Concrete vibrating device and vibrating method

Abstract

The application relates to the technical field of concrete pouring and vibrating, and provides a concrete vibrating device and a vibrating method, which belong to the technical field of concrete pouring and vibrating. The concrete vibrating device comprises a needle disc, a needle shooting device and a needle retreating device. The needle disc is provided with steel needles and arranged outside a pouring formwork. The needle shooting device is connected with the needle disc and used for driving the steel needles to advance to pierce the pouring formwork and form exhaust holes on the pouring formwork. The needle retreating device is connected with the needle disc and used for driving the steel needles to retreat to make the exhaust holes communicate with a pouring cavity. The vibrating motor is connected with the needle disc and used for driving the steel needles on the needle disc to vibrate to realize the vibrating of the concrete in the pouring cavity. The steel needles form the exhaust holes on the pouring formwork. While the vibrating motor drives the steel needles to vibrate to realize the vibrating of the concrete, the air in the concrete is discharged through the exhaust holes, the tiny air bubbles in the concrete can be effectively eliminated, and the pouring quality of the concrete is improved. The problems of the difficulty in the vibrating of the concrete below the embedded component and the poor forming quality are solved.

Description

Technical Field

[0001] This invention belongs to the field of concrete pouring and vibration technology, specifically relating to a concrete vibration device and vibration method. Background Technology

[0002] Currently, during cast-in-place construction of building structures, in addition to pouring concrete, vibratory equipment is needed to compact the concrete to improve the quality of the pouring. However, in some building structures with embedded components, the liquid concrete beneath the embedded components is prone to forming high-pressure air bubbles due to compression. Existing vibratory rods are insufficient to compact the concrete beneath the embedded components, resulting in poor concrete quality. Taking the cast-in-place construction of a shear wall with embedded sleeves as an example, before pouring concrete, embedded holes need to be made on the side formwork surface of the shear wall, and the embedded sleeves are inserted into the embedded holes before pouring the shear wall concrete. However, because the compression of the liquid concrete beneath the sleeves easily forms high-pressure air bubbles, and existing vibratory rods are inserted into the concrete in the pouring cavity from top to bottom, the vibration effect on the high-pressure air beneath the sleeves is poor, making it difficult to compact the concrete beneath the sleeves, resulting in poor concrete quality and a high probability of water seepage. Summary of the Invention

[0003] To address the problems in the prior art, this application proposes a concrete vibration device and method, which ensures the molding quality of the poured concrete by drilling holes in the casting template and vibrating to release air.

[0004] In a first aspect, the present invention provides a concrete vibration device, comprising:

[0005] A needle plate, on which one or more steel needles are provided, is located on the outside of a casting template, wherein the inside of the casting template is a casting cavity into which concrete is poured.

[0006] A needle-shooting device, connected to the needle plate, is used to drive the steel needle forward to pierce the casting template, thereby forming an air vent on the casting template;

[0007] A needle retraction device, connected to the needle plate, is used to drive the steel needles backward, so that the vent hole connects to the casting cavity; and

[0008] A vibratory motor, connected to the needle plate, is used to drive the steel needles on the needle plate to vibrate in order to vibrate the concrete in the pouring cavity.

[0009] The concrete vibrating device further comprises a device housing; the needle shooting device comprises a fixed disc and a first spring; the fixed disc is arranged at the side of the needle disc opposite to the steel needles and is fixedly connected with the device housing; the first spring is arranged between the fixed disc and the needle disc, and the two ends of the first spring are respectively connected with the fixed disc and the needle disc, and the first spring is reset to drive the steel needles to advance and pierce the pouring formwork;

[0010] The needle withdrawing device comprises a transmission rod and a needle withdrawing drive device; one end of the transmission rod is connected with the needle disc, the other end passes through the fixed disc and is connected with the needle withdrawing drive device; the needle withdrawing drive device drives the transmission rod to move to pull the needle disc to the fixed disc and synchronously compress the first spring.

[0011] Further, the needle withdrawing drive device comprises a back gear and a drive assembly; the shaft center of the back gear is provided with a threaded hole, the transmission rod passes through the threaded hole, and the transmission rod is provided with a threaded segment threadedly matched with the threaded hole; the drive assembly is connected with the back gear for driving the back gear to rotate; the concrete vibrating device further comprises a needle shooting trigger device; the needle shooting trigger device is used for driving the back gear to separate from the transmission rod to release the matching of the threaded hole and the threaded segment.

[0012] Further, the back gear comprises a first half circular gear and a second half circular gear which are symmetrically clamped at the two sides of the transmission rod, and the radial end faces of the first half circular gear and the second half circular gear are spliced to form a complete circular back gear; the back gear further comprises a second spring connected with the first half circular gear and the second half circular gear at the two ends respectively, and the second spring tightens the first half circular gear and the second half circular gear to make the radial end faces thereof abut tightly; the needle shooting trigger device drives the first half circular gear and the second half circular gear to move away from each other to separate the back gear and the transmission rod.

[0013] Further, the edges where the radial end faces of the first half circular gear and / or the second half circular gear intersect with the axial end faces are provided with grooves; the needle shooting trigger device comprises a trigger motor, a trigger disc, a transmission rod and a triangular wedge; the trigger disc is arranged at the side of the back gear opposite to the fixed disc; the transmission rod is arranged between the trigger disc and the back gear, one end of the transmission rod is fixed with the trigger disc, and the other end of the transmission rod is connected with the triangular wedge; the triangular wedge is arranged opposite to the grooves; the trigger motor is arranged at the side of the trigger disc opposite to the back gear to drive the trigger disc to move close to or away from the back gear.

