retractable assembly (3) and controls the vibration frequency of the vibrating rod (2) through the rotation speed; The retractable component (3) has a high position state and a low position state; the output component (4) has a first state and a second state; When the retractable assembly (3) is in a high position, the output assembly (4) is in a first state, the output line (21) is released to a length L1, and the vibrating rod (2) vibrates at a first frequency; When the retractable assembly (3) is in a low position, the output assembly (4) is in a second state, the output line (21) is released to a length L2, and the vibrating rod (2) vibrates at a second frequency, wherein L2 is greater than L1 and the second frequency is lower than the first frequency.

2. The adjustable concrete vibrating device according to claim 1, characterized in that: The retractable assembly (3) comprises two first rotating rods (31), each of which is connected to a retractable roller (32). The two retractable rollers (32) clamp the output line (21), and the output line (21) is lowered or pulled up by the forward or reverse rotation of the two retractable rollers (32).

3. The adjustable concrete vibrating device according to claim 2, characterized in that: Each of the first rotating rods (31) is fixedly connected to a spline (35), a key slot (36) is provided on the retractable roller (32), and the retractable roller (32) is slidably connected to the spline (35) on the first rotating rod (31) via the key slot (36); When the retractable assembly (3) is in a high position, the keyway (36) of the retractable roller (32) is plugged into the spline (35) of the first rotating rod (31), and the first rotating rod (31) drives the retractable roller (32) to rotate, thereby lowering the output line (21) and the vibrating rod (2); When the retractable assembly (3) is in a low position, the retractable roller (32) slides in a first direction, the keyway (36) of the retractable roller (32) is separated from the spline (35) of the first rotating rod (31), and the retractable roller (32) stops rotating.

4. The adjustable concrete vibrating device according to claim 3, characterized in that: The utility model further comprises an electric push rod (5), wherein the output end of the electric push rod (5) is fixedly connected to a connecting rod (51), and one end of the connecting rod (51) away from the output end of the electric push rod (5) is fixedly connected to a sleeve (52), and the retracting roller (32) is fixedly connected to a clamping sleeve (34), and the sleeve (52) is sleeved with the clamping sleeve (34), and the retracting assembly (3) is switched between a high position state and a low position state by opening and closing the electric push rod (5).

5. The adjustable concrete vibrating device according to claim 4, characterized in that: The output assembly (4) includes a belt (46) and a drive block (53), wherein the drive block (53) is fixedly connected to the output end of the electric push rod (5), and when the output end of the electric push rod (5) moves, the drive block (53) drives the belt (46) to move synchronously; When the output assembly (4) is in a first state, the belt (46) is in a first position, and the vibrating rod (2) vibrates at a first frequency; When the output assembly (4) is in the second state, the belt (46) is in the second position, and the vibrating rod (2) vibrates at a second frequency.

6. The adjustable concrete vibrating device according to claim 5, characterized in that: The output assembly (4) further includes a first tapered roller (44) and a second tapered roller (42); The first tapered roller (44) and the second tapered roller (42) are connected via a belt (46), and the large diameter ends of the first tapered roller (44) and the second tapered roller (42) are positioned opposite to each other; When the belt (46) is located at the first position, it is sleeved on the small-diameter end of the first tapered roller (44) and the large-diameter end of the second tapered roller (42); When the belt (46) is located at the second position, it is sleeved on the large-diameter end of the first tapered roller (44) and the small-diameter end of the second tapered roller (42).

7. The adjustable concrete vibrating device according to claim 6, characterized in that: A second rotating rod (43) is fixedly connected to the first tapered roller (44), and the first tapered roller (44) and the second rotating rod (43) rotate with the center of a circle. The second rotating rod (43) provides rotational power. A third rotating rod (41) is fixedly connected to the second tapered roller (42), and the second tapered roller (42) rotates with the third rotating rod (41) as the center of a circle. The third rotating rod (41) is connected to the output line (21) so that the rotational power is transmitted to the vibrating rod (2) through the rotation of the third rotating rod (41).

8. The adjustable concrete vibrating device according to claim 5, characterized in that: A through hole is provided on the driving block (53), and the through hole is slidably connected to the belt (46). When the output end of the electric push rod (5) moves, the driving block (53) drives the belt (46) to move synchronously.

9. The adjustable concrete vibrating device according to claim 6, characterized in that: Both ends of the first tapered roller (44) and the second tapered roller (42) are provided with baffles (47) to limit the position of the belt (46).

10. The adjustable concrete vibrating device according to claim 7, characterized in that: The motor (6) is further comprised, wherein the output end of the motor (6) is fixedly connected to a third bevel gear (61), the second rotating rod (43) is fixedly connected to a first bevel gear (45), and any one of the first rotating rods (31) is fixedly connected to a second bevel gear (33), and the third bevel gear (61) is meshed with the first bevel gear (45) and the second bevel gear (33).

Images