[0014] Further, the trigger disc comprises a trigger gear and a sleeve; the sleeve is fixedly connected with the device housing, the transmission rod passes through the sleeve, and the trigger gear movably fits on the sleeve in opposite rotation; the axial end surface of the trigger gear opposite to the back-off gear is provided with a concentric annular step groove; the output end of the trigger motor is connected with a trigger rod, one end of the trigger rod is located in the annular step groove, and the trigger rod is provided with an anti-disengagement part; the drive assembly is further connected with the trigger gear to drive the back-off gear and the trigger gear to synchronously rotate; the needle shooting trigger device further comprises a third spring connected with the trigger gear, the first semicircular gear and the second semicircular gear.

[0015] Under the axial traction of the trigger motor, the trigger rod is axially displaced, the trigger gear is pulled close to or away from the back-off gear, the trigger gear can normally rotate without being limited by the trigger rod by setting the anti-disengagement part at one end of the trigger rod and in the annular step groove of the trigger gear. The synchronous rotation of the back-off gear and the trigger gear is realized by the drive assembly, so that the triangular wedge block can always be aligned with the groove, and the first semicircular gear and the second semicircular gear can be separated smoothly by the needle shooting trigger device. The trigger gear and the back-off gear separated from the drive assembly are connected by the third spring, so that the trigger gear and the back-off gear are pulled again by the trigger rod and the third spring to be respectively matched with the drive assembly, thereby ensuring the normal operation of the needle retraction device.

[0016] Further, the concrete vibrating device further comprises a suction cup; the suction cup surrounds the outside of the needle disc, and the suction cup is connected with the vibrating motor.

[0017] By connecting the suction cup with the vibrating motor, the concrete vibrating device is fixed on the outside of the pouring formwork by the suction cup, so that the steel needle vibration can be used to vibrate the concrete, and the pouring formwork can be vibrated by the suction cup to improve the local concrete vibrating effect.

[0018] In the second aspect, the application further provides a concrete vibrating method, comprising the following steps:

[0019] Placing the needle disc provided with one or more steel needles on the outside of the pouring formwork;

[0020] Using the needle shooting device connected with the needle disc to drive the steel needles to advance to pierce the pouring formwork, so that the exhaust holes are formed on the pouring formwork;

[0021] Using the needle retraction device connected with the needle disc to drive the steel needles to retreat to make the exhaust holes communicate with the pouring cavity, wherein the pouring cavity is a space on the inside of the pouring formwork where the concrete is poured;

[0022] A vibratory motor connected to the needle disc drives the steel needles on the needle disc to vibrate, thereby vibrating the concrete in the pouring cavity and allowing gas in the concrete to escape from the vent. Before the vibratory motor drives the steel needles on the needle disc to vibrate, the following steps are also included:

[0023] The needle retraction device drives the steel needle to retract to the outside of the casting template, moves the steel needle to change the position of the steel needle relative to the casting template, and misaligns the steel needle with the vent hole; the needle injection device then drives the steel needle forward again to pierce the casting template.

[0024] The beneficial effects of this invention are as follows: By setting steel needles on a needle plate and using a needle-shooting device to drive the steel needles forward to pierce the casting template, air vents are formed on the casting template; a needle-retracting device drives the steel needles backward, allowing the air vents to connect to the casting cavity; and a vibrating motor drives the steel needles to vibrate, achieving concrete compaction while air in the concrete is discharged through the air vents, effectively eliminating tiny air bubbles in the concrete and improving the quality of concrete pouring. This solves the problem of difficult concrete compaction and poor molding quality under embedded components. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural schematic diagram of the concrete vibrating device of the present invention.

[0026] Figure 2 This is a partially exploded structural diagram of the needle firing device, needle retraction device, and needle excitation device of the concrete vibrating apparatus of the present invention.

[0027] Figure 3 This is an exploded structural diagram of the drive assembly of the retraction device of the concrete vibrating device of the present invention.

[0028] Figure 4 for Figure 2 A schematic diagram of the excitation disc, force transmission rod, and triangular wedge block of the central needle excitation device from the left side.

[0029] Figure 5 for Figure 2 A schematic diagram of the structure of the retracting gear, the excitation gear, and the excitation rod.

[0030] In the picture:

[0031] 10-Device housing; 11-Retracting channel; 12-Vibration switch; 13-Needle retraction switch; 14-Needle injection switch; 15-Pressure sensor;

[0032] 20 - Needle plate; 21 - Steel needle;

[0033] 30 - Needle firing device; 31 - Fixed plate; 32 - First spring;

[0034] 40 - Needle retraction device; 41 - Transmission rod; 42 - Retraction gear; 421 - First semi-circular gear; 422 - Second semi-circular gear; 423 - Second spring; 424 - Groove; 43 - Drive motor; 44 - Drive shaft; 45 - Driving gear; 46 - Driven gear; 47 - Connecting shaft; 48 - First transmission gear; 49 - Second transmission gear;

[0035] 50-Vibrating motor;

[0036] 60-Injection needle excitation device; 61-Excitation motor; 62-Excitation disc; 621-Excitation gear; 622-Sleeve; 623-Annular stepped groove; 63-Force transmission rod; 64-Triangular wedge; 65-Excitation rod; 651-Anti-detachment part; 66-Third spring;

[0037] 70 - Suction cup. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-5 The concrete vibrating device shown includes a device housing 10, a needle plate 20, a needle firing device 30, a needle retraction device 40, a vibrating motor 50, and a needle firing activation device 60.

[0040] The needle plate 20 is provided with one or more steel needles 21, and the multiple steel needles 21 are distributed in parallel. The needle plate 20 is located on the outside of the casting template, wherein the inside of the casting template is a casting cavity into which concrete is poured.

[0041] like Figure 2 As shown, the needle plate 20 has a circular structure with a through hole at its center, and three steel needles 21 are evenly arranged along the circumference of the needle plate 20. More steel needles 21 can be arranged on the needle plate 20. The three steel needles 21 on the needle plate 20 may be of the same length or of different lengths. The front end of the steel needle 21 is a spike, and the rear end of the steel needle 21 is a tail end, which is fixedly connected to the needle plate 20, and the connection method can be welding. (See attached diagram) Figure 1 For example, the left end of the steel needle 21 is its front end, that is, the pointed end of the steel needle 21, and the right end of the steel needle 21 is its tail end. The steel needle 21 has a conical structure. The closer it is to the pointed end, the smaller the cross-sectional diameter is, and the closer it is to the tail end, the larger the cross-sectional diameter is.

[0042] The needle shooting device 30 is connected with the needle disc 20, and is used to drive the steel needle 21 to advance to pierce the pouring formwork to form the exhaust hole on the pouring formwork. The needle shooting device 30 applies force on the steel needle 21 or the needle disc 20 to make the steel needle 21 pierce the pouring formwork. Since the steel needle 21 needs to pierce the pouring formwork, the length of the steel needle 21 should be greater than the thickness of the pouring formwork. After the steel needle 21 pierces the pouring formwork, the exhaust hole is formed on the pouring formwork, but the exhaust hole cannot exhaust the gas since the steel needle 21 blocks the exhaust hole at this time.

[0043] The needle withdrawing device 40 is connected with the needle disc 20, and is used to drive the steel needle 21 to retreat to make the exhaust hole communicate with the pouring cavity. The needle withdrawing device 40 applies force on the steel needle 21 or the needle disc 20 to make the steel needle 21 retreat. The force applied by the needle withdrawing device 40 is opposite to the force applied by the needle shooting device 30, so that the steel needle 21 can be driven to retreat. Figure 1 For example, the needle shooting device 30 applies left force or thrust force to make the steel needle 21 move left or advance. The needle withdrawing device 40 applies right force or pulling force to make the steel needle 21 move right or retreat.

[0044] Since the steel needle 21 is in a conical structure, the diameter of the exhaust hole formed on the pouring formwork by the steel needle 21 continuously expands during the advance of the steel needle 21. During the retreat of the steel needle 21, there is a gap between the side wall of the steel needle 21 and the hole wall of the exhaust hole, and the gap gradually expands with the retreat of the steel needle 21 until the steel needle 21 completely exits from the exhaust hole.

[0045] The vibrating motor 50 is connected with the needle disc 20, and is used to drive the steel needle 21 on the needle disc 20 to vibrate to realize the vibration of the concrete in the pouring cavity. The vibrating motor 50 is connected with the needle disc 20 through the vibration transmission rod, and transmits the vibration to the needle disc 20 through the transmission rod. The vibrating motor 50 drives the needle disc 20 to vibrate, and the vibration is transmitted to the steel needle 21. The steel needle 21 transmits the vibration to the concrete in the pouring cavity to realize the vibration of the concrete.

[0046] There are various methods for the concrete vibrating device to realize the vibration of the concrete:

[0047] The first method is to use the needle shooting device 30 to drive the steel needle 21 to advance to pierce the pouring formwork to form one or more exhaust holes on the pouring formwork. The needle withdrawing device 40 is used to drive the steel needle 21 to retreat to make the side wall of the steel needle 21 keep a gap with the hole wall of the exhaust hole. The gap realizes the communication between the pouring cavity on the inner side of the pouring formwork and the atmosphere on the outer side of the pouring formwork. In this state, a part of the steel needle 21 is still inserted into the pouring cavity. The vibrating motor 50 is started to transmit the vibration to the pouring cavity through the steel needle 21 to realize the vibration of the concrete in the pouring cavity. The gas generated by the vibration and breakage of the tiny bubbles is discharged from the gap between the steel needle 21 and the hole wall of the exhaust hole to realize the vibration and exhaust of the concrete. After the vibration and exhaust of the concrete are completed, the steel needle 21 is withdrawn, and the concrete self-flowing closes the exhaust hole.

[0048] The second method is to drive the steel needle 21 to advance and pierce the pouring formwork by using the needle shooting device 30, so as to form one or more exhaust holes on the pouring formwork. The steel needle 21 is driven to retreat by using the needle withdrawing device 40, so that the steel needle 21 is completely withdrawn from the exhaust hole, the position of the steel needle 21 is changed, the steel needle 21 is driven to advance again by using the needle shooting device 30 to pierce the pouring formwork, in this state, the steel needle 21 is inserted into the pouring cavity, and the side wall of the steel needle 21 is tightly attached to the pouring formwork. The vibrating motor 50 is started to transmit vibration to the pouring cavity mainly by the steel needle 21 and secondarily by the pouring formwork, so as to realize the vibration and compaction of the concrete in the pouring cavity. The gas generated by the vibration and compaction of the micro-bubbles is discharged from the previous exhaust hole, so as to realize the vibration and compaction of the concrete. After the vibration and compaction of the concrete is completed, the steel needle 21 is withdrawn, and the concrete self-flowing closes the exhaust hole.

[0049] The third method is that the needle disc 20 is provided with two lengths of steel needles 21, which are divided into long needles and short needles according to different lengths, and the long needles and the short needles are parallel and distributed at intervals. The length difference between the sharp end of the long needle and the sharp end of the short needle is greater than the thickness of the pouring formwork. The needle disc 20 is driven to advance by using the needle shooting device 30, so that the long needles and the short needles all pierce the pouring formwork. The needle disc 20 is driven to retreat by using the needle withdrawing device 40, so that the short needles are separated from the pouring formwork. A part of the long needles is inserted into the concrete in the pouring cavity. The vibrating motor 50 is started to vibrate the concrete in the pouring cavity by using the long needles. The gas in the concrete is discharged from the exhaust hole left by the short needles on the pouring formwork, so as to realize the vibration and compaction of the concrete. After the vibration and compaction of the concrete is completed, the long needles are withdrawn, and the concrete self-flowing closes the exhaust hole.

[0050] The force for driving the steel needle 21 to advance by using the needle shooting device 30 and the force for driving the steel needle 21 to retreat by using the needle withdrawing device 40 can be realized by mechanical movement of a mechanical device or manually realized by a hand.

[0051] The concrete vibrating device further comprises a device housing 10; the needle shooting device 30, the needle withdrawing device 40, the vibrating motor 50 and the needle shooting triggering device 60 are all arranged in the device housing 10. In order to facilitate operation, the device housing 10 comprises a handle structure. When the mechanical movement of the mechanical device is used to realize the advance or retreat of the steel needle 21, a switch and a power supply electrically connected with the mechanical device are arranged at the handle structure. The power supply can adopt a wired power supply or a battery to supply power to the concrete vibrating device.

[0052] As Figure 1The concrete vibrating device also comprises a suction cup 70. The suction cup 70 is arranged outside the needle disc 20 and is connected with the vibrating motor 50. The suction cup 70 is fixedly arranged at the front end of the device housing 10. The suction cup 70 is made of rubber, the rear end thereof is in a cylindrical structure and is fixedly connected with the device housing 10, and the front end thereof is in a horn structure and is used for abutting against the pouring formwork. The suction cup 70 does not necessarily need to be fixedly connected with the pouring formwork, and it also has the function of transmitting vibration to the pouring formwork, so that the pouring formwork within a certain range around the exhaust hole also vibrates, thereby improving the vibrating effect. In addition, the suction cup 70 does not necessarily need to be made of soft material, and it can be made of hard material and can be replaced by a positioning disc. In some embodiments, the concrete vibrating device is not provided with the suction cup 70 but is provided with the positioning disc. The positioning disc is in a cylindrical or conical barrel structure, is also arranged outside the needle disc 20, and has the same shape as the suction cup 70. The rear end of the positioning disc is fixedly connected with the device housing 10 and is connected with the vibrating motor 50. The front end of the positioning disc is in a horn structure, and the plane where the front end is located is in the same plane as the pointed end of the steel needle 21 and is perpendicular to the length direction of the steel needle 21. Therefore, when the front end of the positioning disc abuts against the pouring formwork, the steel needle 21 is perpendicular to the pouring formwork, and the pointed end of the steel needle 21 is close to the pouring formwork. Figure 1 The suction cup 70 is shown in the drawings.

[0053] The needle shooting device 30 comprises a fixing disc 31 and a first spring 32. The fixing disc 31 is arranged at the side of the needle disc 20 which is opposite to the steel needle 21 and is fixedly connected with the device housing 10. The first spring 32 is arranged between the fixing disc 31 and the needle disc 20, and the two ends of the first spring 32 are respectively connected with the fixing disc 31 and the needle disc 20. The first spring 32 is reset to drive the steel needle 21 to advance and pierce the pouring formwork.

[0054] The needle shooting device 30 comprises a fixing disc 31 and a first spring 32. The fixing disc 31 is arranged at the side of the needle disc 20 which is opposite to the steel needle 21 and is fixedly connected with the device housing 10. The first spring 32 is arranged between the fixing disc 31 and the needle disc 20, and the two ends of the first spring 32 are respectively connected with the fixing disc 31 and the needle disc 20. The first spring 32 is reset to drive the steel needle 21 to advance and pierce the pouring formwork. Figure 1 , 2 The first spring 32 in the embodiment is provided with three first springs 32. The three first springs 32 are uniformly distributed along the circumference of the fixing disc 31. The fixing disc 31 has a structure similar to that of the needle disc 20 and is also provided with a through hole at the center. In the embodiment, the force for driving the steel needle 21 to advance is provided by the first spring 32. The needle disc 20 can be manually or by using a mechanical device to move towards the fixing disc 31, so that the first spring 32 is compressed and deformed. When the force for moving the needle disc 20 towards the fixing disc 31 is removed, the first spring 32 is reset to push the needle disc 20 to advance. Under the elastic force of the first spring 32, the needle disc 20 is ejected forward, and the front end of the needle disc 20 is provided with the steel needle 21, so that the steel needle 21 pierces the pouring formwork.

[0055] In order to improve the working efficiency and the piercing effect, the mechanical device is used to drive the needle disc 20 to move towards the fixing disc 31 and to synchronously compress the first spring 32 in the embodiment. The mechanical device comprises the following needle retracting device 40.

[0056] The needle withdrawing device 40 comprises a transmission rod 41 and a needle withdrawing drive device; one end of the transmission rod 41 is connected with the needle disc 20, and the other end passes through the fixed disc 31 and is connected with the needle withdrawing drive device; the needle withdrawing drive device drives the transmission rod 41 to move to pull the needle disc 20 to approach the fixed disc 31, and simultaneously compresses the first spring 32.

[0057] The center of the needle disc 20 and the fixed disc 31 is provided with a through hole, and the through holes are coaxial, so the through holes are concentric; the front end of the transmission rod 41 passes through the through hole of the needle disc 20 and is located at the front end of the needle disc 20, and is provided with a limiting piece. When the transmission rod 41 is pulled backward, the needle disc 20 is pulled backward under the action of the limiting piece. When the first spring 32 is reset, the needle disc 20 advances, and the limiting piece prevents the needle disc 20 from being separated from the transmission rod 41. The limiting piece can be a nut which is threadedly connected with the transmission rod 41, and the position of the nut can be adjusted to adjust the position of the needle disc 20 on the transmission rod 41.

[0058] Similarly, the rear end of the transmission rod 41 passes through the through hole of the fixed disc 31, so that the transmission rod 41 can be axially displaced relative to the fixed disc 31. The length of the transmission rod 41 is greater than the maximum distance between the fixed disc 31 and the needle disc 20, so that the rear end of the transmission rod 41 always passes through the through hole of the fixed disc 31 and is located on the side of the fixed disc 31 which faces away from the needle disc 20 during the advancing or retreating of the needle disc 20.

[0059] The needle withdrawing drive device comprises a back gear 42 and a drive assembly; the back gear 42 is provided with a threaded hole at the axis, the transmission rod 41 passes through the threaded hole, and the transmission rod 41 is provided with a threaded segment which threadedly cooperates with the threaded hole; the drive assembly is connected with the back gear 42 and is used to drive the back gear 42 to rotate.

[0060] The back gear 42 can be supported by the drive assembly, and under the action of the drive assembly, the back gear 42 is driven to rotate. The threaded hole at the axis of the back gear 42 threadedly cooperates with the threaded segment on the transmission rod 41 during the rotation of the back gear 42. During the rotation of the back gear 42, the back gear 42 does not axially displace, so that the transmission rod 41 axially displaces, i.e. the transmission rod 41 moves horizontally leftward or rightward as shown in the figure. Figure 1 In this embodiment, since the transmission rod 41 belongs to the needle withdrawing device 40, its main purpose is to drive the steel needle 21 to retreat, so the transmission rod 41 moves rightward under the driving action of the back gear 42 as shown in the figure, and drives the needle disc 20 to move rightward while the first spring 32 is compressed. Figure 2 The needle withdrawing drive device comprises a back gear 42 and a drive assembly; the back gear 42 is provided with a threaded hole at the axis, the transmission rod 41 passes through the threaded hole, and the transmission rod 41 is provided with a threaded segment which threadedly cooperates with the threaded hole; the drive assembly is connected with the back gear 42 and is used to drive the back gear 42 to rotate.

[0061] The needle withdrawing drive device comprises a back gear 42 and a drive assembly; the back gear 42 is provided with a threaded hole at the axis, the transmission rod 41 passes through the threaded hole, and the transmission rod 41 is provided with a threaded segment which threadedly cooperates with the threaded hole; the drive assembly is connected with the back gear 42 and is used to drive the back gear 42 to rotate.

[0062] The first kind, when the first spring 32 is completed compression, the needle shooting trigger 60 limits the axial displacement of the transmission rod 41, drives the retreat gear 42 to move along its axial direction away from the needle disc 20, in this process, the transmission rod 41 rotates but does not have axial displacement, until the retreat gear 42 leaves the threaded section on the transmission rod 41, moves to the smooth section of the transmission rod 41, which is located at the end of the threaded section away from the needle disc 20, the outer diameter of the smooth section is smaller than the hole diameter of the threaded hole of the retreat gear 42, the threaded hole of the retreat gear 42 no longer cooperates with the threaded section of the transmission rod 41, the transmission rod 41 loses the constraint of the threaded hole of the retreat gear 42, when the needle shooting trigger 60 releases the axial limit of the transmission rod 41, the first spring 32 resets, drives the needle disc 20 to quickly advance, so that the steel needle 21 pierces the pouring formwork, in the process of advancing of the needle disc 20, the transmission rod 41 synchronously advances.

[0063] The second kind, the retreat gear 42 includes the first semicircular gear 421 and the second semicircular gear 422 which are symmetrically clamped on both sides of the transmission rod 41, the radial end faces of the first semicircular gear 421 and the second semicircular gear 422 are spliced to form a complete circular retreat gear 42; that is, the complete circular retreat gear 42 is cut into two semicircles, which are the first semicircular gear 421 and the second semicircular gear 422 respectively, the radial end faces of the first semicircular gear 421 and the second semicircular gear 422 are the cutting seam or splicing seam of the cutting retreat gear 42. Since the retreat gear 42 is cut or split into two semicircles, the threaded hole of the shaft center of the retreat gear 42 is also cut into two semicircular holes, which are spliced and surrounded to form a complete threaded hole at the cutting surface.

[0064] The retreat gear 42 also includes the second spring 423 which connects the first semicircular gear 421 and the second semicircular gear 422 at both ends, the second spring 423 tightens the first semicircular gear 421 and the second semicircular gear 422, so that the radial end faces thereof are tightly attached, the second spring 423 is a tension spring, under the action of the second spring 423, the radial end faces of the first semicircular gear 421 and the second semicircular gear 422 are tightly attached, the retreat gear 42 and the threaded hole are complete structures; the needle shooting trigger 60 drives the first semicircular gear 421 and the second semicircular gear 422 to move away to separate the retreat gear 42 and the transmission rod 41. When the first semicircular gear 421 and the second semicircular gear 422 move away, the threaded hole no longer cooperates with the threaded section of the transmission rod 41, the first semicircular gear 421 and the second semicircular gear 422 no longer clamp the transmission rod 41, the transmission rod 41 loses the constraint of the threaded hole of the retreat gear 42, the first spring 32 resets, drives the needle disc 20 to quickly advance, so that the steel needle 21 pierces the pouring formwork, in the process of advancing of the needle disc 20, the transmission rod 41 synchronously advances.

[0065] The needle shooting device 60 can be arranged on the radially opposite sides of the first and second half circular gears 421 and 422, for example, the needle shooting device 60 includes electric pull rods connected with the first and second half circular gears 421 and 422 respectively. The first and second half circular gears 421 and 422 are separated by applying pulling forces on the radially opposite sides of the first and second half circular gears 421 and 422 respectively.

[0066] In the embodiment, as shown in FIG. 5, the edges where the radial end faces of the first and second half circular gears 421 and 422 intersect with the axial end faces are provided with grooves 424. The grooves 424 can also be arranged only on the edges where the radial end faces of the first or second half circular gears 421 or 422 intersect with the axial end faces. The grooves 424 include a first beveled opening arranged at the edge where the radial end face of the first half circular gear 421 intersects with the axial end face, and a second beveled opening arranged at the edge where the radial end face of the second half circular gear 422 intersects with the axial end face, and the slope faces of the first and second beveled openings are connected at the joint of the first and second half circular gears 421 and 422. Figure 3 、 4

[0067] The needle shooting device 60 includes a shooting motor 61, a shooting disc 62, a transmission rod 63 and a triangular wedge block 64. The shooting disc 62 is arranged at the side of the back-off gear 42 opposite to the fixed disc 31. The transmission rod 63 is arranged between the shooting disc 62 and the back-off gear 42, one end of the transmission rod 63 is fixed with the shooting disc 62, and the other end of the transmission rod 63 is connected with the triangular wedge block 64. The triangular wedge block 64 is arranged opposite to the groove 424. The shooting motor 61 is arranged at the side of the shooting disc 62 opposite to the back-off gear 42, and drives the shooting disc 62 to move close to or away from the back-off gear 42.

[0068] In the embodiment, two grooves 424 are arranged, and the two grooves 424 are distributed on the same radial direction of the back-off gear 42. Correspondingly, two triangular wedge blocks 64 are arranged, and the two triangular wedge blocks 64 correspond to the two grooves 424 respectively.

[0069] The shooting motor 61 drives the shooting disc 62 to move along the axial direction. When the shooting disc 62 moves close to or approaches the back-off gear 42, the triangular wedge block 64 connected with the shooting disc 62 through the transmission rod 63 moves close to the back-off gear 42 and is inserted into the groove 424. The shooting motor 61 continues to drive the shooting disc 62 to move close to the back-off gear 42, and the triangular wedge block 64 pushes the first and second half circular gears 421 and 422, so that the first and second half circular gears 421 and 422 are separated.

[0070] ​The trigger disc 62 comprises a trigger gear 621 and a sleeve 622; the sleeve 622 is fixedly connected with the device housing 10, the transmission rod 41 passes through the sleeve 622, and the trigger gear 621 movably sleeves on the sleeve 622 and is in opposite rotation with the sleeve 622. The sleeve 622 supports the trigger gear 621 and separates the trigger gear 621 from the transmission rod 41. The drive assembly is not only connected with the reset gear 42 but also connected with the trigger gear 621, and drives the reset gear 42 and the trigger gear 621 to rotate synchronously, so as to ensure that the triangular wedge block 64 is always aligned with the groove 424. At the same time, in the process of synchronous rotation of the trigger gear 621 and the reset gear 42, the transmission rod 41 is axially displaced, and due to the separation effect of the sleeve 622, the displacement of the transmission rod 41 does not affect the rotation of the trigger gear 621.

[0071] In addition, since the trigger motor 61 drives the trigger gear 621 to move axially, in order to avoid the rotation of the trigger gear 621 from colliding with the trigger motor 61 in a fixed state, the axial end surface of the trigger gear 621 opposite to the reset gear 42 is provided with a concentric annular stepped groove 623; the output end of the trigger motor 61 is connected with a trigger rod 65, one end of the trigger rod 65 is located in the annular stepped groove 623, and the trigger rod 65 is provided with an anti-disengagement part 651. The anti-disengagement part 651 can be a radial protruding structure arranged at the end of the trigger rod 65, which can be a rod or a ring. The annular stepped groove 623 comprises a first annular groove and a second annular groove which are concentric and have different diameters and are connected with each other, the first annular groove is arranged on the axial end surface of the trigger gear 621, and the second annular groove is arranged on the annular side wall of the first annular groove; the trigger rod 65 passes through the first annular groove and extends into the second annular groove, and the anti-disengagement part 651 is located in the second annular groove and can move in the second annular groove.

[0072] The needle shooting trigger device 60 further comprises a third spring 66 connected with the trigger gear 621, the first semicircular gear 421 and the second semicircular gear 422. The third spring 66 has at least two, one end of one of the third springs 66 is connected with the first semicircular gear 421, and the other end of the third spring 66 is connected with the trigger gear 621; one end of the other third spring 66 is connected with the second semicircular gear 422, and the other end of the third spring 66 is connected with the trigger gear 621.

[0073] The triangular wedge 64 of the force transmission rod 63 first pushes the first semicircular gear 421 and the second semicircular gear 422 to separate the first semicircular gear 421 and the second semicircular gear 422 from the driving assembly, and then continues to push the first semicircular gear 421 and the second semicircular gear 422 to separate the first semicircular gear 421 and the second semicircular gear 422, thereby completing the needle shooting action (i.e., the steel needle 21 pierces the pouring formwork). When the needle retraction device 40 needs to drive the steel needle 21 to retreat, the driving assembly needs to cooperate with the retraction gear 42 again to drive the retraction gear 42 to rotate and move the transmission rod 41 in the axial direction. Therefore, when the excitation motor 61 pulls the excitation rod 65 to move backward, the first semicircular gear 421 and the second semicircular gear 422 are combined to form a complete retraction gear 42 under the action of the second gear, and the first semicircular gear 421 and the second semicircular gear 422 are moved backward synchronously under the action of the third spring 66, and cooperate with the driving assembly.

[0074] As shown in FIG. 1, the device housing 10 is provided with a needle shooting device 30, a needle retraction device 40, a vibrating device 50, and a vibrating device 60. The needle shooting device 30 is arranged on the left side of the device housing 10, and the needle retraction device 40 is arranged on the right side of the device housing 10. The vibrating device 50 is arranged on the top of the device housing 10, and the vibrating device 60 is arranged on the bottom of the device housing 10. ​ As shown in FIG. 1, the device housing 10 is provided with a needle shooting device 30, a needle retraction device 40, a vibrating device 50, and a vibrating device 60. The needle shooting device 30 is arranged on the left side of the device housing 10, and the needle retraction device 40 is arranged on the right side of the device housing 10. The vibrating device 50 is arranged on the top of the device housing 10, and the vibrating device 60 is arranged on the bottom of the device housing 10. The driving assembly is arranged in the device housing 10, and the driving assembly comprises a driving motor 43, a driving shaft 44, a driving gear 45, a driven gear 46, a connecting shaft 47, a first transmission gear 48, and a second transmission gear 49. The output shaft of the driving motor 43 is connected to the driving shaft 44 to drive the driving shaft 44 to rotate. The driving shaft 44 is fixedly connected with the driving gear 45, and the driving shaft 44 drives the driving gear 45 to rotate. The driving gear 45 is engaged with the driven gear 46, and the driving gear 45 drives the driven gear 46 to rotate. The connecting shaft 47 is fixed to the axis of the driven gear 46, and the driven gear 46 drives the connecting shaft 47 to rotate. The first transmission gear 48 and the second transmission gear 49 are fixedly arranged on the connecting shaft 47 along the length direction of the connecting shaft 47, and the connecting shaft 47 drives the first transmission gear 48 and the second transmission gear 49 to rotate. The first transmission gear 48 is engaged with the retraction gear 42, and the second transmission gear 49 is engaged with the excitation gear 621.

[0075] The outer surface of the device housing 10 is further provided with three switches, namely a vibrating switch 12, a needle retraction switch 13, and a needle shooting switch 14. The vibrating switch 12 is electrically connected with the vibrating motor 50, and the vibrating switch 12 is used to start or stop the vibrating motor 50. The needle retraction switch 13 is electrically connected with the driving motor 43 of the driving assembly of the needle retraction device 40, and the needle retraction switch 13 is used to start or stop the driving motor 43. The needle shooting switch 14 is electrically connected with the excitation motor 61 of the needle shooting device 30, and the excitation motor 61 drives the excitation disc 62 to approach or move away from the retraction gear 42 based on the instruction signal of the needle shooting switch 14.

[0076] The end of the corresponding force transmission rod 63 of the device housing 10, which is opposite to the dial 20, is also provided with a back-off channel 11. The end of the force transmission rod 63, which is opposite to the dial 20, extends into the back-off channel 11 after passing through the back-off gear 42 and the trigger gear 621, and the end of the force transmission rod 63 in the back-off channel 11 is provided with a limiting piece. In addition, the end of the back-off channel 11, which is away from the force transmission rod 63, is provided with a pressure sensor 15. The pressure sensor 15 is located in the axial direction of the force transmission rod 63, and the pressure sensor 15 is also electrically connected to a prompt light located on the outer surface of the device housing 10. When the force transmission rod 63 is backed off to abut against the pressure sensor 15, the pressure sensor 15 activates the prompt light based on the received pressure signal, and the prompt light is on. This reminds the operator that the first spring 32 has been fully compressed.

[0077] The device housing 10 can also be provided with a controller, a processor and other electronic devices, which are electrically connected to the above-mentioned switch, the vibrating motor 50, the driving motor 43 and the trigger motor 61.

[0078] Based on the same inventive concept, the present application also provides a concrete vibrating method, which comprises the following steps:

[0079] The dial 20 provided with one or more steel needles 21 is placed outside the pouring formwork. Before placing the dial 20, the position of the embedded member of the building structure to be poured is determined, and then the area needing to be vibrated and exhausted is determined based on the position of the embedded member, the area being located below the embedded member. Then, the target position of the pouring formwork for placing the dial 20 is determined based on the area, and the dial 20 is placed at the target position of the pouring formwork. The steel needle 21 is located between the dial 20 and the pouring formwork.

[0080] The needle shooting device 30 connected to the dial 20 is used to drive the steel needle 21 to advance to pierce the pouring formwork, so as to form an exhaust hole on the pouring formwork.

[0081] The needle retracting device 40 connected to the dial 20 is used to drive the steel needle 21 to retreat so as to connect the exhaust hole with the pouring cavity, wherein the pouring cavity is the space inside the pouring formwork where the concrete is poured.

[0082] The vibrating motor 50 connected to the dial 20 is used to drive the steel needle 21 on the dial 20 to vibrate, so as to realize the vibration of the concrete in the pouring cavity and make the gas in the concrete in the pouring cavity exhaust from the exhaust hole.

[0083] The above-mentioned concrete vibrating method can be realized by using the concrete vibrating device provided by the present application. Alternatively, the method can be realized by using other mechanical devices. For example, the needle shooting device 30 is an existing nail gun, and the needle retracting device 40 is an existing nail gun.

[0084] In the concrete vibrating method, the needle withdrawing device 40 can withdraw the steel needle 21 from the vent hole incompletely. Of course, the prerequisite is that the steel needle 21 is conical, and the steel needle 21 has a gap between the hole wall of the vent hole after the steel needle 21 retreats a certain distance, which can be used to discharge the gas in the pouring cavity.

[0085] In order to improve the vibrating effect, the concrete vibrating method further comprises the following steps before the vibrating motor 50 drives the steel needle 21 on the needle disc 20 to vibrate:

[0086] The needle withdrawing device 40 drives the steel needle 21 to retreat to the outside of the pouring formwork, that is, the needle withdrawing device 40 withdraws the steel needle 21 from the vent hole completely. The steel needle 21 is moved to change the position of the steel needle 21 relative to the pouring formwork, that is, the position of the needle disc 20 on the pouring formwork is changed, so that the steel needle 21 is misaligned with the previously generated vent hole; the needle driving device 30 drives the steel needle 21 to advance again to pierce the pouring formwork, so that the steel needle 21 is inserted into the concrete in the pouring cavity.

[0087] The vibrating motor 50 drives the steel needle 21 on the needle disc 20 to vibrate to realize the vibrating of the concrete in the pouring cavity, so that the gas in the concrete in the pouring cavity is discharged from the vent hole.

[0088] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiment. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and refinements without departing from the principle of the present application shall also be considered as the protection scope of the present application.

Claims

1. A concrete vibrating device, characterized by, The concrete vibrating device comprises a needle disc, a needle shooting device, a needle withdrawing device, and a vibrating motor. The needle disc is provided with one or more steel needles and is arranged outside a pouring formwork. The needle shooting device is connected with the needle disc and is used to drive the steel needles to advance to pierce the pouring formwork and form exhaust holes on the pouring formwork. The needle withdrawing device is connected with the needle disc and is used to drive the steel needles to retreat so that the exhaust holes are communicated with the pouring cavity. The vibrating motor is connected with the needle disc and is used to drive the steel needles on the needle disc to vibrate to realize the vibration of the concrete in the pouring cavity. The concrete vibrating device further comprises a device housing.

2. The concrete vibrating apparatus of claim 1, wherein The needle shooting device comprises a fixed disc and a first spring.

3. The concrete vibrating apparatus of claim 2, wherein The fixed disc is arranged at the side of the needle disc opposite to the steel needles and is fixedly connected with the device housing.

4. The concrete vibrating apparatus of claim 3, wherein The first spring is arranged between the fixed disc and the needle disc and the two ends of the first spring are respectively connected with the fixed disc and the needle disc. The first spring is reset to drive the steel needles to advance to pierce the pouring formwork. The needle withdrawing device comprises a transmission rod and a needle withdrawing driving device. One end of the transmission rod is connected with the needle disc and the other end of the transmission rod passes through the fixed disc and is connected with the needle withdrawing driving device. The needle withdrawing driving device drives the transmission rod to move to pull the needle disc to the fixed disc and simultaneously compress the first spring. The needle withdrawing driving device comprises a back gear and a driving assembly. The transmission rod passes through a threaded hole of the back gear and the transmission rod is provided with a threaded segment threadedly matched with the threaded hole. The driving assembly is connected with the back gear to drive the back gear to rotate. The concrete vibrating device further comprises a needle shooting triggering device. The needle shooting triggering device is used to drive the back gear to separate from the transmission rod to release the matching of the threaded hole and the threaded segment. The back gear comprises a first half circular gear and a second half circular gear which are symmetrically clamped at the two sides of the transmission rod. The radial end faces of the first half circular gear and the second half circular gear are jointed to form a complete circular back gear. The back gear further comprises a second spring connected with the first half circular gear and the second half circular gear. The second spring pulls the first half circular gear and the second half circular gear to make the radial end faces thereof closely abut. The needle shooting triggering device drives the first half circular gear and the second half circular gear to separate to separate the back gear from the transmission rod. The edges where the radial end faces and the axial end faces of the first half circular gear and / or the second half circular gear meet are provided with grooves. The needle shooting triggering device comprises a triggering motor, a triggering disc, a transmission rod, and a triangular wedge. The triggering disc is arranged at the side of the back gear opposite to the fixed disc. The transmission rod is arranged between the triggering disc and the back gear and one end of the transmission rod is fixedly connected with the triggering disc and the other end of the transmission rod is connected with the triangular wedge. The triangular wedge is arranged opposite to the grooves. The triggering motor is arranged at the side of the triggering disc opposite to the back gear to drive the triggering disc to close to or separate from the back gear.

5. The concrete vibrating apparatus of claim 4, wherein The exciting disc comprises an exciting gear and a sleeve; the sleeve is fixedly connected with the device shell, the transmission rod passes through the sleeve, and the exciting gear movably fits on the sleeve in opposite rotation; the axial end surface of the exciting gear opposite to the back-off gear is provided with a concentric annular stepped groove; the output end of the exciting motor is connected with an exciting rod, one end of the exciting rod is located in the annular stepped groove, and the exciting rod is provided with an anti-disengagement part; the drive assembly is further connected with the exciting gear to drive the back-off gear and the exciting gear to synchronously rotate; the needle shooting exciting device further comprises a third spring connected with the exciting gear, the first semicircular gear and the second semicircular gear.

6. The concrete vibrating apparatus of claim 1, wherein The concrete vibrating device further comprises a suction cup; the suction cup surrounds the outside of the needle disc, and the suction cup is connected with the vibrating motor.

7. A method of vibrating concrete, characterized by, The method comprises the following steps: A needle disc provided with one or more steel needles is placed outside a pouring formwork; A needle shooting device connected with the needle disc is used to drive the steel needles to advance to pierce the pouring formwork, so that exhaust holes are formed on the pouring formwork; A needle back-off device connected with the needle disc is used to drive the steel needles to retreat, so that the exhaust holes are communicated with a pouring cavity, wherein the pouring cavity is a space on the inside of the pouring formwork where concrete is poured; A vibrating motor connected with the needle disc is used to drive the steel needles on the needle disc to vibrate, so as to vibrate the concrete in the pouring cavity and make the gas in the concrete discharged from the exhaust holes; before the vibrating motor drives the steel needles on the needle disc to vibrate, the following step is further included: The needle back-off device drives the steel needles to retreat to the outside of the pouring formwork, the steel needles are moved to change the position of the steel needles relative to the pouring formwork, so that the steel needles are misaligned with the exhaust holes; the needle shooting device is used again to drive the steel needles to advance to pierce the pouring formwork.

Images